This year continues the chain of growing seasons with extremes and rapid changes beyond our long-term experiences. This made for periods of both stress and favorable crop growth despite the planting dates. Frost, potentially killing in the northern half of Iowa, is expected between October 11-13. USDA data indicate a wide range of maturity due to planting date, but the periods of hot weather scattered through September and early October may have reduced the potential for very high moisture corn and soybean. Variability will be the key issue to manage in 2019 corn and soybeans.
Iowa State University
Hurburgh, Charles R. and Bowers, Erin Louise, "Crop Quality in 2019: Another Unusual Year" (2019). Integrated Crop Management News. 2578.
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