Green Snap

On June 16—Monday evening—a storm front that moved through various regions of Iowa. This caused some green snap in some of our corn fields. Green snap can be a problem from V5 to V8—10-to-20 inch tall corn—and again from V12 thru tasseling.

Green snap is caused by

  • High winds.
  • Selected growth stages where the corn plant is dramatically increasing size (height).
  • Herbicide applications where a growth regulator was applied.

The early green snap damage will be less damaging to overall yield since the surrounding plants will have a greater opportunity to compensate than later growth stage damage.

Photo by Ohio State University Extension