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FAQ #33480

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What causes ears of corn not to fill out completely?

Related resource areas: Corn and Soybean Production, Gardens, Lawns & Landscapes

This problem can stem from a variety of causes. Hot, dry weather can result in poor pollination. Periods of heavy rain when pollen is shedding also can 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.

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