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Fluid Journal : Fall 2010
fits all), we need to provide a set of recommendations that meets the needs of our customers. Land tenure, financial position, and fertilization philosophies differ among the clientele using nutrient guidelines. We must provide nutrient management options if we are going to meet their "tailor-made" needs. By doing so, these nutrient guidelines will facilitate communication between the growers and their fertilizer suppliers, ag advisors, and/or lenders. Fertilizer response-based recommendations should be available for short-term land rental and financially limited positions, whereas build- maintenance recommendations should be available for land owners with a long- term nutrient management vision. Sulfur/micronutrients. Traditionally, S and micronutrients have received little attention on most highly productive Corn Belt soils. Corn yield responses to these nutrients were almost non-existent in the 20th century on higher organic matter and medium and fine-textured soils. This is changing as many responses to S and some to zinc (Zn) have been reported in the last few years. This trend is expected to continue, especially as a greater nutrient demand exists with very high- yield production. Priorities with respect to crop and nutrient studied will need to be made for each state. Bringing the highest priorities to potential funding sources (fertilizer industry, commodity groups, biofuel industry, and other agencies) should produce the kind of research that will lead to improved nutrient recommendations for all growers--not just those capable of very high yields. From my perspective, a well coordinated Midwest regional approach to new P recommendations would be a very good place to start. Dr. Randall is soil scientist/professor at the Southern Research and Outreach Center, University of Minnesota. CHELATE 10XL combines the benefits of 2 powerful chelating agents, EDTA and Citric Acid, creating the perfect balance to deliver maximum nutrition to the plant. learn more at: www.nulex.com Visit your Nulex Distributor or contact a sales representative at 800-831-4815 07 The Fluid Journal Fall 2010
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