Yield, nodulation, and N2 fixation by cowpea cultivars at different phosphorus levels

  title={Yield, nodulation, and N2 fixation by cowpea cultivars at different phosphorus levels},
  author={A. B. Ankomah and Felipe Zapata and Gudni Hardarson and Seth Kofi Akyea Danso},
  journal={Biology and Fertility of Soils},
A greenhouse experiment was conducted to investigate the effect of a P application (0 vs. 50 mg P kg-1) on yield, nodulation, and N2 fixation by three cowpea cultivars (Soronko, Amantin, and IT81D-1137) using the 15N isotope-dilution method. When P was not applied the inoculated cowpea genotypes showed significant differences (Soronko>Amantin> IT81D-1137) in N accumulation, in contrast to the uninoculated cowpea cultivars, which accumulated similar amounts of N. The differences in shoot N in… CONTINUE READING

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Misconception and practical problems in the use of the aSN soil enrichment techniques for estimating N2 fixation

SKA Danso, G Hardarson, F Zapata
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Effect of P fertilization on the performance of cowpea ( Vigna unguiculata ) inoculated with solid inoculants

DS Daramola, NO Afolabi
Paper presented at the FAO IAEA / SIDA Research Co - ordination Meeting on Isotopic Studies on Increasing and Stabilizing Plant Productivity in Low Phosphate and Semi - arid and sub - humid Soils of the Tropics and Subtropics , held at the Vienna • 1989

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