Planting Date, Maturity, and Temperature Effects on Soybean Seed Yield and Composition

Shawn P. Conley, Soybean and Wheat Extension Specialist, Department of Agronomy, University of Wisconsin, Madison

Soybean maturity selection is an important management decision. Maturity group (MG) zones represent regions where a cultivar is best-adapted without implying that MG-specific cultivars cannot be grown elsewhere (Boerma and Specht, 2004). Most recently, Mourtzinis and Conley (2017) redelineated MG zones across the U.S. using 2005-2015 yield variety trial data. In their study, although the zones were generated using a vast amount of information, the results are restricted to the planting date (PD) range of the variety trials.

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