Guess the Pest! Week 10 Answer: Rapid Physiological Growth

David Owens, Extension Entomologist, and Jarrod O. Miller, Extension Agronomist,

I apologize for not updating the webform with last week’s image. Those who guessed sulfur deficiency based on the image from Jarrod Miller showing leaf stripping will be entered for the end-of-year raffle.

This from Mark VanGessel:

When corn grows very rapidly and leaves do not unroll, younger leaves become trapped by outer leaves. When outer leaves open, the inside leaves are chlorotic for one to two days. Leaves quickly turn green and symptoms disappear.

This is most likely to be observed after side-dressing nitrogen when growing conditions are ideal. Some hybrids are more prone to developing these symptoms than others.

So, your corn is growing very well. Keep that sweep net handy to make sure our six-legged friends stay out!

Yellowed field corn

deformed field corn