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African Crop Science Journal
African Crop Science Society
ISSN: 1021-9730 EISSN: 1021-9730
Vol. 5, No. 1, 1997, pp. 15-22
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Bioline Code: cs97003
Full paper language: English
Document type: Research Article
Document available free of charge
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African Crop Science Journal, Vol. 5, No. 1, 1997, pp. 15-22
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Effects of planting pattern, relative planting date and intra-row spacing on a haricot bean/maize intercrop
Fininsa, Chemeda
Abstract
Performance of five bean (Phaseolus vulgaris L.) genotypes grown in mixed
and row intercropping pattern with maize (Zea mays L.) or sole cropping,
were evaluated in the Hararghe highlands of Ethiopia. Under intercropping,
bean and maize grain yields were reduced on the average by 67% and 24%,
respectively. The effects of five relative planting dates of the two crops
and three intra-row spacings on bean performance and maize grain yield in
mixed intercropping were also evaluated. Delayed maize planting and
simultaneous bean and maize planting improved bean seed yield. With
simultaneous planting, bean yield was increased by 48.5%. In contrast,
delayed bean planting and a 0.10 m bean intra-row spacing increased maize
grain yield and reduced bean seed yield. The productivity of the bean/maize
intercrop as determined by Land Equivalent Ratio was superior, in all
combinations, compared to sole cropping. A maximum of 28% relative yield
advantage was obtained with intercropping.
Keywords
Phaseolus vulgaris L., Zea mays, Land Equivalent Ratio
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fr |
Fininsa, Chemeda
Résumé
La performance de cinq genotypes de haricot eleves en culture mixte et en
rangs avec le mais et en monoculture etaient evaluee sur le plateau d'
Haraghe en ethiopie. Les recoltes de haricot et du mais variaient
significativement selon le systeme de culture. En culture mixte, la recolte
de haricot et du mais etait reduite par 67% et 24% respectivement. Les
effets de cinq dates relatives de semis de deux plantes et trois distances
entre les rangs sur la performance de haricot et la recolte du mais en
culture mixte etaient aussi evalues. Un semis tardif du mais et un semis
des haricots et du mais simultane augmentent la recolte de haricot. En
utilisant la plantation simultanee, la recolte augmentait de 48.5%.
Contrairement, un semis tardif de haricot et un espacement au sein des
rangs de 0.10 m avec de haricot augmentent la recolte du mais et diminuent
la recolte de haricot. La productivite de la culture mixte haricot/mais
determinee par le rapport l'equivalent-terre etait superieure dans toutes
les combinaisons. Un avantage en recolte relative de 28% au maximum etait
obtenu avec la culture mixte.
Mots Clés
culture mixte, espacement entre les rangs, rapport equivalent-terre, date de plantation
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© Copyright 1997 - African Crop Science Society
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