Effect of Plant Population and Rates of Fertilizer Nitrogen on Average Weight of Ears and Yield of Corn in the South1

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Abstract
Synopsis: On Dewey silt loam (pH 6.8, high in available P and exchangeable K) average ear weight of corn decreased from 7.6 ounces at plant population of 6,000 to 6.4 and 4.8 for populations of 12,000 and 18,000 respectively. N fertilizer significantly increased corn yield, but with little or no increase above 40 pounds per acre with any plant population. The 12,000‐populations showed overall increases, including no nitrogen treatment, of 10.3 and 13.8 bushels per acre over the 18,000 and 6,000 plant populations.

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