1. Re-evaluating Phosphorus and Potassium Management for Corn, Soybean, and Wheat in Ontario

In Ontario, long term trends show decreasing soil test P and K levels as high crop yields in corn, soybeans, and wheat remove more nutrients than are being replaced through nutrient application. Deficiencies or insufficient available P and K from either the soil, fertilizer applications, or both, could mean that modern yields of these crops are not fully reaching their potential. A long-term project was established between 2010 and 2012 on 4 field sites in Ontario to compare two different fertilizer... D. Hooker, C. Elgie