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These demonstration and replicated studies provide information that can be used by Virginia corn growers to make better management decisions on their farms. Refer to individual results for more details.
Corn hybrid selection continues to be challenging. With more seed companies and more GMO options and seed treatment packages than ever before, hybrid selection can be a difficult decision. We evaluated early maturity hybrids (107 day RM or less) at 2 locations, mid maturity hybrids (108-112 day RM) at 7 locations and full season hybrids (113 day RM or more) at 4 locations. The Chesapeake location had early and mid-season entries, and as a maturity group, the mid-season hybrids yielded 18 bushels per acre higher than the early hybrids. The Ag-Expo site in Northumberland County had all three maturity groups, and under drier conditions, the mid maturity group yielded 4 bushels per acre better than the early hybrids. Farmers should continue to plant hybrids of multiple maturities to help spread risk. In fields with very good soil types and/or irrigation, farmers should consider mid or full season hybrids.
Virginia Cooperative Extension materials are available for public use, reprint, or citation without further permission, provided the use includes credit to the author and to Virginia Cooperative Extension, Virginia Tech, and Virginia State University.
Issued in furtherance of Cooperative Extension work, Virginia Polytechnic Institute and State University, Virginia State University, and the U.S. Department of Agriculture cooperating. Edwin J. Jones, Director, Virginia Cooperative Extension, Virginia Tech, Blacksburg; M. Ray McKinnie, Administrator, 1890 Extension Program, Virginia State University, Petersburg.
December 11, 2014