Bug Scout 1982
Rootworm Control Adds Support High Yields
(Tom Turpin, Entomologist, Purdue University)
You sort of get the feeling that some of the corn lodging could be caused by the wind!
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November 6, 1982

In some places corn harvest is all over but the shouting!  Coffeeshop talk about yields has caused more than one honest man to stretch the truth a bit.  If your bragging rights to high yields have been dampened by lodged corn, consider the cause.

Corn rootworm damage can cause corn to lodge at the roots.  Rootworm-caused lodging almost always occurs about silking time.  Most root-lodged corn will try to grow upright again, producing "goosenecked" or "sled-runner" stalks.

Corn that lodges later in the year, due to wind and rain, is not likely to produce goosenecked stalks.  This type of lodging will not be corrected by rootworm control.

If rootworm damage cut into your corn yields and coffeeshop bragging rights this year, an insecticide applied at planting might be beneficial.  Remember good rootworm control depends on the insecticide, proper placement, and proper rates.  Now is a good time to begin to plan for next year's rootworm control.

by Tom Turpin, Entomologist, Purdue University

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