Tuesday, May 12, 2009

Flooded Corn

Chad Lee, Extension Agronomist
Dept. of Plant and Soil Sciences, University of Kentucky

Across Kentucky there are some fields of corn that have been flooded.

Generally, if soil temperatures are above 70 degrees Fahrenheit for more than 24 hours, then corn will not survive. Usually the status of the corn crop will be known about two or three days after the flood event.

Much more details about flooded corn are given in AGR-193: Evaluating Flood Damage to Corn.

Some of this corn was stacked with both RR2 and LL traits. In these cases, the two best options are Select Max or paraquat plus linuron. The Select Max will provide better control, but will require no re-planting of corn for about 6 days. The paraquat + linuron will not provide as good of control, but will allow immediate re-planting of corn. AGR-6: Chemical Control of Weeds for Kentucky Grain Crops, page 22 contains more details about removing corn for a re-planting situation.

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