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This article in AJ

  1. Vol. 48 No. 10, p. 444-449
    Received: Feb 13, 1956

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The Distribution of Excreta by Freely Grazing Cattle and Its Effect on Pasture Fertility: II. Effect of Returned Excreta on the Residual Concentration of Some Fertilizer Elements1

  1. R. G. Petersen,
  2. W. W. Woodhouse and
  3. H. L. Lucas2



Data indicate that freely grazing animals distribute fertilizers inefficiently, the degree varying with size of the area effectively fertilized by each excretion and with the rate of loss of each element after application. The greatest benefit from excretal return of such elements, as P and K appear to be under conditions of high stocking rate and long periods of grazing time. Reliable values for such factors as effective area fertilizer per excretion and rate of nutrient loss are needed to estimate the effect of grazing animals on the fertility status of a pasture.

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