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Evaluation of Alternative Legumes for Green Manure and Grain under African Highland Conditions

Published online by Cambridge University Press:  03 October 2008

M. J. Potts ,
E. Biranguza  and
C. Bweyo
M. J. Potts
Affiliation:
The International Potato Centre and Programme d'Amélioration de la Pomme de terre, Institut des Sciences Agronomiques du Burundi, Station de Gisozi, BP 75, Bujumbura, Burundi
E. Biranguza
Affiliation:
The International Potato Centre and Programme d'Amélioration de la Pomme de terre, Institut des Sciences Agronomiques du Burundi, Station de Gisozi, BP 75, Bujumbura, Burundi
C. Bweyo
Affiliation:
The International Potato Centre and Programme d'Amélioration de la Pomme de terre, Institut des Sciences Agronomiques du Burundi, Station de Gisozi, BP 75, Bujumbura, Burundi
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Summary

Three species of lupin, three vetches and a soyabean were evaluated as green manures under tropical highland conditions. With moderate soil fertility and 150 days of rain, all lupin types and a locally obtained vetch gave yields of about 80 t ha−1 fresh material. Under less favourable conditions, low soil pH and high aluminium saturation, only Lupinus luteus achieved these yields. During the short season, with about 60 days of rain, the yield of L. luteus was reduced to 30 t ha−1 and establishment of the vetches was slow and they yielded poorly. Growth of soyabean was poor under cool conditions. Under fertile conditions, lupin grain yields of up to 5.2 t ha−1 were obtained in the long season but in the short season, yields were less than 1 t ha−1. Rhizoctonia solani was the major disease encountered.

Type
Research Article
Information
Experimental Agriculture , Volume 25 , Issue 1 , January 1989 , pp. 109 - 118
Copyright
Copyright © Cambridge University Press 1989

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