5 Tips for Profitably Managing Sulfur

Sulfur is becoming increasingly important to crop production in Minnesota, writes Daniel Kaiser, University of Minnesota Extension Soil Fertility Specialist. Soil organic matter is a large storehouse for sulfur, but we still run into situations where the crop needs fertilizer S to maintain high yields. Here are five tips for getting the most out of sulfur applied to your fields:

1) Consider your crop

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First, consider your crop’s need for sulfur. Is the crop you’re planting responsive to sulfur? Alfalfa and canola are two crops grown in Minnesota that have a high sulfur demand and need an annual application. Corn is the most widely grown crop that has shown to benefit from sulfur application in some cases.

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2) Assess your need for sulfur with a soil sample

Soil tests for sulfur will not predict where yield deficiencies to S will occur. Instead, look at soil organic matter concentration in the top six inches to assess where deficiencies may occur. Deficiencies are most common when soil organic matter concentration is below 2.0% but can occur even up to 4.0% organic matter concentration.

Continue reading at Minnesota Crop News.

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