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Nitrogen Nutrition of Cowpea (Vigna unguiculata). I. Effects of Applied Nitrogen and Symbiotic Nitrogen Fixation on Growth and Seed Yield*

Published online by Cambridge University Press:  03 October 2008

R. J. Summerfield ,
P. J. Dart ,
P. A. Huxley ,
A. R. J. Eaglesham ,
F. R. Minchin  and
J. M. Day
R. J. Summerfield
Affiliation:
Department of Agriculture and Horticulture, Plant Environment Laboratory, University of Reading, Shinfield, Reading
P. J. Dart
Affiliation:
Department of Agriculture and Horticulture, Plant Environment Laboratory, University of Reading, Shinfield, Reading
P. A. Huxley
Affiliation:
Department of Agriculture and Horticulture, Plant Environment Laboratory, University of Reading, Shinfield, Reading
A. R. J. Eaglesham
Affiliation:
Department of Agriculture and Horticulture, Plant Environment Laboratory, University of Reading, Shinfield, Reading
F. R. Minchin
Affiliation:
Department of Agriculture and Horticulture, Plant Environment Laboratory, University of Reading, Shinfield, Reading
J. M. Day
Affiliation:
Department of Agriculture and Horticulture, Plant Environment Laboratory, University of Reading, Shinfield, Reading
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Summary

Effectively nodulated cowpea plants, grown in pots without applied nitrogen, were vegetatively equal to non-nodulated plants supplied with 60 ppm N throughout growth (88 days) and produced significantly greater seed yields. Supplying non-nodulated plants with 120 or 240 ppm N improved seed yields (but not significantly) compared with plants completely dependent on symbiotic fixation. Nodulation promoted branching, and improved pod set and/or retention compared with plants relying on applied N.

Type
Research Article
Information
Experimental Agriculture , Volume 13 , Issue 2 , April 1977 , pp. 129 - 142
Copyright
Copyright © Cambridge University Press 1977

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References

REFERENCES

Allos, H. F. & Bartholomew, M. W. (1959). Soil Sci. 87, 61.Google Scholar
Dart, P. J., Day, J. & Harris, D. (1972). Use of isotopes for study of fertilizer utilization by legume crops, 85. FAO/IAEA Tech. Bull. 149.Google Scholar
Dart, P. J. & Mercer, F. V. (1965). Aust. J. agric. Res. 16, 321.Google Scholar
Eaglesham, A. R. J. & Dart, P. J. (1975). Proc. Grain Legume Workshop, 140. Nigeria: IITA.Google Scholar
Greenland, D. J. (1973). African Soils 17, 99.Google Scholar
Henson, I. E. & Wheeler, C. T. (1976). New Phytol. 76, 433.Google Scholar
Huxley, P. A. & Summerfield, R. J. (1976). Ann. appl. Biol. 83, 259.Google Scholar
Johnson, W. A. & Evans, C. E. (1975). J. Am. Soc. Hort. Sci. 100, 261.Google Scholar
Minchin, F. R., Huxley, P. A. & Summerfield, R. J. (1976). Expl Agric. 12, 279.Google Scholar
Nangju, D. (1973). Proc. Grain Legume Workshop, 112. Nigeria: IITA.Google Scholar
Nutman, P. S. (1971). Sci. Prog. 59, 55.Google Scholar
Rachie, K. O. & Roberts, L. M. (1974). Adv. Agron. 26, 1.Google Scholar
Russell, E. W. (1968). Proc. Fertil. Soc. 101, 13.Google Scholar
Skene, K. G. M. (1975). In The Development and Function of Roots, 365 (Ed. Torrey, J. G. & Clarkson, D. T.). London: Academic Press.Google Scholar
Summerfield, R. J., Huxley, P. A. & Steele, W. (1974). Field Crop Abs. 27, 301.Google Scholar
Summerfield, R. J., Huxley, P. A., Dart, P. J. & Hughes, A. P. (1976). Plant & Soil 44, 527.CrossRefGoogle Scholar
Worley, R. E., Hegwood, D. A. & Harmon, S. A. (1971). J. Am. Soc. Hort. Sci. 96, 531.Google Scholar