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A Long-Term Rotational and Manurial Trial in Uganda

Published online by Cambridge University Press:  03 April 2017

A. R. McWalter  and
R. H. Wimble
A. R. McWalter
Affiliation:
Serere Research Station, P.O. Soroti, Uganda
R. H. Wimble
Affiliation:
Serere Research Station, P.O. Soroti, Uganda
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Extract

Mean yields and average trends with time are given for cotton, finger millet and groundnuts grown in a rotational experiment during the period 1936–64. The experiment, which ran for five cycles, involved a five-year rotation with three different resting periods, five types of resting cover, and farmyard manure at three levels. Yield trends differed from crop to crop, and a critical level of total soil nitrogen is suggested in partial explanation. Responses to farmyard manure in most crops increased over die years, with increasingly marked negative curvature in a pattern that showed most strongly in cotton crops immediately following the application of manure.

Type
Research Article
Information
Experimental Agriculture , Volume 12 , Issue 3 , July 1976 , pp. 305 - 317
Copyright
Copyright © Cambridge University Press 1976

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References

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