What causes ears of corn not to fill out completely?

Gardens & Landscapes October 19, 2011 Print Friendly and PDF

Lack of corn ear fill can stem from a variety of causes. Hot, dry weather can result in poor pollination. Periods of heavy rain when pollen is shedding can also be a problem, as can planting a very small patch or a single row of corn. In these situations, the corn cannot pollinate adequately. Certain nutrient imbalances, particularly high nitrogen or low potassium, also can cause ears of corn to fill out improperly.

Connect with us

  • Facebook


This is where you can find research-based information from America's land-grant universities enabled by eXtension.org



This work is supported by the USDA National Institute of Food and Agriculture, New Technologies for Ag Extension project.