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This article in AJ

  1. Vol. 68 No. 1, p. 5-8
    Received: Mar 6, 1975

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Sprinkler Application of P and Zn Fertilizers1

  1. G. W. Hergert and
  2. J. O. Reuss2



The rapid development of sprinkler irrigation in the Great Plains has stimulated interest in applying fertilizers in sprinkler irrigation water. Sprinkler application and conventional preplant application effects of P and Zn fertilizers on the dry matter yield, nutrient content, and grain yield of corn (Zea mays L.) were compared in 1968 and 1969. Both years preplant P treatments produced a significantly higher dry matter yield during the first 5 weeks of the growing season. No significant difference existed between P treatments after this time. In 1969 plants which received preplant P and Zn contained slightly higher concentrations of P and Zn than the plants which received sprinkler P and Zn. Grain yields were significantly increased by Zn application in 1968 but not in 1969. In 1968 on a Nunn clay loam soil (Aridic Argiustoll) the sprinkler-applied P did not move below a 4–5 cm depth. On a Haxtun loamy sand (Pachic Argiustoll) in 1969 sprinkler-applied P moved to a depth of approximately 18 cm. Sprinkler-applied Zn moved to a maximum depth of 5 cm on both soils.

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