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Effect of plant population on growth and yield of soya bean(Glycine max)

Published online by Cambridge University Press:  27 March 2009

B. A. C. Enyi
B. A. C. Enyi
Affiliation:
Faculty of Agriculture, University of Bar es Salaam, Tanzania
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Summary

In soya beans (var. 3H55F4/149/1) grown in Tanzania, the total dry matter per plant, pod weight/stem weight, shelling percentage, number of nodes per plant, number of pods per plant, percentage number of nodes with pods, number of filled pods per plant, number of branches per plant, and grain weight from side branches decreased with increase in plant density from 74 to 111, 222, and 444 thousand plants per hectare. Grain yield per hectare decreased by 38, 51, and 72% respectively with the increases in plant population, but yield of total dry matter per hectare showed a significant increase with density. Crop growth rate increased with increasing leaf area, which in turn increased with increasing plant density. Relative growth rate, however, decreased with rising population. Over the range of the densities studied grain yield was positively related to number of side branches but negatively related to dry-matter production, leaf area duration and percentage of light intercepted. The proportion of dry matter accumulated in the pods and side branches decreased with increase in population, whereas the proportion accumulated in the main stem increased. Light seems to be the major factor controlling grain yield in this variety of soya bean, low light intensity under the plant leading to a reduction in the number of side branches, number of pods per plant and number of nodes with pods.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 81 , Issue 1 , August 1973 , pp. 131 - 138
Copyright
Copyright © Cambridge University Press 1973

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References

Allison, J. C. S. (1969). Effect of plant population on the production and distribution of dry matter in maize. Ann. appl. Biol. 63, 135—44.CrossRefGoogle Scholar
Enyi, B. A. C. (1972 a). The effect of seed size and spacing on growth and yield of Lesser yam (Dioscorea esculenta). J. agric. Sci., Camb. 78, 215–25.CrossRefGoogle Scholar
Enyi, B. A. C. (1972 b). Effect of staking, nitrogen and potassium application on growth and yield in Lesser yam (Dioscorea esculenta). Ann. appl. Biol. 72, 211–19.CrossRefGoogle Scholar
Hodgson, G. L. & Blackman, G. E. (1956). Analysis of the influence of plant density on growth of Vicia faba(1). The influence of density on the pattern of development. J. exp. Bot. 7, 147–65.CrossRefGoogle Scholar
Hodgson, G. L. & Blackman, G. E. (1957). Analysis of the influence of plant density on the growth of Vicia faba(2). The significance of competition for light in relation to development at different densities. J. exp. Bot. 8, 195–219.CrossRefGoogle Scholar
Mahatanya, E. (1972). Comparative growth rates of two varieties of soya beans. M.Sc. Thesis, University of Dar es Salaam.Google Scholar
Wiggans, R. G. (1939). The influence of space and arrangement on the production of soyabean plants. J. Am. Soc. Agron. 31, 314–21.CrossRefGoogle Scholar
Williams, W. A., Looms, R. A. & Lepley, C. R. (1965 a). Vegetative growth of corn as affected by population density (1). Productivity in relation to interception of solar radiation. Crop Sci. 5, 211–15.CrossRefGoogle Scholar
Williams, W. A., Loomis, R. S. & Lepley, C. R. (1965 b). Vegetative growth of corn as affected by population density (2). Components of growth, net assimilation rate and leaf area index. Crop Sci. 5, 215–19.CrossRefGoogle Scholar