Diagnosing Nutrient Deficiencies

Nutrient deficiencies can seriously impact crop yield. Certain deficiencies are seen every year in Ontario field crops, such as nitrogen deficiency in corn and manganese deficiency in soybeans. Others are brought on or made worse by environmental conditions – for example, potassium deficiency in soybeans and boron deficiency in alfalfa (Figure 1) during dry spells. […]

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Phosphorus and Potassium Management for Corn, Soybeans, and Wheat

Crop yields have increased significantly since fertility recommendations were developed in Ontario. Crop nutrient uptake and grain nutrient removal have increased proportionately.  A study was initiated in 2011 with funding from the Grain Farmers of Ontario to evaluate a corn-soybean-wheat rotation on four sites with relatively low soil test P and K levels.  Areas within […]

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Nitrogen Fertilizer: Does It Help Build Soil Organic Matter?

Co-written by Dr. Laura Van Eerd, Associate Professor, Nitrogen Fertility and Cover Crops, University of Guelph Ridgetown Campus Soil organic matter (OM) is the single most important soil health property that you have influence over through your management. Soil OM is all living, dead or long dead (and decomposed) material. Higher soil organic matter translates […]

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