Hostname: page-component-848d4c4894-pftt2 Total loading time: 0 Render date: 2024-05-01T16:54:12.987Z Has data issue: false hasContentIssue false
  • English
  • Français

Effects of Spacing on Cowpea Genotypes in Papua New Guinea

Published online by Cambridge University Press:  03 October 2008

W. Erskine  and
T. N. Khan
W. Erskine
Affiliation:
Faculty of Agriculture, University of Papua New Guinea, Box 4820 University P.O., Papua New Guinea
T. N. Khan
Affiliation:
Faculty of Agriculture, University of Papua New Guinea, Box 4820 University P.O., Papua New Guinea
Get access Rights & Permissions [Opens in a new window]

Summary

The effects of populations of 33,000–250,000 plants/ha on growth and grain yield of two cowpea genotypes of bush growth habit was studied in lowland Papua New Guinea. The optimum economic seed rate seems to be 100,000 plants/ha; increasing the plant population decreased pods/plant and lateral branch development, but increased seed number/pod. Genotype UV.53 yielded more than UV.19 due to a combination of all three yield components, and a large dry weight. Growth analysis showed that treatment effects were mediated by differences in growth between 8 weeks and harvest.

Type
Research Article
Information
Experimental Agriculture , Volume 12 , Issue 4 , October 1976 , pp. 401 - 410
Copyright
Copyright © Cambridge University Press 1976

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Boulter, D., Evans, I. M., Thompson, A. & Yarwood, A. (1973). Nutritional Improvement of Food Legumes by Breeding. Protein Advisory Group, U.N. System.Google Scholar
CSIRO (1965). CSIRO Melbourne, Land Research Series 14.Google Scholar
Ebong, U. U. (1970). Niger. Agric. J. 7, 5.Google Scholar
Enyi, B. A. C. (1974a). Ghana J. Sci. 13, 78.Google Scholar
Enyi, B. A. C. (1974b). Expl Agric. 10, 87.CrossRefGoogle Scholar
Ezedinma, F. O. C. (1965). Niger. Agric. J. 2, 32.Google Scholar
Haizel, K. A. (1972). Ghana J. Agric. Sci. 5, 163.Google Scholar
Johnson, R. M. & Raymond, W. D. (1964). Trop. Sci. 6, 68.Google Scholar
Khan, T. N., Erskine, W., Lamb, K. P. & Keane, P. J. (1974). Science in New Guinea 2, 90.Google Scholar
Khan, T. N. & Ashley, J. M. (1975). Expl Agric. 11, 315.CrossRefGoogle Scholar
Ojehomon, O. O. & Bamiduro, T. A. (1971). Niger. Agric. J. 8, 11.Google Scholar
Panse, V. G. & Sukhatme, P. V. (1967). Statistical Methods for Agricultural Workers (2nd edn.). New Delhi: Indian Council Agric. Res.Google Scholar
Rubaihayo, P. R., Radley, R. W., Khan, T. N., Mukubi, J., Leakey, C. L. A. & Ashley, J. M. (1973). Nutritional Improvement of Food Legumes by Breeding. Protein Advisory Group, U.N. System.Google Scholar
Summerfield, R. J., Huxley, P. A. & Steele, W. (1974). Field Crop Absts 15, 259.Google Scholar