CHAMPAIGN, Ill. 鈥 A multiyear analysis tested whether management zone maps based on soil conditions, topography or other landscape features can reliably predict which parts of a cornfield will respond best to higher rates of seeding or nitrogen application. The study found that 鈥 contrary to common assumptions 鈥 crop responses to the same inputs vary significantly from year to year.
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Study: Management zone maps of little use to corn growers
Corn crop responses to the same seed or fertilizer inputs vary from year to year, says University of Illinois crop sciences professor Nicolas Martin, pictured, who conducted a study testing the reliability of management zone mapping.
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