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Effect of soil moisture on nodulation of cowpea and hyacinth bean

  • H. A. Habish (a1) and A. A. Mahdi (a1)
Summary
Summary

Pot experiments in which cowpea and hyacinth bean were grown at 15–45% soil moisture showed that nodulation, nitrogen fixation and plant growth were poor at 15%. The weights of nodules and plants were lower in January (winter) than in June (summer). In June cowpea was more tolerant of dry conditions giving good nodulation at 25–35% whereas hyacinth bean required 35–45%.

Under field conditions the number and dry weight of nodules were affected by the irrigation interval whereas plant growth was affected by the amount of water applied. Applying 75 mm depth of water every 7 days gave the best combination of nodulation and plant growth.

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This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

P. J. Dart & F. V. Mercer (1965). The effects of growth temperature, level of ammonium nitrate and light intensity on the growth and nodulation of cowpea (Vigna sinensis Endl. ex Haask.) Australian Journal of Agricultural Research 16, 43–5.

C. W. McKee (1961). Some effects of liming, fertilization and soil moisture on seedling growth and nodulation of birdsfoot trefoil. Agronomy Journal 53, 237–40.

D. O. Wilson (1975). Nitrogen fixation by soybeans as influenced by inoculum placement: greenhouse studies. Agronomy Journal 67, 76–8.

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The Journal of Agricultural Science
  • ISSN: 0021-8596
  • EISSN: 1469-5146
  • URL: /core/journals/journal-of-agricultural-science
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