Farmers are encouraged to wait until soil temperatures remain below 50 degrees Fahrenheit before applying anhydrous ammonia (NH3) fertilizer this fall. With the record early harvest this year, officials with the Iowa Department of Agriculture and Land Stewardship and Iowa State University (ISU) Extension and Outreach said that waiting can help reduce nitrogen loss and better protects the environment.
Iowa State University
Integrated Crop Management News, Iowa State University, "Farmers Reminded to Wait Until Soil Temps are 50 Degrees and Falling Before Applying Anhydrous Ammonia Fertilizer" (2012). Integrated Crop Management News. 143.
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