2020.09.16 Growing Insights
Sep 23, 2020
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Nutrient Report Card |
Based on tissue samples taken through WinField United’s NutriSolutions® tissue sampling program, an early report card of nutrient management success and struggles becomes apparent by looking at the most limiting nutrients at different growth stages of the crop this year. Below are the percent of MN tissue samples taken at various growth stages across MN that were deficient or responsive in the respective nutrient. During grand growth phase and reproductive stages in corn the last 2 years, sulfur, nitrogen, and potassium consistently show up as responsive/deficient.
Some of the top-down yellowing that we see in early September could be a slight representation of the manganese deficiency, of course, overlaid with the corn’s demand for sulfur that may be causing the top few leaves of the plant to take on a yellowish hue. Sulfur is critical late in the season for corn, and the rain’s this spring may have made sulfur management a bigger challenge. It may be too late to do anything dramatic about this now (for the 2020 crop), however, it’s a great reminder of the importance of managing macronutrients to make sure the work we do with micronutrients will have greater success. Now is the time to begin the conversation with your CFS representative on nutrient management needs going into 2021 based on some of the learnings from 2020! |