Potassium (K) fertilization is important for high yields in forage crops such as alfalfa. While K fertilizer has historically been cheap compared to the other major macronutrients, supplying removal rates to alfalfa annually can result in a significant expense to alfalfa producers. Research from the University of Minnesota clarifies when it makes sense to apply K, when it doesn't, and what factors to keep in mind.
From the University of Minnesota, here's how to cut back on nutrient application to increase your profitability while maintaining the integrity of your crops.
As 2010 gets underway and growers plan for the upcoming crop season, applying potassium (K) fertilizer may be more important than ever. According to a study released last fall by the International Plant Nutrition Institute (IPNI), 39 percent of the soils across North America were in negative balance for K, and this study didn't take into consideration the cutbacks of the 2009 growing season.
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On this episode of Conservation Ag Update, brought to you by Martin-Till, Brian and Darren Hefty, fourth-generation farmers and hosts of Ag PhD, share tips for treating tar spot in corn.
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