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This article in SSSAJ

  1. Vol. 28 No. 4, p. 539-541
     
    Received: Sept 19, 1963
    Published: July, 1964


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doi:10.2136/sssaj1964.03615995002800040026x

Sulfate-Sulfur Concentration as an Indicator of Sulfur Status in Various California Dryland Pasture Species1

  1. Milton B. Jones2 and
  2. W. E. Martin3

Abstract

Abstract

Sulfate-sulfur values in subclover and soft chess under high N fertilizer were approximately equal over a wide range of S fertilizer levels. With no fertilizer N the SO4-S values of annual grasses including soft chess were higher than those of rose or subclover. Hardinggrass was particularly high in SO4-S. Where no N was applied the SO4-S concentration in subclover decreased as the plants advanced from early vegetative to flowering stage. When plants began to wilt at the end of the season, the SO4-S values increased over SO4-S levels at flowering. Subclover and rose clover, sampled during the flowering period but before wilting, appeared to be the best plants for determining the S status of dryland pastures in California.

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