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Agronomy Journal Abstract -

Nonuniform Distribution of Fertilizer and Its Effect on Corn Yields1


This article in AJ

  1. Vol. 63 No. 3, p. 415-417

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  1. G. W. Langdale,
  2. D. L. Myhre and
  3. R. J. Miller2



Nonuniform distribution of a homogeneous mixed fertilizer was evaluated at six nonuniform levels with a modified split plot design on a Plinthic Paleudult soil during 1961 and 1962. Observed and calculated yield losses resulting from ≤ 50% nonuniform band fertilization are presented.

Fertilizer variations greater than 40% were required to obtain significant (P ≤ .05) experimental yield losses. Standard partial regression coefficients and plant tissue nutrient contents suggest that nonuniform distribution of N provided a primary influence on yield loss rather than P or K. Concomitant losses of N in leaf tissue and grain yields due to nonuniform distribution were related. Crop yield losses resulting from expected fertilizer variation becomes more serious when related to uniform-profit maximizing conditions.

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