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This article in AJ

  1. Vol. 52 No. 8, p. 443-446
     

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doi:10.2134/agronj1960.00021962005200080005x

Relationship of Nitrogen and Grain Sorghum Yield Under Three Moisture Regimes1

  1. A. C. Mathers,
  2. F. G. Viets,
  3. M. E. Jensen and
  4. W. H. Sletten22

Synopsis

Synopsis

This study indicated that sorghum yields can be predicted from nitrate analyses. A sampling depth of 4 feet seems necessary. Soil tests for N are of limited value in semiarid or arid areas without irrigation. Near maximum yields were obtained from 140 pounds of nitrate or nitrate plus fertilizer N per acre.

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