Penn State Extension reminds corn growers who are replanting that the various genetic, insect-resistant traits and seed-applied treatments offered are not always necessary.

With more resistance to Bt corn occurring, Iowa State University Extension recommends growers develop a long-term integrated pest management approach for corn rootworm.

You are trying to manage your various risks in crop production, double checking weed and insect management plans.

Wayne Bailey, University of Missouri Extension specialist in plant sciences, urges Missouri corn producers to keep an eye out for indications of corn rootworm, caused by continuous planting of Bt hybrid corn on cropland.

Properly handling the residue at harvest is key to preparing for the next crop.

The possibility that some Bt-containing corn hybrids have higher lignin content than their non-genetically modified counterparts represents an unintended effect with no known mechanism, says Michael Lehman of the USDA-ARS-North Central Agricultural Research Lab in Brookings, S.D.