Cucurbits

Cucurbits

Growing Cucurbits

Cucumber

Slicing

Dasher II, Turbo, Marketmore 76, Daytona, Stonewall.

Pickling

Pioneer, Calypso, Jackson Supreme, Sassy.

Muskmelon

Athena, Aphrodite, Fastbreak.

Pumpkin

Halloween (Orange)

Howden, Spirit, Howden Biggie, Magic Lantern, Sorceror, Magician, Gladiator.

White

Lumina, Cotton Candy, Spartan.

Red

Rouge Vif d’Etampes (trial).

Miniature

Jack-Be-Little*, Sweetie Pie, Baby Boo (white), Wee-B-Little, Lil’Pumpkemon (striped), Apprentice, Mystic Plus.

*Not edible.

Hard Shell

Cannonball, Ironman, Lil’Ironsides.

Squash

Summer

Zucchini

Medium Green

Ambassador, Zucchini Elite.

Dark Green

Raven, Noche, Blackjack.

Yellow

Goldrush, Golden Dawn III, Golden Delight.

Winter

Butternut, Buttercup, Hubbards (Blue, Golden and Green), Table Ace (Acorn), Taybelle (Acorn), Royal Ace (Acorn), Spaghetti squash.

Miniature (Baby) Squash

(Harvested immature)

Sunny Delight, Peter Pan, Sunburst.

Watermelon

Sugar Baby, Yellow Baby, Sweet Favourite.

See your seed dealer for the most recent variety recommendations.

Buy seed treated with Thiram or captan seed protectants.

For control of Pythium damping off, use seed treated with Apron XL LS.  Use seed treated with Apron MAXX RTA to control damping off caused by Pythium spp., Fusarium spp. and Rhizoctonia spp.   

The minimum soil temperature required for germination of these crops is 16°C with the optimum range between 21 and 35°C.

Slicing-cucumbers and zucchini are often started in plug trays in greenhouses 3 to 4 weeks before transplanting outdoors. Approximately 2.25 kg of seed will provide enough transplants to plant 1 ha (0.9 kg/acre). Do not transplant until all danger of frost has passed unless row covers are used.

For direct-seeding of cucumbers, 4.5 to 5.5 kg/ha (1.8 to 2.2 kg/acre) of seed are required if seeding is to be done in the field without the use of a precision seeder.

Pickling cucumber varieties are usually direct-seeded, but transplants may be used where earliness is important. Seed at a depth of 1.5 to 2.5 cm depending on soil moisture, and use 2.25 to 2.75 kg/ha (0.9 to 1.1 kg/acre) of seed.

Muskmelons and watermelons are usually started in greenhouses 5 weeks prior to the date for transplanting.

Pumpkins and squash are usually direct-seeded when all danger of frost has passed.

Growing cucurbits using plasticulture provides many benefits. See the "Plasticulture" section of the Vegetable Production Guide: Planting (PDF).

Spacing Guidelines for Planting Cucurbits

Final Spacing Between Rows Within Row
Slicing cucumbers 1.2 to 1.8 m 30cm
Pickling cucumbers 1.2 to 1.5 m 20cm
Muskmelons 1.5 to 1.8 m 90cm
Watermelons 1.8 to 2.4 m 120cm
Pumpkins 1.8 to 2.4 m 90cm
Squash 1.8 to 2.4 m 90cm

A soil test is necessary to determine lime, phosphate and potash requirements. Use the Vegetable Production Guide: Nutrient Management (PDF) for recommendations based on soil test results.

The optimum pH range is 5.8–7.0.

Prior to planting, broadcast and disc in 70 kg/ha (28 kg/acre) nitrogen and all of the required potash and phosphate. Alternatively, all of the phosphate and up to 100 kg/ha (40 kg/acre) in total of nitrogen plus potash may be banded at planting with the balance broadcast before planting.

Just before vines begin to spread, side-dress with 40 kg/ ha (16 kg/acre) of nitrogen or if mulching and trickle irrigation are used, nutrients should be delivered by fertigation. See the "Fertigation” section of the Vegetable Production Guide: Planting (PDF).

Vine crops bear both male and female flowers. Only the female flowers set fruit. Bees transfer pollen from male flowers to female flowers, making fruit set possible. In small plantings there are often enough native bees to ensure adequate pollination. In larger plantings, it is often necessary to introduce one honey bee colony per hectare at bloom.

For more information, review the Bee Poisoning warning in the Vegetable Production Guide: Pest Management (PDF, 1.2 MB).

 

Cucurbit Weed Management

A black plastic or wavelength selective mulch provides excellent weed control and other benefits. See the “Plastic Mulches” section of the Vegetable Production Guide: Planting (PDF).

Broadleaf weed control with herbicides is very difficult in vine crops. Growers should consider using the stale seedbed technique in the Vegetable Production Guide: Planting (PDF) to provide control of the first flush of weeds. The herbicides listed in the tables below are also registered, but have a very limited broadleaf weed spectrum. 

As these crops are usually planted in wide rows, herbicides can be applied in a narrow band over the row (e.g. 30 cm) to reduce chemical cost. Cultivation can be used to control weeds between the rows.

Pre-plant Incorporation: Herbicide Application Rates

Product Rate PHI* Comments

Sandea

(halosulfuron)

Group 2
cucumbers, cantaloupes, honeydews, Crenshaw melons:

35 to 70 g/ha (14.2 to 28.3 g/acre)

watermelon, pumpkins & winter squash:
35 to 52.5 g/ha (14.2 to 21.2 g/acre)
30:  cucumbers, pumpkins & winter squash
 
57:  watermelon, cantaloupes, honeydews & Crenshaw melons
Pre-seeding or Pre-transplant:
  • See Pre-emergence and Post-emergence control tables on this page for additional uses.
  • Do not use pre-plant for direct-seeded pumpkins and winter squash.
  • Water volume rates vary.  Check label.
  • Apply as a pre-plant (except for pumpkins and winter squash) or pre-tranplant application to bare ground or under plastic mulch.
  • If using plastic mulch, apply following final bed shaping and just prior to installation of the plastic mulch.
  • Seed or transplant crop into the treated area no sooner than 7 days after application and the installation of plastic mulch (if using plastic mulch).
  • Use lower rate on lighter textured soils with low organic matter.
  • For watermelon, pumpkin and winter squash, do not apply more than 70 g/ha (28 g/acre) of product per season.
  • For cucumbers, cantaloupes, honeydews and Crenshaw melons do not apply more than 140 g/ha (57 g/acre) of product per season.
  • Sandea-treated soil in the transplant hole may result in crop injury.  Care should be taken to limit movement of soil during transplanting.
  • Can be applied as a broadcast or band application.
  • For band applications, use proportionally less spray mixture based on the area actually sprayed so that a full rate is not concentrated into the band.
  • Controls labelled broadleaf weeds including ladysthumb, wild mustard and redroot pigweed.
  • Suppresses nutsedge.
  • Will not control ALS-inhibitor resistant weeds.
  • Applications should be made to actively growing weeds at the heights defined in the "USE RATE GUIDE" section of the label.
  • Observe plantback interval of 15 months for cabbage and carrots, 18 months for broccoli and cauliflower, 24 months for spinach and 36 months for beets.  See label for other crops listed.
  • Do not enter treated area for 12 hours.

Prefar 4.8-E

(bensulide)

Group 8
12 to 14 L/ha
(4.9 to 5.7 L/acre)

Apply in 100 to 500 L/ha (40 to 200 L/acre) of water
N/A
  • Registered on cucumbers.
  • Controls barnyard grass, crabgrass, and foxtail.
  • Does not control emerged weeds.
  • Do not make more than 1 application per year.
  • Rotate only to cucurbits, peppers, cole crops, carrots, lettuce, or tomatoes.
  • Use on mineral soils only.
  • Apply as broadcast spray to well worked soil that is dry enough to permit thorough incorporation.
  • Incorporate to depth of 2.5 to 5 cm before planting.

*PHI = Pre-harvest interval
BUFFERS – Refer to product label for buffer requirements, and consult the Vegetable Production Guide: Pesticide Regulations and Safety (PDF).
PESTICIDE GROUP DETAILS – see the Vegetable Production Guide: Pesticide Toxicity Table (PDF).

Pre-emergence: Herbicide Application Rates

Product Rate PHI* Comments

Sandea

(halosulfuron)

Group 2
cucumbers, cantaloupes, honeydews & Crenshaw melons:
35 to 70 g/ha (14.2 to 28.3 g/acre)
 
 
watermelon, pumpkins & winter squash:
35 to 52.5 g/ha (14.2 to 21.2 g/acre)
30:  summer squash for processing, cucumbers, pumpkins & winter squash
 
57:  watermelon, cantaloupes, honeydews & Crenshaw melons
  • Water volume rates vary.  Check label.
  • See PPI and Post-emergence control tables on this page for additional uses.
  • If weeds are present, use with a nonionic adjuvant or crop oil concentrate.
  • Apply after seeding, but prior to soil cracking.
  • For watermelon, where soil is fumigated prior to planting, allow at least 5 days after soil fumigation before applying.
  • Incorporate with 0.5 to 1.25 cm irrigation to improve weed control.
  • For processing pumpkins and processing winter squash, use the cucumber rate.
  • Use lower rate on lighter textured soils with low organic matter.
  • For pumpkins and winter squash, apply 3 to 5 cm of sprinkler irrigation to settle the soil after planting and prior to application.
  • For summer squash for processing, use the rate of 47 to 70 g/ha (19 to 28.3 g/acre).
  • For summer squash for processing do not apply more than 140 g/ha (57 g/acre) of product per season.
  • See PPI control table on this page for total maximum product allowed for application per season on other crops listed.
  • Can be applied as a broadcast or band application.
  • For band applications, use proportionally less spray mixture based on the area actually sprayed so that a full rate is not concentrated into the band.
  • See PPI control table on this page for weeds controlled and suppressed, plantback interval precautions and re-entry interval.
  • Applications should be made to actively growing weeds at the heights defined in the "Use Rate Guide" section of the label.
  • May cause temporary stunting in summer squash for processing, pumpkins and winter squash.

Reflex

(fomesafen)

Group 14
1.0 L/ha
(0.40 mL/acre)

Apply in 200 L/ha (80 L/acre) of water
42
  • Registered on cucumbers only.
  • Controls labelled broadleaf weeds including redroot pigweed, wild mustard, lady's-thumb and Eastern black nightshade.
  • Suppresses lamb's-quarters.
  • If target weeds have emerged, apply with a non-ionic adjuvant (Agral 90 or Citowett at 0.1% v/v of spray solution).
  • Do not apply to any field more often than once every two years.
  • Make a banded application to row middles just after seeding but prior to crop emergence; or just prior to transplanting.
  • Adjust the rate according to band and row width.
  • Do not apply directly to plants.
  • Crop injury may result if application is made too close to the plants.
  • Some varieties are more tolerant to Reflex than others.  Test a small area before applying to the entire crop.
  • Reflex can remain active in the soil for several months after application and the residues present a potential carry-over damage to certain crops.  See label for details.
  • Do not re-enter treated area for 12 hours.

Devrinol 50 DF

(napropamide)

Group 15

2.24 to 4.5 kg/ha
(0.9 to 1.8 kg/acre)

Apply in 200 to 900 L/ha (80 to 365 L/acre) of water

N/A
  • Registered on direct-seeded pumpkins and squash.
  • Apply only once per season.
  • Use the lower rate on light soils.
  • Do not use on soils with more than 10% organic matter.
  • Some rainfall or irrigation after application is necessary for adequate weed control.
  • Observe a 12 month plant back interval for crops not on the label.
  • Do not enter treated area for 12 hours.

Devrinol 2-XT

(napropamide)

Group 15

4.67 to 9.38 L/ha
(01.90 to 3.80 L/acre)

Apply in 200 to 900 L/ha (80 to 365 L/acre) of water

N/A
  • Registered on direct-seeded pumpkins and squash.
  • Apply only once per season.
  • Use the lower rate on light soils.
  • Do not use on soils with more than 10% organic matter.
  • Some rainfall or irrigation after application is necessary for adequate weed control.
  • Observe a 12 month plant back interval for crops not on the label.
  • Do not enter treated area for 12 hours.

*PHI = Pre-harvest interval
BUFFERS – Refer to product label for buffer requirements, and consult the Vegetable Production Guide: Pesticide Regulations and Safety (PDF).
PESTICIDE GROUP DETAILS – see the Vegetable Production Guide: Pesticide Toxicity Table (PDF).

Pre-emerge or early post-emergence: Herbicide Application Rates

Product Rate PHI* Comments

Dual II Magnum

(s-metalochlor)

Group 15

Banded to row middles (after plastic mulch has been laid):  1.15 – 1.56 L/ha
(465 mL-  630 mL/acre)

Broadcast:   1.15 L/ha (465 mL/ha)

Apply in 150 L/ha (60 L/acre) of water.

30
  • Apply pre-emerge to labeled weeds.
  • Transplants: apply prior to or within 48 hours after transplanting.
  • Direct seeded:  apply pre-emerge or to the 1- to 2- leaf stage of crop development.
  • Make only one application per year.
  • Controls nightshade and annual grasses.
  • Suppresses redroot pigweed.
  • To avoid crop injury, minimize foliar contact with Dual II Magnum.
  • Rain is required within 10 days of pre-emerge application, or a shallow cultivation.
  • Do not apply to soils with less than 1% or more than 10% organic matter.
  • Do not enter treated areas for 12 hours.

*PHI = Pre-harvest interval
BUFFERS – Refer to product label for buffer requirements, and consult the Vegetable Production Guide: Pesticide Regulations and Safety (PDF).
PESTICIDE GROUP DETAILS – see the Vegetable Production Guide: Pesticide Toxicity Table (PDF).

Post-emergence: Herbicide Application Rates

Product Rate PHI* Comments

Venture L

(fluazifop-P-butyl)

Group 1
0.8 to 2.0 L/ha
(320 to 800 mL/acre)

Apply in 50 to 200 L/ha (20 to 80L/acre) of water at 200 to 300 kPa
30
  • Registered on cucumbers.
  • Annual bluegrass and broadleaved weeds are not controlled.
  • Do not make more than 1 application per season.
  • Apply in 50 to 200 L/ha (20 to 80 L/acre) water at 200 to 300 kPa.
  • Apply using 425 kPa pressure for dense weed infestations or dense crop canopies.
  • Warning: Women capable of bearing children should avoid exposure to Venture.
  • Do not handle more than 50 kg a.i. (400 L product) per day.
  • Use a closed cab when applying more than 33 kg a.i. (264 L product) per day.
  • Observe a plantback interval of 12 months for crops not listed.
  • Do not re-enter treated area for 12 hours.

Assure II

(quizalofop-P-ethyl)

Group 1
380 mL to 750 mL/ha
(150 to 300 mL/acre)

Apply in 100 L/ha (40 L/acre) of water.
30
  • Registered on cantaloupe.
  • Apply with Merge at 5 to 10 litres per 1000 litres of spray solution, or Sure-Mix at 0.5% (0.5 L per 100 L of spray solution).
  • Apply at the 2 to 6 crop leaf stage.
  • Apply at the 2 to 5 leaf stage of annual grasses and up to the 3 leaf stage of quackgrass.
  • Maximum of 1 application per year.
  • Rainfall within 1 hour of application may reduce effectiveness.
  • After applying a broadleaf herbicide not listed on the label as a tankmix, wait at least 7 days before making an application of Assure.
  • Do not enter treated area for 4 days.

Poast Ultra

(sethoxydim)

Group 1

Annual grasses (incl. volunteer cereals):

320 mL/ha (130 mL/ac)

Annual grasses & quackgrass suppression:

470 mL/ha (190 mL/ac)

Quackgrass:

1.1 L/ha (445 mL/ac)
30
  • Do not use on melons.
  • For control of annual grasses and quackgrass suppression, add Merge adjuvant using a rate of 0.5 - 1.0 L/ha (0.2 - 0.4 L/ac).
  • For control of quackgrass, add Merge adjuvant using a rate of 1.0 - 2.0 l/ha (0.4 - 0.8 L/ac).
  • Apply in 50 to 100 L/ha (20 to 40 L/acre) of water at 240 kPa pressure.
  • See label for water volume and pressure when weed infestations or crop canopies are dense.
  • Does not control annual bluegrass.
  • Apply when annual weeds are in the 1 to 6 leaf stage and when quackgrass is in the 1 to 3 leaf stage.
  • Observe a 30 day plantback interval for crops not listed.
  • Do not enter treated area for 12 hours.

Sandea

(halosulfuron)

Group 2
cucumbers, cantaloupes, honeydews, Crenshaw melons & watermelon:
35 to 70 g/ha (14.2 to 28.3 g/acre)

 

pumpkins & winter squash:  35 to 52.5 g/ha (14.2 to 21.2 g/acre)

30:  summer squash for processing, cucumbers, pumpkins & winter squash
 
57:  watermelon, cantaloupes, honeydews & Crenshaw melons
  • Water volume rates vary.  Check label.
  • See PPI and Pre-emergence control tables on this page for additional uses. 
  • A sequential application may be necessary for some annual and perennial weeds.
  • For all crops listed except summer squash for processing, do not apply more than two times per season.
  • Repeat using a 21 day interval.
  • See PPI control table on this page for total maximum product allowed for application per season.
  • For pumpkins and winter squash, apply 3 to 5 cm of sprinkler irrigation to settle the soil after planting and prior to application.
  • Wait to overhead sprinkler irrigate for 2 to 3 days after application.
  • If a timely soil cultivation is necessary to improve control, wait 7 to 10 days after treatment.
Post transplant:
  • Do not use this post-transplant method for watermelon.
  • Apply to transplants that are established and actively growing and in the 3- to 5-leaf stage or no sooner than 14 days after transplanting, but before first flowers appear.
  • Apply as an over-the-top application, a directed spray or with crop shields to minimize contact of the herbicide with the crop.
  • If plastic mulch is used, additional phytotoxicity may occur when applications are made over plastic due to concentration of product in the transplant hole.
(Direct Seeded and Transplant) Row Middle/Furrow Applications:
  • For summer squash for processing, pumpkins and winter squash, use the cucumber rate.  
  • Row middle/furrow application method may be used for cucurbit crops listed, including watermelon.
  • May be applied between rows of crop.
  • Avoid contact of the herbicide with the planted crop.
  • If plastic is used on the planted row, adjust equipment to keep the application off the plastic.
  • Reduce rate and spray volume in proportion to area actually sprayed.
Other comments:
  • Controls broadleaf weeds including ladysthumb, wild mustard, yellow nutsedge and redroot pigweed.
  • Suppresses horsetail, shepherd's purse and smartweed.
  • Will not control ALS-inhibitor resistant weeds.
  • Applications should be made to actively growing weeds at the heights defined in the "USE RATE GUIDE" section of the label.
  • Treat actively growing nutsedge plants at the 3 to 5 leaf stage.  Heavy infestations may require sequential applications.
  • See comments in PPI control table on this page for plantback interval details and re-entry.

Aim EC

(carfentrazone-ethyl)

Group 14

37 to 117 mL/ha
(15 to 47 mL/acre)

Apply in 100 L/ha (40 L/acre) of water

1
  • Registered on transplanted cucurbit vegetables including:  cucumber, muskmelon, pumpkin, summer & winter squash & watermelon.
  • Controls annual weeds.
  • Must be applied using hooded sprayers to weeds between the rows of the emerged crop.
  • Use an adjuvant such as Agral 90 or Agral-Surf at 0.25% v/v (0.25 L/100 L of spray solution) or Merge at 1% v/v (1 L/100 L of spray solution).
  • Precaution: crop injury will occur when spray drift is allowed to come in contact with green stem tissue, leaves, blooms or fruit of the crop.
  • Apply only once per growing season.
  • Do not apply if used as a pre-plant burn-down in the same season.
  • Use the Vegetable Production Guide: Pest Management (PDF, 1.2 MB) for pre-plant burn-down precautions.

*PHI = Pre-harvest interval
BUFFERS – Refer to product label for buffer requirements, and consult the Vegetable Production Guide: Pesticide Regulations and Safety (PDF).
PESTICIDE GROUP DETAILS – see the Vegetable Production Guide: Pesticide Toxicity Table (PDF).

 

Cucurbit Insect Management

 

Aphids are soft-bodied, sucking insects, yellowish-green to black in colour, clustered on growing tips of plants or under leaves. Severe infestations cause premature death of plants, resulting in lack of sizing of pumpkins and squash. Aphids excrete honeydew, causing growth of sooty mould. They can also transmit viruses.

Control

For chemical controls, see table below.

Chemical Control of Aphids

Product Rate PHI* Comments

Malathion 85E

(malathion)

Group 1B

Cucumbers, pumpkins and squash:  880 mL/ha
(355 mL/acre)
 
Melons:  1100 to 1345 mL/ha
(445 to 545 mL/acre)
 
Apply in 1000 L/ha (405 L/acre) of water
3
  • Do not apply unless plants are dry.
  • Do not make more than 1 application per year.
  • Toxic to fish.
  • Best control is when the temperature is above 20°C.
  • Do not apply after expiry date on the container label.
  • Do not re-enter treated area for 24 hours.
  • Also controls spider mites.  Check label.

Movento 240SC

(spirotetramat)

Group 23

220 to 365 mL/ha
(90 to 150 mL/acre)

Apply in 300 L/ha
(120 L/acre) of water

1
  • Repeat at 7 day intervals.
  • Maximum allowed per crop season: 730 mL/ha (295 mL/acre).
  • Use with one of the following adjuvants: non-ionic (eg. Agral 90 or Ag-Surf) or methylated seed oil (eg. Hasten).
  • Do not enter treated area for 12 hours.
  • Toxic to bees.  Do not apply during crop flowering period or when flowering weeds are present. 

Beleaf

(flonicamid)

Group 9C
120 to 160 g/ha
(50 to 60 g/acre)

Apply in 94 L/ha (38L/acre) of water.
0
  • Repeat at 7day intervals as needed.
  • Do not apply more than 3 times per year.
  • Do not apply more than 480 g/ha (200 g/acre) of product per season.

Versys

(afidopyropen)

Group 9D

100 mL/ha

(40 mL/acre)

Apply in 100 L/ha (40 L/acre) of water
0
  • Apply as a groundspray.
  • Do not apply in greenhouses.
  • Repeat using a 7 day interval.
  • Do not apply more than 4 times per year.
  • Ensure thorough coverage.
  • Do not apply more than 1.25 L/ha (506 mL/acre) per year.
  • During the crop blooming period, apply only in the evening when most bees are not foraging.
  • Observe a plantback interval of 30 days for crops not listed.
  • Do not re-enter for 12 hours.

Exirel

(cyantraniliprole)

Group 28

500 to 1500 mL/ha
(200 to 605 mL/acre)

Apply in 100 L/ha (40 L/acre) of water

1
  • Do not make more than 4 applications per growing season.
  • Repeat at 5 day intervals.
  • Use with an adjuvant such as Hasten NT at a rate of 0.25% v/v or MSO Concentrate with Leci-Tech at a rate of 0.5% v/v.
  • Do not apply more than 4.5 L/ha (1.8 L/acre) per season.
  • Toxic to bees and certain beneficial insects.  Apply early in the morning or late in the evening when bees are not active.
  • Note:  Do not tank-mix or apply in sequence with strobilurin-, copper- or captan-containing fungicides.
  • Observe a plantback interval of 30 days for legume vegetables, cereals, grass, crop group 1A (inlcuding beets, carrots, radish, parsnip, turnip) and crop group 2 (inlcuding beet greens and turnip greens). 
  • Observe a plantback interval of 1 year for crops not on this label.
  • Do not enter treated area for 12 hours.

Admire 240F

(imidacloprid)
Group 4
Transplant soil application:
7.5 mL per 100m of row
 
(see rate conversion chart of label for row spacing calculations)
21
  • Use one of the following methods:
  • Apply specified dosage in 2000 L/ha (800 L/ac) of water as a narrow (5 cm or less) surface band over the seedline during planting.
  • Seedlings or established transplants: apply in 200 L/ha (80 L/ac) of water as a subsurface side-dress on both sides of each row. Product must be incorporated into the root zone.
  • Post-seeding drench or transplant-water drench: use higher water volumes to thoroughly wet the soil
  • Do not apply more than once per season as a soil application.
  • Do not make any subsequent application of a group 4 insecticide.

Sivanto Prime

(flupyradifurone)

Group 4D

Soil Application:

Up to 26,650 plants per ha:   750 mL per 10,000 plants

Up to 20,000 plants per ha: 1000 mL per 10,000 plants

21

  • Apply using chemigation into the root-zone through low-pressure drip, trickle, micro-sprinkler or equivalent equipment.
  • Do not use in greenhouses. 
  • Do not follow a soil application of Sivanto Prime with a foliar application of Sivanto Prime or other Group 4D insecticide.
  • Do not apply more than  2000 mL/ha (810 mL/acre) of product per season.
  • Do not enter treated areas for 12 hours.

Sivanto Prime

(flupyradifurone)

Group 4D

Foliar:

500 to 750 mL/ha (200 to 300 mL/acre)

1
  • Do not use in greenhouses. 
  • Repeat at a 7 day interval.
  • Do make a foliar application of Sivanto Prime following a soil application of Sivanto Prime or other Group 4D insecticide.
  • Do not exceed a total of 2000 mL/ha (810 mL/acre) of product per season.
  • Toxic to bees.  Do not apply to flowering crops or weeds if bees are visiting the treatment area.
  • Do not enter treated areas for 12 hours.

*PHI = Pre-harvest interval
BUFFERS – Refer to product label for buffer requirements, and consult the Vegetable Production Guide: Pesticide Regulations and Safety (PDF).
PESTICIDE GROUP DETAILS – see the Vegetable Production Guide: Pesticide Toxicity Table (PDF).

Fleshy caterpillars of various colours cut off plants at or below ground level in spring.

Control

If damage is expected, or at first sign of damage, treat soil surface with one of the products in the table below.

Chemical Control of Cutworms

Product Rate PHI* Comments

Lorsban 4E / Lorsban NT / Nufos 4E

(chloropyrifos)

Group 1B

1.2 to 2.4 L/ha
(0.5 to 1.0 L/acre)

Apply in 200 to 400 L/ha (80 to 160 L/acre) of water
60
  • Registered on cucumber only.
  • Apply at the seedling (2 to 5 leaf) stage, when damage first appears.
  • Best results are obtained when application is made during the afternoon or early evening.
  • Do not make more than 1 application per season.
  • Do not enter treated area for 24 hours.

Pyrinex 480EC

(chloropyrifos)

Group 1B

1.2 to 2.4 L/ha
(0.5 to 1.0 L/acre)

Apply in 200 to 400 L/ha (80 to 160 L/acre) of water
60
  • Registered on cucumber only.
  • Apply at the seedling (2 to 5 leaf) stage, when damage first appears.
  • Best results are obtained when application is made during the afternoon or early evening.
  • Do not make more than 1 application per season.
  • Do not enter treated area for 24 hours.

Sevin XLR

(carbaryl)

Group 1A
2.5 L/ha (1.0 L/acre)  5
  • Use sufficient water to wet the soil around the base of each plant.
  • Maximum of 2 applications per year.
  • Repeat at a 7 day interval.
  • Sprays should be applied on a warm evening.
  • Do not apply when foliage is wet or when rain or excessive humidity is expected during the next 2 days.
  • Toxic to bees.  Do not apply during crop blooming period. 
  • Do not enter treated area for hand-line irrigation for 7 days.  Do not re-enter for hand-harvesting, scouting, turning, weeding, tying or staking for 3 days.

Minecto Pro

(abamectin/ cyantraniliprole)

Group 6 & 28

385 to 556 mL/ha

(156 to 225 mL/acre)

Apply in 200 L/ha (80 L/acre) of water
7
  • Use with 0.1 to 0.5% v/v non-ionic surfactant in the spray mixture.
  • For early season control, apply when rain is not expected in the next 24 hours.
  • For best results, apply to smaller plants when lower portions of plant can receive adequate coverage.
  • Ensure thorough coverage.
  • Repeat using a 7 day interval.
  • Do not apply more than 3 times per season using the high rate.
  • Do not apply more than 5 times per season using the low rate.
  • Do not apply more than 2.010 L/ha (813 mL/acre) per season.
  • Do not apply for 60 days following an in-furrow or soil application or seed piece treatment with any group 28 insecticide.
  • Check label for plantback intervals.
  • Do not re-enter for 12 hours.

Coragen

(chlorantraniliprole)

Group 28
250 mL/ ha
(100 mL/ ac)

Apply in 100L/ha
(40L/acre) of water
1
  • Apply to smaller plants or when lower portions of the plant can receive adequate coverage.
  • Repeat at 5 day intervals as needed.
  • Do not make more than 4 applications per season.
  • Do not apply more than 1.125 L/ha (455 mL/ac) of per season.
  • Do not enter treated area for 12 hours.

Exirel

(cyantraniliprole)

Group 28
500 to 750 mL/ha
(200 to 305 mL/acre)

 

Apply in 100 L/ha (40 L/acre) of water

1
  • Do not make more than 4 applications per growing season.
  • Repeat at 7 day intervals.
  • Do not apply more than 4.5 L/ha (1.8 L/acre) per season.
  • For early season control, apply to foliage when rain is not expected in the next 24 hours.
  • Ensure adequate coverage to lower portions of plant.
  • Toxic to bees and certain beneficial insects.  Apply early in the morning or late in the evening when bees are not active.
  • See aphid section comments for tank-mix precautions and plantback intervals.
  • Do not enter treated area for 12 hours.

*PHI = Pre-harvest interval
BUFFERS – Refer to product label for buffer requirements, and consult the Vegetable Production Guide: Pesticide Regulations and Safety (PDF).
PESTICIDE GROUP DETAILS – see the Vegetable Production Guide: Pesticide Toxicity Table (PDF).

Spidermites are tiny, 8-legged, spider-like animals. Their feeding causes leaves to become dry and bronzed with yellow and brown spots and covered with a fine webbing. Mites increase in number rapidly during hot, dry weather. There are several native predators, but these may not build up fast enough to keep mite levels in check.

Control

See table below.

Chemical Control of Mites

Product Rate PHI* Comments

Minecto Pro

(abamectin/ cyantraniliprole)

Group 6 & 28

385 to 670 mL/ha

(156 to 271 mL/acre)

Apply in 200 L/ha (80 L/acre) of water
7
  • Use with 0.1 to 0.5% v/v non-ionic surfactant in the spray mixture.
  • Apply when mites are 1st observed.
  • Ensure thorough coverage.
  • Repeat using a 7 day interval.
  • Do not apply more than 3 times per season using the high rate.
  • Do not apply more than 5 times per season using the low rate.
  • Do not apply more than 2.010 L/ha (813 mL/acre) per season.
  • Do not apply for 60 days following an in-furrow or soil application or seed piece treatment with any group 28 insecticide.
  • Check label for plantback intervals.
  • Do not re-enter for 12 hours.

Kanemite 15 SC

(acequinocyl)
 
Group 20B
2.07 L/ha
(0.84 L/acre)
1
  • Registered on summer squash only.
  • Controls two spotted spider mite.
  • Repeat at a 21 day interval.
  • Do not apply more than twice per year.
  • Do not apply more than 4.1 L/ha (1.6 L/acre) per season.
  • Observe a plantback interval of 120 days for leafy vegetables and 30 days for all other crops not listed.
  • Do not enter treated area for 12 hours.

Oberon

(spiromesifen)

Group 23

500 to 600 mL/ha
(200 to 240 mL/acre)

Apply in 100 L/ha (40L/acre) of water

1
  • Repeat at 7 day intervals as needed.
  • Do not make more than 3 applications per season.
  • Do not apply more than 1800 mL/ha (730 mL/acre)  per season.
  • Do not enter treated area for 12 hours.

Acramite 50WS

(bifenazate)

Group 25

851 g/ha (344 g/acre) - rate is equivalent to 15 pouches per 4 ha

Apply in 500 L/ha (200 L/acre) of water

3
  • Controls two spotted spider mite.
  • Do not apply more than once per year.
  • Do not enter treated area for 12 hours.

Purespray Green Spray Oil 13E

(mineral oil)
 
Used in organics
10 L of product in 1000 L of water (1% solution) N/A
  • Suppression only.
  • Use up to 1000 L/ha (400 L/acre) spray volume to ensure thorough coverage.
  • Repeat at 7 to 14 day intervals.
  • Do not make more than 8 summer spray applications per growing season.
  • For first use on a new variety, test spray a small field area to check for plant tolerance prior to adoption as a general field practice.
  • A period of 14 days must elapse before chlorothalonil (Bravo) is applied before or after an application of Purespray Green Spray Oil 13E.
  • Do not apply during periods of drought, when plants exhibit moisture stress. 
  • Do not enter treated area for 12 hours.
  • Purespray Green Spray Oil 13E (PCP# 27666) is OMRI-Canada listed.  Check with your certification body before using on an organic operation.

*PHI = Pre-harvest interval
BUFFERS – Refer to product label for buffer requirements, and consult the Vegetable Production Guide: Pesticide Regulations and Safety (PDF).
PESTICIDE GROUP DETAILS – see the Vegetable Production Guide: Pesticide Toxicity Table (PDF).

OMRI-Canada = Organic Materials Review Institute of Canada

Springtails are small, black, white, or gray, wingless insects. They have a forked appendage attached under the rear end of the abdomen, which is held there by a clasp. When this appendage is released the insect jumps like a flea. Normally, springtails remain in the soil, near the roots or plant crown, as they feed on organic matter. Their feeding on young cucumber plants causes brown spots on the leaves; sometimes the plants are stunted.

 

Small (1 mm), slender insects which feed on leaves causing speckling leaves. Good weed control prevents heavy buildup of thrips. Chemical control is not generally required.

Chemical Control of Cucumber Beetles

Product Rate PHI* Comments

Surround WP

(kaolin)
 
Used in organics
12.5 to 25 kg/ha
(5 to 10 kg/acre)

Apply in 500 L/ha (200 L/acre) of water
0
  • Suppression only.
  • Do not apply more than 5 times per year.
  • Apply at 5 to 7 day intervals with first 2 application 3 days apart starting prior to infestation of adult beetles.
  • During wet weather reapply as soon as foliage is dry to re-establish coverage.
  • May alter harvest parameters and may delay maturity.
  • Surround WP (PCP# 27469) is OMRI-Canada listed.  Check with your certification body before using on an organic operation.

Sevin XLR

(carbaryl)

Group 1A
2.5 L/ha (1.0 L/acre)  5
  • Use sufficient water to wet the soil around the base of each plant.
  • Maximum of 2 applications per year.
  • Repeat at a 7 day interval.
  • Sprays should be applied on a warm evening.
  • Do not apply when foliage is wet or when rain or excessive humidity is expected during the next 2 days.
  • Toxic to bees.  Do not apply during crop blooming period. 
  • Do not enter treated area for hand-line irrigation for 7 days.  Do not re-enter for hand-harvesting, scouting, turning, weeding, tying or staking for 3 days.

Matador 120 EC

(Lambda-cyhalothrin)

Group 3

187 to 233 mL/ha
(76 to 94 mL/acre)

Apply in 100 to 200 L/ha (40 to 80 L/acre) of water

1
  • Repeat at 7 day intervals.
  • Do not make more than 3 applications per growing season.
  • Do not enter treated area for 24 hours.

Clutch 50 WDG

(clothianidin)

Group 4A

140 g/ha
(57 g/acre)
7
  • Suppression only.
  • Repeat at 7 day interval.
  • Do not apply more than twice per season.
  • Toxic to bees. Do not apply to flowering crops if bees are foraging.
  • Do not use in areas treated with clothianidin during the previous season.
  • Observe a one year plantback interval for leafy, root and tuber vegetables (except potato).
  • Do not enter treated areas for 12 hours.

*PHI = Pre-harvest interval
BUFFERS – Refer to product label for buffer requirements, and consult the Vegetable Production Guide: Pesticide Regulations and Safety (PDF).
PESTICIDE GROUP DETAILS – see the Vegetable Production Guide: Pesticide Toxicity Table (PDF).

OMRI-Canada = Organic Materials Review Institute of Canada

 

Cucurbit Disease Management

This disease occurs after cool, wet spells and causes numerous small, round, dead spots on leaves. It is most prevalent during hot, dry days combined with dewy nights. Leaves and stems may be killed but there is no spotting of fruit.

Control

Beginning when the disease is first observed and at 7 to 14 day intervals thereafter, apply one of the products listed in the table below. Bravo 500 sprayed for scab and powdery mildew may also control Alternaria leaf spot.

Chemical Control of Alternaria Leaf Spot

Product Rate PHI* Comments

Manzate DF

(mancozeb)

Group M

2.25–3.25 kg/ha
(0.9 to 1.3 kg/acre)

Apply in 200 to 1000 L/ha (80 to 405 L/acre) of water

14
  • Repeat at 5 to 7 day intervals.
  • Do not apply where runoff is likely to occur.
  • Apply when conditions favour disease development

Penncozeb 75DF

(mancozeb)
 
Group M
1.1 to 3.25 kg/ha
(0.44 to 1.3 kg/acre)
14
  • Start applications when runners begin to form or at first sign of disease.
  • Repeat at weekly intervals.
  • Do not enter treated area for 24 hours.

Penncozeb 75DF Raincoat

(mancozeb)
 
Group M
1.1 to 3.25 kg/ha
(0.44 to 1.3 kg/acre)
14
  • Start applications when runners begin to form or at first sign of disease.
  • Repeat at weekly intervals.
  • Do not enter treated area for 24 hours.

Dithane DG Rainshield NT

(mancozeb)
 
Group M
1.1 to 3.25 kg/ha
(0.445 to 1.3 kg/acre)
14
  • Repeat at weekly intervals.
  • Start applications when runners begin to form or at first sign of disease.
  • Direct spray for thorough coverage of upper and lower leaf surfaces.

Dithane F-45

(mancozeb)
 
Group M
1.8 to 5.5 L/ha
(0.73 to 2.2 L/acre)
14
  • Repeat at weekly intervals.
  • Start applications when runners begin to form or at first sign of disease.
  • Direct spray for thorough coverage of upper and lower leaf surfaces.

Cueva

(copper octanoate)
 
Group M1
Use a 0.5% to 2% solution at 470 to 940 L/ha (190 to 380 L/acre) 1
  • For a 0.5% solution, mix 1 part Cueva to 200 parts water.
  • For a 2% solution, mix 1 part Cueva to 50 parts water.
  • Repeat at 7 to 10 day intervals.
  • Repeat at 5 to 7 day intervals following heavy rain or when disease pressure is high.
  • Do not make more than 15 applications per year.
  • Time applications so that 12 hours of dry weather follow application.
  • Do not re-enter treated area for 4 hours.

Aprovia

(benzovindiflupyr)
Group 3
500 to 750 mL/ha
(200 to 300 mL/acre)
Apply in 150 L/ha (60 L/acre of water)
1
  • Apply as a broadcast foliar.
  • Repeat using a 7 to day interval.
  • Do not apply more than 3 L/ha (1.2 L/acre) per season.
  • Observe a plantback interval of 6 months for crops not listed.
  • Do not re-enter treated area for 12 hours.

Aprovia Top

(benzovindiflupyr/
difenoconazole)
 
Group 3 & 7
761 to 967 mL/ha
(308 to 391 mL/acre
 
Apply in 150 L/ha (60 L/acre) of water.
1
  • Apply as a broadcast foliar spray.
  • Repeat using a 7 day interval.
  • Do not apply more than 3.9 L/ha (1.6 L/acre) per season.
  • Observe a plantback interval of 60 days for sweet corn and 6 months for crops not listed.
  • Do not re-enter treated area for 12 hours.

Lance WDG / Cantus WDG

(boscalid)
 
Group 7
460 g/ha
(186 g/acre)
0
  • Repeat at 7 to 14 day intervals.
  • Do not make more than 4 applications per season.
  • Do not enter treated area for 12 hours.
  • For crops not on the label, observe a plant back interval of 14 days.

Elatus

(benzovindiflupyr/
azoxystrobin)
 
Group 11 & 7
500 g/ha
(202 g/acre)
 
Apply in 150 L/ha (60 L/acre) of water.
1
  • Apply as a broadcast foliar application.
  • Repeat at 7 day intervals.
  • Do not apply more than 1.5 kg/ha (0.6 kg/acre) per season.
  • Observe a plantback interval of 6 months for crops not listed.

Cabrio EG

(pyraclostrobin)

Group 11
560 to 840 g/ha
(220 to 340 g/acre)

Apply in at least 350 L/ha (142 L/acre) of water.
3
  • Do not apply more than 4 times per season.
  • After each application, alternate with a fungicide with a different mode of action.
  • Repeat at 7 day intervals.
  • Do not enter treated area for hand-harvesting for 3 days and for all other activities, do not enter for 12 hours.
  • Do not use treated crop for feed.

Allegro 500 F

(fluazinam)

Group 29
1.75 L/ha
(710 mL/acre)

Apply in 280 to 470 L/ha (115 to 190 L/acre) of water
30
  • Registered on cantaloupe only.
  • Apply as a foliar broadcast spray.
  • Repeat using a 7 day application interval.
  • Do not make more than 6 applications.
  • See label for plantback interval details.
  • Do not enter treated area for 24 hours.

*PHI = Pre-harvest interval
BUFFERS – Refer to product label for buffer requirements, and consult the Vegetable Production Guide: Pesticide Regulations and Safety (PDF).
PESTICIDE GROUP DETAILS – see the Vegetable Production Guide: Pesticide Toxicity Table (PDF).

(Pseudomonas)

This bacterial disease causes angular yellow spots on leaves and fruit which turn tan in colour. Droplets of gummy ooze form on the lower surfaces of leaves under humid conditions.

Control

  • If possible, buy seed grown in a dry area where angular leaf-spot is not common.
  • Follow a three-year crop rotation.
  • If the disease appears after planting, spray with one of the products in the table below.
  • Incorporate the vines immediately after harvest.
  • Seed catalogues list varieties with tolerance to angular leaf-spot.

 Chemical Control of Angular Leaf Spot

Product Rate PHI* Comments

Copper 53W

(tri-basic copper sulphate)

Group M

2.5 to 3.0 kg/ha
(1.0 to 1.2 kg/acre)

Apply in 1000 L/ha (405 L/acre) of water

1
  • Maximum 5 applications per season.
  • Cucumbers: Apply at 7 day interval
  • Other cucurbits: Apply using a 5 day interval.

Copper Oxychloride 50

(copper oxychloride)

Group M
Cucumber:
4.0 kg/ha
(1.6 kg/acre)                              
 
Other cucurbits:
3.0 kg/ha
(1.2 kg /acre)
1
  • Apply in 1000 L/ha (405 L/acre) of water.
  • Repeat at 7 day intervals.
  • Do not enter treated area for 48 hours.

Parasol F

(copper hydroxide)

Group M1
2.3 to 3.12 L/ha
(0.9 to 1.25 L/acre)
1
  • Start applications when plants begin to vine.
  • Repeat at 7 day intervals.
  • Maximum 5 applications per season.

Cueva

(copper octanoate)
 
Group M1
Use a 0.5% to 2% solution at 470 to 940 L/ha (190 to 380 L/acre) 1
  • For a 0.5% solution, mix 1 part Cueva to 200 parts water.
  • For a 2% solution, mix 1 part Cueva to 50 parts water.
  • Repeat at 7 to 10 day intervals.
  • Repeat at 5 to 7 day intervals following heavy rain or when disease pressure is high.
  • Do not make more than 15 applications per year.
  • Time applications so that 12 hours of dry weather follow application.
  • Do not re-enter treated area for 4 hours.

*PHI = Pre-harvest interval
BUFFERS – Refer to product label for buffer requirements, and consult the Vegetable Production Guide: Pesticide Regulations and Safety (PDF).
PESTICIDE GROUP DETAILS – see the Vegetable Production Guide: Pesticide Toxicity Table (PDF).

(Coast)

Gray, sunken, disfiguring spots on fruits exuding sticky droplets. Spots deepen and turn dark green or blackish.

Control

  • Sanitation is the key to control. Destroy all crop refuse at the end of the season.
  • Rotate fields out of cucumbers for at least two years.
  • Seed catalogues list varieties with tolerance to scab.
  • If sprays are necessary use one of the products in the table below.

Chemical Control of Cladosporium Scab

Product Rate PHI* Comments

Bravo 500

(chlorothalonil)
 
Group M
4.8 L/ha
(1.9 L/acre)
1
  • Begin application when plants are in first true leaf stage.
  • Repeat at 7 day intervals
  • Do not enter treated area for 48 hours.

Echo 90DF

(chlorothalonil)
 
Group M

2.7 kg/ha
(1.1 kg/acre)

Apply in 50 to 1600 L/ha (20 to 650 L/acre) of water

1
  • Repeat at 7 to 10 day intervals.
  • Maximum of 8 applications per season.
  • Do not enter treated area for 48 hours.
  • Do not apply within 10 days before or after an oil application.

Echo 720

(chlorothalonil)
 
Group M

3.3 L/ha
(1.3 L/acre)

Apply in 50 to 1600 L/ha (20 to 650 L/acre) of water

1
  • Repeat at 7 to 10 day intervals.
  • Maximum of 8 applications per season.
  • Do not enter treated area for 48 hours.
  • Do not apply within 10 days before or after an oil application.

Dithane DG
Rainshield NT

(mancozeb)
 
Group M
1.1 to 3.25 kg/ha
(0.44 to 1.3 kg/acre)
14
  • Repeat at weekly intervals.
  • Start applications when runners begin to form or at first sign of disease.
  • Direct spray for thorough coverage of upper and lower leaf surfaces.

Manzate DF

(mancozeb)

Group M

2.25 to 3.25 kg/ha
(0.9 to 1.3 kg/acre)

Apply in 200 to 1000 L/ha (80 to 405 L/acre) of water

14
  • Repeat at 5 to 7 day intervals.
  • Do not apply where runoff is likely to occur.

Penncozeb 75DF

(mancozeb)
 
Group M
1.1 to 3.25 kg/ha
(0.44 to 1.3 kg/acre)
14
  • Start applications when runners begin to form.
  • Repeat at weekly intervals.
  • Do not enter treated area for 24 hours.

Penncozeb 75DF Raincoat

(mancozeb)
 
Group M
1.1 to 3.25 kg/ha
(0.44 to 1.3 kg/acre)
14
  • Start applications when runners begin to form.
  • Repeat at weekly intervals.
  • Do not enter treated area for 24 hours.

Maestro 80DF

(captan)
 
Group M
2.25 to 4.25 kg/ha
(0.9 to 1.7 kg/acre)
2
  • Registered on cucumbers only.
  • Repeat at 5 to 7 day intervals.
  • Do not enter treated area for 48 hours.

Supra Captan 80WDG

(captan)
 
Group M
2.25 to 4.25 kg/ha
(0.9 to 1.7 kg/acre)
2
  • Registered on cucumbers only.
  • Repeat at 5 to 7 day intervals.
  • Do not enter treated area for 48 hours.

*PHI = Pre-harvest interval
BUFFERS – Refer to product label for buffer requirements, and consult the Vegetable Production Guide: Pesticide Regulations and Safety (PDF).
PESTICIDE GROUP DETAILS – see the Vegetable Production Guide: Pesticide Toxicity Table (PDF).

Vines gradually wilt and die. The fungus lives in soil and is carried on seed.

Control

  • Sterilize soil, flats and greenhouse benches as outlined in the Vegetable Production Guide: Planting (PDF).
  • Use seed treated with Thiram seed protectant.
  • Avoid overwatering.
  • Maintain or build up soil humus.
  • Do not grow cucurbits continuously in the same field.

Leaves develop a white powdery growth. Under severe conditions plants are completely defoliated by mid-August.

Control

  • Avoid fields which tend to have heavy dews and prolonged morning mists.
  • Select resistant varieties when possible. Earlisweet muskmelon has some tolerance.
  • Bravo is somewhat effective. Applications must commence prior to onset of the disease. Late applications would have to be applied by aircraft due to runnering of the plants. The results may not justify the expense of the spray program. Do not apply Bravo within 1 day of harvest.

Chemical Control of Powdery Mildew

Product Rate PHI* Comments

Bravo 500

(chlorothalonil)
 
Group M
4.8 L/ha
(1.9 L/acre)
1
  • Repeat at 7 day intervals.

Echo 90DF

(chlorothalonil)
 
Group M

2.7 kg/ha
(1.1 kg/acre)

Apply in 50 to 1600 L/ha (20 to 650 L/acre) of water

1
  • Repeat at 7 to 10 day intervals.
  • Maximum of 8 applications per season.
  • Do not enter treated area for 48 hours.
  • Do not apply within 10 days before or after an oil application.

Echo 720

(chlorothalonil)
 
Group M

3.3 L/ha
(1.3 L/acre)

Apply in 50 to 1600 L/ha (20 to 650 L/acre) of water

1
  • Repeat at 7 to 10 day intervals.
  • Maximum of 8 applications per season.
  • Do not enter treated area for 48 hours.
  • Do not apply within 10 days before or after an oil application.

Cueva

(copper octanoate)
 
Group M1
Use a 0.5% to 2% solution at 470 to 940 L/ha (190 to 380 L/acre) 1
  • For a 0.5% solution, mix 1 part Cueva to 200 parts water.
  • For a 2% solution, mix 1 part Cueva to 50 parts water.
  • Repeat at 7 to 10 day intervals.
  • Repeat at 5 to 7 day intervals following heavy rain or when disease pressure is high.
  • Do not make more than 15 applications per year.
  • Time applications so that 12 hours of dry weather follow application.
  • Do not re-enter treated area for 4 hours.

Inspire

(difenoconazole)

Group 3
512 mL/ha
(207 mL/acre)
0
  • Apply at 7 to 10 day intervals.
  • Maximum 2.04 L/ha (825 mL/acre) per crop per season.
  • Water volume varies for diseases. See label for details.
  • May be tankmixed with Revus or Bravo 500
  • For labeled diseases, follow most restrictive directions including rate, PHI, maximum applications and re-entry interval.

Nova 40W

(myclobutanil)
 
Group 3
175 g/ha
(70 g/acre)

Apply in 250 L/ha (100 L/acre) of water
3
  • Repeat at a 10 to 14 day interval.
  • Do not apply more than 2 times per year.
  • Do not re-enter treated areas for 12 areas.

Proline 480 SC

(prothioconazole)
 
Group 3
210 to 420 mL/ha
(85 to 170 mL/acre)

Apply in 100 L/ha (40 L/acre) of water at 275 kPa
7
  • Apply as a foliar spray.
  • Repeat at 5 to 10 day intervals.
  • Apply with a non-ionic surfactant, AgSurf or Agral 90, at 0.125% v/v.
  • Do not exceed 1.26 L/ha ( 510 mL/acre) per crop year.
  • Observe a plantback interval of 30 days for crops not listed.
  • Do not re-enter for 3 days for hand-line irrigation.  For all other activities, do not re-enter for 24 hours.

Aprovia

(benzovindiflupyr)
 
Group 7

500 to 750 mL/ha

(200 to 300 mL/acre)

Apply in 150 L/ha (60 L/acre of water)

1
  • Apply as a broadcast foliar.
  • Repeat using a 7 to day interval.
  • Do not apply more than 3 L/ha (1.2 L/acre) per season.
  • Observe a plantback interval of 6 months for crops not listed.
  • Do not re-enter treated area for 12 hours.

Aprovia Top

(benzovindiflupyr/
difenoconazole)
 
Group 3 & 7
761 to 967 mL/ha
(308 to 391 mL/acre
 
Apply in 150 L/ha (60 L/acre) of water.
1
  • Apply as a broadcast foliar spray.
  • Repeat using a 7 day interval.
  • Do not apply more than 3.9 L/ha (1.6 L/acre) per season.
  • Observe a plantback interval of 60 days for sweet corn and 6 months for crops not listed.
  • Do not re-enter treated area for 12 hours.

Fontelis

(penthiopyrad)

Group 7
1.25 L/ha
(500 mL/acre)

Apply in 110 L/ha (45 L/acre) of water
1
  • Repeat at 7 to 14 day intervals.
  • Do not apply more than 4.9 L/ha (2.0 L/acre) per season.
  • Do not re-enter for 12 hours.

Sercadis

(fluxapyroxad)
 
Group 7
250 to 333 mL/ha
(101 to 135 mL/acre)

Apply in 100 L/ha (40 L/acre) of water
0
  • Repeat at 7 to 14 day intervals.
  • Do not make more than 3 applications per season.
  • Do not apply more than 1.0 L/ha (405 mL/acre) per season.
  • Do not apply as a tankmix with any other fungicides, insecticides, herbicides, adjuvants, liquid fertilizers, nutrients or any other additives other than water.
  • No more than 2 consecutive applications before alternating with a fungicide with a different mode of action.
  • Do not enter treated area for 12 hours.
  • For crops not listed, observe a plant back interval of 1 year.

Property 300SC

(pyriofenone)
 
Group U8
0.3 to 0.366 L/ha
(120 to 148 mL/acre)
 
Apply in 200 to 1000 L/ha (80 to 400 L/acre) of water
0
  • Start applications prior to disease development.
  • Repeat using a 7 to 10 day interval beginning with initial flowering.
  • Do not apply more than 1.2 L/ha (0.5 L/acre) per year.
  • Do not make more than 2 consecutive applications of this product or other group U8 fungicide before rotating to a fungicide in a different group.
  • Observe a plantback interval of 1 year for cereal grains; and for all other crops not listed, observe a plantback interval of 30 days. 
  • Do not re-enter treated area for 12 hours.

Vivando SC

(metrafenone)
 
Group U8
0.750 to 1.12 L/ha
(300 to 450 mL/acre)
0
  • Use with a non-ionic surfactant according to the adjuvant label.
  • Repeat at 7 to14 day intervals.
  • Do not make more than 3 applications per season.
  • Do not apply more than 3.36 L/ha per season.
  • Avoid using Vivando SC if it has been used on the area during the previous season. 
  • Do not re-enter treated area for 12 hours.

Quadris Top

(azoxystrobin/ difenoconazole)
 
Group 11 & 3
710 to 1000 mL/ha
(287 to 405 mL/acre)
 
Apply in at least 150 L/ha (60 L/acre) of water
1
  • Repeat at 7 to 14 day intervals
  • Do not apply more than 4 times per season.
  • Do not re-enter treated areas for 12 hours.
  • Observe a plant back interval of 60 days for crops not listed on this label or the Inspire label.

Pristine WG

(boscalid and pyraclostrobin)

Group 7 & 11
0.9 to 1.3 kg/ha
(360 to 525 g  g/acre)
4
  • Repeat at 7 to 14 day intervals.
  • Maximum of 4 applications per season.
  • Do not apply more than 5.2 kg/ha (2.1 kg/acre) per season.
  • Do not re-enter for hand harvesting, thinning, pruning and turning for 3 days.  For all other activities do not re-enter for 12 hours.

Elatus

(benzovindiflupyr/
azoxystrobin)
 
Group 11 & 7
500 g/ha
(202 g/acre)
 
Apply in 150 L/ha (60 L/acre) of water.
1
  • Apply as a broadcast foliar application.
  • Repeat at 7 day intervals.
  • Do not apply more than 1.5 kg/ha (0.6 kg/acre) per season.
  • Observe a plantback interval of 6 months for crops not listed.

Cabrio EG

(pyraclostrobin)

Group 11
560 to 840 g/ha
(220 to 340 g/acre)

Apply in at least 350 L/ha (140 L/acre) of water.
3
  • Repeat at 7 to 14 day intervals.
  • Do not apply more than 4 times per season.
  • Do not enter treated area for hand-harvesting for 3 days and for all other activities, do not enter for 12 hours.
  • Do not use treated crop for feed.

Quintec

(quinoxyfen)

Group 13
300 to 440 mL/ha
(120 to 180 mL/acre)
3
  • Registered on melon, pumpkins and winter squash.
  • Apply at 10 to 14 day intervals.
  • Maximum 4 applications per season.
  • Observe plant back interval of 1 year for cereals, all other crops not on label maybe be planted 30 days after last application.
  • Toxic to bees; do not apply to flowering crop.
  • Do not enter treated area for 12 hours.

Diplomat 5SC

(polyoxin D zinc salt)
 
Group 19
463 to 926 mL/ha
(187 to 375 mL/acre)
0
  • Repeat using a 7 to 14 day interval.
  • Do not apply more than 2.8 L/ha (1.1 L/acre) per season or 12 months.
  • May be used in the greenhouse.

Double Nickel 55

(Bacillus amyloliqufaciens strain D747)
 
Group 44
1 to 2.5 kg/ha
(0.4 to 1 kg/acre)
 
For smaller plants or low disease pressure: 
0.5 to 1 kg/ha (200 to 400 g/acre).
0
  • Suppression only.
  • Apply as a foliar spray from fruit formation to end of crop maturity.
  • Repeat at 3 to 10 day intervals.
  • Do not use highly alkaline or highly acidic water to mix sprays.
  • If necessary, use a buffering agent to maintain a pH of 6 to 8 in the water of the tank. 
  • Do not re-enter treated area for 4 hours.

Double Nickel LC

(Bacillus amyloliqufaciens strain D747)
 
Group 44
5 to 12.5 L/ha
(2 to 5 L/acre)
 
For smaller plants or low disease pressure: 
2.5 to 5 L/ha (1 to 2 L/acre).
0
  • Suppression only.
  • Apply as a foliar spray from fruit formation to end of crop maturity.
  • Repeat at 3 to 10 day intervals.
  • Do not use highly alkaline or highly acidic water to mix sprays.
  • If necessary, use a buffering agent to maintain a pH of 6 to 8 in the water of the tank. 
  • Do not re-enter treated area for 4 hours.

MilStop

(potassium bicarbonate)

Used in organics
2.8 to 5.6 kg/ha
(1.13 to 2.27 kg/acre)

Apply in 1000 L/ha (400 L/acre) of water.
0
  • Suppression only.
  • Repeat using a 7 to 14 day interval.
  • Do not apply more than 10 times per season.
  • Do not enter treated area for 4 hours.
  • Milstop products are OMRI-USA listed.  Check with your certification body before using in an organic operation.

Actinovate

(Streptomyces lydicus)
 
Used in organics
420 g/ha
(170 g/acre)\
 
Apply in 470 to 800 L/ha (190 to 320 L/acre) of water.
0
  • Suppression only.
  • Repeat at 7 to 14 day intervals.
  • Actinovate products are OMRI-USA listed.  Check with your certification body before using in an organic operation.

Serenade Opti

(Bacillus subtilis)
 
Used in organics.
1.7 to 3.3 kg/ha
( 690 to 1300 g/acre)
0
  • Suppression only.
  • Begin applications soon after emergence or transplant.
  • Repeat applications using 7 to 10 day intervals
  • Serenade Opti (PCP# 31666) is OMRI-Canada listed.  Check with your certification body before using in an organic operation.

Tivano

(Citric acid & lactic acid)

Fermentation products of Lactobacillus casei strain LPT-111

8% dilution in water solution

Apply in 500 to 700 L/ha (200 to 280 L/acre) of water

0
  • Suppression only.
  • Use only on squash and pumpkins.
  • Repeat at 7 to 10 day intervals.
  • Shake well before using.
  • Do not re-enter until spray has dried.

Regalia Maxx

(extract of Reynoutria sachalinensis)
 
Used in organics.

0.125 to 0.25% v/v

Apply in 500 to 1000 L/ha (200 to 400 L/acre) of water

0
  • Suppression only.
  • Repeat at 7 to 10 day intervals.
  • Regalia Maxx (PCP# 30199) is OMRI-Canada listed.  Check with your certification body before using in an organic operation.

Influence WP

(garlic powder)
6.9 to 8.0 kg/ha
(2.8 to 3.2 kg/acre)

Apply in 700 L/ha (280 L/acre) of water.
0
  • Suppression only.
  • Registered on cucumbers, pumpkins, winter and summer squash.
  • Repeat at 7 to 14 day intervals.
  • Do not make more than 4 applications per season.
  • Individuals who are sensitive or allergic to garlic should avoid handling this product.
  • Do not re-enter treated area until spray is dried.

Purespray Green Spray Oil 13E

(mineral oil)
 
Used in organics
10 L of product in 1000 L of water (1% solution) N/A
  • Suppression only.
  • Use up to 1000 L/ha (400 L/acre) spray volume to ensure thorough coverage.
  • Repeat at 7 to 14 day intervals.
  • Do not make more than 8 summer spray applications per growing season.
  • For first use on a new variety, test spray a small field area to check for plant tolerance prior to adoption as a general field practice.
  • A period of 14 days must elapse before chlorothalonil (Bravo) is applied before or after an application of Purespray Green Spray Oil 13E.
  • Do not apply during periods of drought, when plants exhibit moisture stress. 
  • Do not enter treated area for 12 hours.
  • Purespray Green Spray Oil 13E (PCP# 27666) is OMRI-Canada listed.  Check with your certification body before using in an organic operation.

*PHI = Pre-harvest interval
BUFFERS – Refer to product label for buffer requirements, and consult the Vegetable Production Guide: Pesticide Regulations and Safety (PDF).
PESTICIDE GROUP DETAILS – see the Vegetable Production Guide: Pesticide Toxicity Table (PDF).

OMRI-Canada = Organic Materials Review Institute of Canada.
OMRI-USA = Organic Materials Review Institute of USA.

The causal fungus is soil or seed-borne. First, lower leaves wilt and drop, then petioles turn yellow and wither and, finally, the entire plant may wilt. It is usually worse on light, sandy soils in the Interior, and where root lesion nematodes are also present.

Control

  • Disinfect used seedling trays prior to use as outlined in the Vegetable Production Guide: Planting (PDF).
  • Grow seedlings in sterilized soil or soilless mix.
  • Use seed treated with Thiram seed protectant.
  • Follow a four-year rotation plan, avoiding crops susceptible to Verticillium wilt (e.g. potatoes, tomatoes, peppers and eggplants).
  • Choose a soil that is well-drained and not underlain by hardpan.
  • Do not plant out until soil temperature has reached 14°C or, if possible, 16°C.
  • Avoid over-watering and maintain a high humus content in the soil.
  • Select resistant varieties.

(Sclerotinia)

Fruit becomes covered with white cottony mould, and later small black hard bodies (sclerotia) appear in the rotting tissue. Stems can also be blighted; older vines are more often affected.

Control

  • Rotate crops and deep plow to bury sclerotia.
  • If only a few plants are infected, remove them from the field and destroy; do not dump cull fruit back on the field.

RootShield WP (Trichoderma harzianum Rifai strain KRL-AG2) is a biological fungicide for the suppression of Root Rot in greenhouse vegetable transplants.  When applied to transplants, greenhouse planting mix or soil, the product grows into plant roots as they develop to protect roots against Pythium, Rhizoctonia and Fusarium. 

Suppression

  • Suspend RootShield WP using a spray volume of 30 to 45 g/100 L and apply at the rate of 55 to 110 g per cubic metre (loose) of greenhouse potting mix, soil or planting beds. 
  • Apply using hand-held backpack or ground spray equipment. 
  • Becomes active when soil temperatures are above 10 degrees C and is not effective while soils remain cold.
  • More effective at suppression of root rot in neutral or acidic soils.  
  • Should be used within 12 months of the date of manufacture. 
  • Contains the allergens wheat and sulfites.
RootShield WP is used in organics.  It is OMRI-USA listed.  OMRI-USA = Organic Materials Review Institute of USA.  Check with your certification body before using in an organic operation.
 

Chemical Control of Root Rot

Product Rate PHI* Comments

Torrent 400 SC

(cyazofamid)
 
Group 21
30 mL/100 L water 60
  • Registered on greenhouse cucumber transplants for field production.
  • Controls Pythium damping-off and Root Rot (Pythium spp.)
  • Apply once in the greenhouse as a soil drench to thoroughly wet the growing medium immediately after seeding.
  • Do not use a surfactant.
  • Do not enter treated area for 12 hours.

Serenade Soil

(QST 713 strain of dried Bacillus subtilis)
 
Used in organics.

 

2.7 to 14 L/ha
(1.1 to 5.7 L/acre)
0
  • Suppresses Fusarium Root Rot.
  • Serenade Soil (PCP# 30647) is OMRI-Canada listed.  Check with your certification body before using in an organic operation.

Transplant drench:

  • Apply as a drench at the time of transplanting.
  • Apply at a rate to thoroughly soak the growing media through the root zone or as a drench or directed spray using sufficient water to soak the root zone.

Post-plant applications:

  • Additional applications may be made to the soil as a drench or spray directed towards the base of the plant.
  • Irrigate to move material into the seed, root or transplant zone within 24 hours.

*PHI = Pre-harvest interval
BUFFERS – Refer to product label for buffer requirements, and consult the Vegetable Production Guide: Pesticide Regulations and Safety (PDF).
PESTICIDE GROUP DETAILS – see the Vegetable Production Guide: Pesticide Toxicity Table (PDF).

OMRI-Canada = Organic Materials Review Institute of Canada.

Chemical Control of Downy Mildew

Product Rate PHI* Comments

Bravo 500

(chlorothalonil)
 
Group M
4.8 L/ha
(1.9 L/acre)
1
  • Repeat at 7 day intervals.
  • Do not apply more than 7 times per season.

Penncozeb 75DF

(mancozeb)
 
Group M
1.1 to 3.25 kg/ha
(0.44 to 1.3 kg/acre)
14
  • Start applications when runners begin to form or at first sign of disease.
  • Repeat at weekly intervals.
  • Do not enter treated area for 24 hours.

Penncozeb 75DF Raincoat

(mancozeb)
 
Group M
1.1 to 3.25 kg/ha
(0.44 to 1.3 kg/acre)
14
  • Start applications when runners begin to form or at first sign of disease.
  • Repeat at weekly intervals.
  • Do not enter treated area for 24 hours.

Cueva

(copper octanoate)
 
Group M1
Use a 0.5% to 2% solution at 470 to 940 L/ha (190 to 380 L/acre) 1
  • For a 0.5% solution, mix 1 part Cueva to 200 parts water.
  • For a 2% solution, mix 1 part Cueva to 50 parts water.
  • Repeat at 7 to 10 day intervals.
  • Repeat at 5 to 7 day intervals following heavy rain or when disease pressure is high.
  • Do not make more than 15 applications per year.
  • Time applications so that 12 hours of dry weather follow application.
  • Do not re-enter treated area for 4 hours.

Reason 500SC

(fenamidone)

Group 11

400 mL/ha
(160 mL/acre)

Apply in 300 to 600 L/ha(120 to 240 L/acre) of water

14
  • Repeat at 5 to 10 day intervals.
  • Do not apply more than 4 times per year.
  • Do not enter treated area until residues have dried.

Diplomat 5SC

(polyoxin D zinc salt)
 
Group 19
463 to 926 mL/ha
(187 to 375 mL/acre)
0
  • Suppression only.
  • Repeat using a 5 to 8 day interval.
  • Do not apply more than 2.8 L/ha (1.1 L/acre) per season or 12 months.
  • May be used in the greenhouse.

Torrent 400 SC

(cyazofamid)
 
Group 21
150 to 200 mL/ha
(60 to 80 mL/acre)

Apply in 200 to 600 L/ha (80 to 240 L/acre) of water.
1
  • Repeat at 7 to 10 day intervals.
  • Do not apply more than 6 times per year.
  • Tank mix with a non-ionic or organosilicone surfactant such as Sylgard 309 at the manufacturer's label recommendations.
  • Observe a 30 day plantback interval for crops not listed.
  • Do not enter treated area for 12 hours.

Allegro 500 F

(fluazinam)

Group 29
1.75 L/ha
(710 mL/acre)

Apply in 280 to 470 L/ha (115 to 190 L/acre)
30
  • Registered on cantaloupe only.
  • Apply as a foliar broadcast spray.
  • Repeat using a 7 day application interval.
  • Do not make more than 6 applications.
  • See label for plantback interval details.
  • Do not enter treated area for 24 hours.

Phostrol

(mono- and dibasic sodium, potassium, and ammonium phosphites)
 
Group 33
2.9 to 5.8 L/ha
(1.2 to 2.3 L/acre)
 
Apply in 225 L/ha (90 L/acre) of water.
0
  • Supression only.
  • Repeat at 7 to 14 day intervals.
  • Do not make more than 7 applications per season.
  • Do not re-enter treated area for 12 hours.

Confine Extra        

(mono- and di-potassium salts of phosphorous acid)
 
Group 33

3 to 5 L/ha
(1.2 to 2.0 L  /acre)

Apply in 100 L/ha (40 L/acre) of water.

1
  • Suppression only.
  • Repeat using a 7 to 14 day interval.
  • Do not make more than 6 applications per growing season.
  • Tankmixing with pesticide products containing a metal base and/or micronutrients may not be compatible and could potentially cause plant injury.  See label for details.

Revus

(mandipropamid)

Group 40
400 to 600 mL/ha
(160 to 240 mL/acre)

Apply in at least 100 L/ha (40 L/acre) of water
0
  • Suppression only.
  • Use a non-ionic adjuvant (0.125% v/v).
  • Repeat at 7 to 10 day intervals.
  • Do not apply more than 4 times per year.
  • May be tank-mixed with Bravo 500. Check Bravo Label for PHI and re-entry intervals.
  • Do not apply to greenhouse-grown seedlings to be transplanted in the field, until after they have been transplanted out.
  • Do not enter treated area for 12 hours.

Forum

(dimethomorph)
 
Group 40
450 mL/ha
(182 mL/acre)
 
Apply in 200 L/ha (80 L/acre) of water.
2
  • Apply as a tank mix with another fungicide in this table that is active against downy mildew. Observe most restrictive directions including rate, PHI and re-entry interval.
  • Repeat using a 5 to 10 day spray interval.
  • Maximum of 5 applications per season
  • Observe a plant back restriction of 120 days for a new crop in the treated area.
  • Do not re-enter to perform hand-harvesting, hand pruning, thinning, leaf-pulling or turning activities for 2 days.

Zampro

(ametoctradin & dimethomorph)
 
Group 40 & 45
0.8 to 1.0 L/ha
(300 to 400 mL  /acre)

Apply in at least 200 L/ha (80 L/acre) of water.
1
  • Repeat at 5 to 7 day intervals.
  • Do not apply more than 3 times per season.
  • Use a spreading/penetrating  adjuvant.
  • Do not re-enter for hand harvesting, pruning or thinning for 1 day.  For all other activities, do not re-enter for 12 hours.
  • Do not use in greenhouses.
  • Observe a plantback interval of 30 days for all crops not on the label.

Presidio

(fluopicolide)

Group 43
292 mL/ha
(118 mL/acre)

Apply in 200 to 1000 L/ha (80 to 400 L/acre) of water
2
  • Tank-mix with a product that has a different mode of action listed in this table for downy mildew. Follow most restrictive directions including rate, PHI and re-entry interval.
  • Repeat using a 7 to 10 day interval.
  • Do not apply more than 2 times per season.
  • Maximum of 880 mL/ha (356 mL/acre) per season
  • Do not enter treated for 12 hours.

Orondis

(oxathiapiprolin)
 
Group 49
88 to 350 mL/ha
(35 to 140 mL/acre
 
Apply in 110 L/ha (45 L/acre) of water.
0
  • Repeat using a 5 to 14 day interval.
  • Where multiple crop cycles are produced in the same year, do not make more than 6 applications/ha/year.
  • Do not apply more than 1.40 L/ha (570 mL/acre) per season.
  • Do not re-enter treated area for 12 hours.

Serenade Opti

(Bacillus subtilis)
 
Used in organics.
0.6 to 1.7 kg/ha
(240 to 690 g/acre)
0
  • Suppression only.
  • Begin applications soon after emergence or transplant.
  • Repeat using a 7 to 10 day interval.
  • Serenade Opti (PCP# 31666) is OMRI-Canada listed.  Check with your certification body before using in an organic operation.

Regalia Maxx

(extract of Reynoutria sachalinensis)

Used in organics.

0.125 to 0.25% v/v

Apply in 500 to 1000 L/ha (200 to 400 L/acre) of water
0
  • Suppression only.
  • Repeat at 7 to 10 day intervals.
  • Regalia Maxx (PCP# 30199) is OMRI-Canada listed.  Check with your certification body before using in an organic operation.

*PHI = Pre-harvest interval
BUFFERS – Refer to product label for buffer requirements, and consult the Vegetable Production Guide: Pesticide Regulations and Safety (PDF).
PESTICIDE GROUP DETAILS – see the Vegetable Production Guide: Pesticide Toxicity Table (PDF).

OMRI-Canada = Organic Materials Review Institute of Canada.

Chemical Control of Gummy Stem Blight
Product Rate PHI* Comments

Aprovia

(benzovindiflupyr)

Group 3

750 mL/ha

(300 mL/acre)

Apply in 190 L/ha (75 L/acre of water)

1
  • Apply as a broadcast foliar.
  • Repeat using a 7 to day interval.
  • Do not apply more than 3 L/ha (1.2 L/acre) per season.
  • Observe a plantback interval of 6 months for crops not listed.
  • Do not re-enter treated area for 12 hours.

Inspire

(difenoconazole)

Group 3

512 mL/ha
(207 mL/acre)
0
  • Suppression only.
  • Apply at 7 to 10 day intervals.
  • Maximum 2.04 L/ha (825 mL/acre) per crop per season.
  • Water volume varies for diseases. See label for details.
  • May be tankmixed with Revus or Bravo 500
  • For labeled diseases, follow most restrictive directions including rate, PHI, maximum applications and re-entry interval.

Proline 480 SC

(prothioconazole)

Group 3

210 to 420 mL/ha

(85 to 170 mL/acre)

Apply in 100 L/ha (40 L/acre) of water at 275 kPa

7
  • Apply at plant through drip or drench equipment.
  • Follow with foliar treatments.
  • Repeat using a 5 to 10 day interval.
  • Apply with a non-ionic surfactant, AgSurf or Agral 90 at 0.125% v/v.
  • Do not apply more than 1.26 L/ha ( 510 mL/acre) per crop year.
  • Observe a plantback interval of 30 days for crops not listed.
  • Do not re-enter for 3 days for hand-line irrigation.  For all other activities, do not re-enter for 24 hours.

Aprovia Top

(benzovindiflupyr/

difenoconazole)

Group 3 & 7

967 mL/ha

(391 mL/acre

Apply in 190 L/ha (75 L/acre) of water.
1
  • Suppression only.
  • Apply as a broadcast foliar spray.
  • Repeat using a 7 day interval.
  • Do not apply more than 3.9 L/ha (1.6 L/acre) per season.
  • Observe a plantback interval of 60 days for sweet corn and 6 months for crops not listed.
  • Do not re-enter treated area for 12 hours.

Lance WDG / Cantus WDG

(boscalid)

Group 7
460 g/ha
(186 g/acre)
0
  • Repeat at 7 to 14 day intervals.
  • Do not make more than 4 applications per season.
  • Do not enter treated area for 12 hours.
  • For crops not on the label, observe a plant back interval of 14 days.

Sercadis

(fluxapyroxad)

Group 7
333 mL/ha
(135 mL/acre)

Apply in 100 L/ha (40 L/acre) of water
0
  • Suppression only.
  • Repeat at 7 to 14 day intervals.
  • Do not make more than 3 applications per season.
  • Do not apply more than 1.0 L/ha (405 mL/acre) per season.
  • Do not apply as a tankmix with any other fungicides, insecticides, herbicides, adjuvants, liquid fertilizers, nutrients or any other additives other than water.
  • No more than 2 consecutive applications before alternating with a fungicide with a different mode of action.
  • Do not enter treated area for 12 hours.
  • For crops not listed, observe a plant back interval of 1 year.

Elatus

(benzovindiflupyr/

azoxystrobin)

Group 11 & 7

500 g/ha

(202 g/acre)

Apply in 190 L/ha (75 L/acre) of water.
1
  • Apply as a broadcast foliar application.
  • Repeat at 7 day intervals.
  • Do not apply more than 1.5 kg/ha (0.6 kg/acre) per season.
  • Observe a plantback interval of 6 months for crops not listed.

Quadris Top

(azoxystrobin/ difenoconazole)

Group 11 & 3

710 to 1000 mL/ha

(287 to 405 mL/acre)

Apply in at least 190 L/ha (80 L/acre) of water
1
  • Repeat at 7 to 14 day intervals
  • Do not apply more than 4 times per season.
  • Do not re-enter treated areas for 12 hours.
  • Observe a plant back interval of 60 days for crops not listed on this label or the Inspire label.

Diplomat 5SC

(polyoxin D zinc salt)

Group 19

463 to 926 mL/ha

(187 to 375 mL/acre)
0
  • Suppression only.
  • Repeat using a 7 to 14 day interval.
  • Do not apply more than 2.8 L/ha (1.1 L/acre) per season or 12 months.
  • May be used in the greenhouse.

Allegro 500 F

(fluazinam)

Group 29
1.75 L/ha
(710 mL/acre)

Apply in 280 to 470 L/ha (115 to 190 L/acre) of water
30
  • Registered on cantaloupe only.
  • Apply as a foliar broadcast spray.
  • Repeat using a 7 day application interval.
  • Do not make more than 6 applications.
  • See label for plantback interval details.
  • Do not enter treated area for 24 hours.

*PHI = Pre-harvest interval
BUFFERS – Refer to product label for buffer requirements, and consult the Vegetable Production Guide: Pesticide Regulations and Safety (PDF).
PESTICIDE GROUP DETAILS – see the Vegetable Production Guide: Pesticide Toxicity Table (PDF).