Sprinkler Application of P and Zn Fertilizers
- G. W. Hergert and
- J. O. Reuss
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.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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