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Yield and Plant Development of Reduced Cotton Stands in Malawi

Published online by Cambridge University Press:  03 October 2008

G. A. Matthews ,
J. G. Rowell  and
P. Beeden
G. A. Matthews
Affiliation:
Agricultural Research Council of Malawi, Makoka Research Station, Thondwe, Malawi
J. G. Rowell
Affiliation:
Agricultural Research Council of Malawi, Makoka Research Station, Thondwe, Malawi
P. Beeden
Affiliation:
Chikwawa Cotton Development Project, Malawi Government
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Summary

Yield response to a range of plant densities (0·7–7·2 plants m.−2) achieved by uprooting plants at random was curvilinear, with an optimum plant density of 3·3 plants m.−2 at which fertilizer increased the yield at Makoka by over 1000 kg. ha.−1 to 2227 kg. ha.−1. There was no interaction between fertilizer and plant density. At Ngabu there was no response to fertilizer. Top dressing was effective on unfertilized cotton at Makoka, but filling in was ineffective at both sites. A method of partitioning components of yield is described which illustrates the stages of plant development which benefitted or were adversely affected by the different agronomic practices.

Type
Research Article
Information
Experimental Agriculture , Volume 8 , Issue 1 , January 1972 , pp. 33 - 48
Copyright
Copyright © Cambridge University Press 1972

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References

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