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Plant Population, Rainfall and Sorghum Production in Botswana. II. Development of Farmer Recommendations

Published online by Cambridge University Press:  03 October 2008

M. J. Jones
M. J. Jones
Affiliation:
Dryland Farming Research Scheme, Agricultural Research Station, Sebele, P/Bag 0033, Gaborone, Botswana
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Summary

Regional population recommendations for sorghum production in Botswana were calculated by applying long-term meteorological records to an experimentally developed model linking sorghum yield to plant population and rainfall. The basic recommendation at any place was taken to be that population maximizing local long-term yield means while keeping the risk of crop failure to one year in ten or less. Values ranged from 25 000 to nearly 70 000 plants ha−1, according to rainfall amount and reliability. The modifications of these basic recommendations necessary to allow for differences in standards of husbandry and for sorghum variety are discussed.

Type
Research Article
Information
Experimental Agriculture , Volume 23 , Issue 3 , July 1987 , pp. 349 - 356
Copyright
Copyright © Cambridge University Press 1987

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References

REFERENCES

DLFRS (1985). Spacing Studies of Sorghum and Maize. Dryland Farming Research Scheme, Phase III. Final Report, Volume 1. Sebele, Botswana: Agricultural Research Station.Google Scholar
Jones, M. J. (1987). Plant population, rainfall and sorghum production in Botswana. I. Results of experiment station trials. Experimental Agriculture 23:335–347CrossRefGoogle Scholar