Bug Scout 1981
Not All Corn Lodging Caused by Rootworms
(Tom Turpin, Entomologist, Purdue University)
I bet you a dime that lodging is not caused by rootworm
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September 5, 1981

Corn rootworms are called rootworms because they feed on the roots of corn plants.  Corn roots supply the plant with water, nutrients, and support.

Rootworm feeding can cause corn plants to lodge at ground level.  Lodging reduces the ability of the plant to produce an ear and makes harvesting difficult.

Not all lodging is caused by rootworm damage.  Lodging can result when corn roots are small due to high plant populations or nutrient deficiencies.  Herbicide damage can also result in deformed roots and cause lodging.  Wind and rain can cause plants to lodge.  Some hybrids are more susceptible to lodging than others.

If lodged plants show up in your corn this year, first determine the cause.  Then decide on the best management practice to reduce lodging.  Remember insecticides can't prevent lodging caused by factors other than rootworm.

by Tom Turpin, Entomologist, Purdue University

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