Effect of available soil N on growth, yield and N, fixation by common bean
Date
1997-02-20
Authors
de Silva, N.K.D.C.
Slinkard, A.E.
Walley, F.L.
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Abstract
Two common bean cultivars were grown in a low nitrogen (N), stubble field with and without Rhizobium inoculation. Four rates of nitrogen fertilizer were applied. In addition, double enriched ammonium nitrate (10% atom excess) was used in microplots to estimate percentage nitrogen derived from the atmosphere (%Ndfa). Increased rates of N fertilizer resulted in increased plant height and yield and decreased %Ndfa. Inoculation of bean with granular Rhizobium inoculant enhanced N, fixation and improved seed yield.
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Soils and Crops Workshop