Published on Monday, November 4, 2019
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STRESS AND EAR FORMATION
Ear and kernel development is a lengthy process for a corn plant. It begins at the V5 growth stage as the plant determines kernel rows around and then continues to V12 where the potential maximum length of the ear is determined. Next comes the pollination stages where the maximum number of kernels is established and then finally, R5 when the maximum kernel size is established.
Any stresses, natural or manmade, during this process, can lead to abnormal ear set. Many of the abnormal ears and their causes are detailed below. Accurate diagnosis of these abnormalities can help prevent future problems in the field.
INCOMPLETE KERNEL SET:
EAR TIP DIEBACK:
ZIPPER EAR (BANANA EAR):
PINCHED EAR (BEER BOTTLE EAR):
BLUNT EAR (BEER CAN EAR):
INCOMPLETE BASAL FILL:
Author: Travis Burnett
Categories: Agronomy, Agronomy Talk
Tags: corn, Agronomy, Agronomy Talk, CORN STRESS, Ear DEFORMITIES, ear stress, ear formation