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This article in AJ

  1. Vol. 56 No. 2, p. 184-186
    Received: Aug 26, 1963

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Effect of Water Solubility and Granule Size of Phosphorus Fertilizers on Alfalfa Grown in a Calcareous Soil1

  1. S. D. Romsdal and
  2. W. R. Schmehl2



Yield and P uptake were increased by increasing the water solubility or decreasing the granule size of the fertilizers. There was a water-solubility ✕ granule-size interaction but solubility had little influence on yields with the 40-mesh or smaller materials. The effectiveness of fertilizers having 47% or more solubility tended to be independent of size. The influence of solubility on yield and P uptake was reduced with successive cuttings or by incubating the soil-fertilizer system before cropping.

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