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This article in SSSAJ

  1. Vol. 31 No. 2, p. 215-219
    Received: July 25, 1966
    Accepted: Nov 11, 1966

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Utilization of Soil and Fertilizer N by Oats in Relation to the Available N Status of Soils1

  1. J. O. Legg and
  2. George Stanford2



Effects of rates of NaN15 O3 on the amounts of N derived by plants from soil and fertilizer in relation to the N and organic matter status of soils were determined. The 12 soils ranged more than fourfold in relative capacity to supply N to the crops. A values, with few exceptions, were independent of N level applied and were highly correlated with dry matter yields (r = 0.939) and total N uptake (r = 0.981) from zero-N pots. The uptake of soil N increased with level of N applied. This was attributed primarily to reactions involving rhizosphere microorganisms.

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