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This article in AJ

  1. Vol. 55 No. 3, p. 271-274
    Received: Sept 24, 1962

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Root Activity Distribution Patterns of Sorghum and Soil Moisture Conditions1

  1. F. S. Nakayama and
  2. C. H. M. van Bavel2



Relative root activity measurements using P32 uptake and soil-water depletion data show that approximately 90% of root activity of sorghum plants occurred in the top 3 feet. Root growth rates were from 0.75 to 2.0 inches per day.

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