Nonuniform Distribution of Fertilizer and Its Effect on Corn Yields1
- G. W. Langdale,
- D. L. Myhre and
- 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.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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