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With volatile crop and fertilizer prices, it can be tempting to cut costs and still hope to achieve optimal yields. The fertility required for a 2,000-pound canola crop (including residual soil fertility identified through soil tests and applied fertilizer) is 100 to 130 pounds of nitrogen, 50 pounds of phosphorus, 100 pounds of potassium and 30 pounds of sulfur. Contact your WinField representative to help you identify and correct nutrient deficiencies with the NutriSolutions 360® system (soil sampling and tissue sampling).
Boron is a soil-mobile nutrient that can move out of the root zone when there is a heavy rain.
MAX-IN® Boron micronutrient can be beneficial to yield when applied in the spring prior to bolting. MAX-IN® Boron micronutrient foliar-sprayed in the fall can help strengthen seedling canola that is entering dormancy, thus improving winter survivability.
While it may be appealing to apply nutrients at seeding to save on application costs, use caution, because canola is sensitive to fertilizer salts. Applying nutrients through top dressing or prior to seeding is the safest method.
Limit high rates of fall nitrogen applications to help keep the crop crown low to the ground. Applying some nitrogen can be beneficial during late planting to increase winterhardiness.
January or February is a good time to apply fertilizer to crops; applying it too late can limit the plant’s yield potential.
To ensure canola has adequate sulfur, apply 20 to 30 pounds of actual sulfur in the sulfate form. Ammonium sulfate is the preferred source for this vital nutrient.