Demonstration trials can be used to show the effects of alternative fertilization practices on crop yields on real farms. Results can lead to adjustments in nutrient application practices that improve crop yield or quality, reduce fertilizer costs, or minimize the risks of nitrogen and phosphorus losses to the environment.
Blueberry Nitrogen Fertilization
In some blueberry varieties, excess nitrogen can delay dormancy, reduce bud set, and ultimately decrease yield potential. A trial was started in 2014 to evaluate the effects of different nitrogen application treatments (rates) over several years. The objective is to determine optimal treatments to optimize nitrogen use. Reports will be posted online as they are completed.
Presentation at the B.C. Blueberry Council field day on November 20, 2014:
The nitrogen fertilization trial was featured in a June 2015 article published in Orchard & Vine Online:
- Article in Orchard & Vine
- Correction: the breeding research in Pitt Meadows is separate from the nitrogen trials.
In the early 1990’s, vegetable producers in Cloverdale, B.C. participated in fertilizer trials that evaluated the effects of varying fertilizer rates, application timing and cover crops on yields among other things. In many cases, the producers could reduce input costs without risking a loss in profitability. The results are still very much relevant today.
- Cloverdale Soil Conservation Group Final Report: Part 2-Reports, Newsletters and Bulletins (PDF, 8.7 MB)