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- W2078403868 abstract "Information on the effect of row orientation on land productivity of intercropping systems, especially in a semi-arid environment is limited. Field trials were, therefore, carried out under full irrigation and rainfed conditions in a semi-arid region of South Africa (Bloemfontein, Free State) during 1998-2002. The trials evaluated the intercrop yield advantage in terms of land equivalent ratio (LER), energy value (EV) and monetary value (MV). Treatments included three cropping systems (sole maize, sole bean, and the intercrop) and two cultural practices, namely, row orientation (north-south row vs east-west row) and sowing date (November/December and January). Intercropping showed a higher yield advantage in terms of LER and EV compared to sole cropping. Therefore, intercropping has potential for increasing yields in the semi-arid regions of South Africa. Monetary value is influenced by fluctuations of the price ratio of crops, so it is not always a useful factor for evaluating the yield advantage. Key words: Land equivalent ratio, Phaseolus vulgaris, row orientation, Zea mays RÉSUMÉ L'information sur l'effet de l'orientation en rangé sur la productive des terres des systèmes d'intercultures, spécialement dams un environnement semi-aride est limite. Les essais sur le terrain étaient par conséquent menés sous une irrigation complète et conditions de pluie dans une région semi-aride de l'Afrique du sud [Bloemfontein, /état libre] on cours de 1998-2002. Les essais évaluaient l'avantage de la production d'interculture en termes de proportion équivalente de terre [LER], la valeur d'énergie [EV] et la valeur monétaire [VM]. Les traitements avaient inclus trois systèmes de cultures [maïs seul, haricot seul et une combinaison maïs-haricot] et deux pratiques culturales, à savoir, l'orientation en rangé nord-sud contre rangé Est-ouest] et la date des semailles [Novembre/Décembre et Janvier]. L'inter-culture a monté un avantage supérieur en terme de LER et EV, comparer aux cultures seules. Par conséquent, les cultures en combinaison ont une potentialité d'augmenter les rendements en région semi-aride de L'Afrique du sud. La valeur monétaire est influencée par les fluctuations de la proportion des prix de récoltes, donc n'est pas toujours un facteur utile pour l'évaluation de l'avantage du rendement. Mots clés: Proportion équivalente de terre, Phaseolus vulgaris, orientation en rangé, Zea mays African Crop Science Journal Vol.12(4) 2004: 351-358" @default.
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- W2078403868 date "2005-01-24" @default.
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- W2078403868 title "Yield evaluation of maize-bean intercropping in a semi-arid region of South Africa" @default.
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- W2078403868 doi "https://doi.org/10.4314/acsj.v12i4.27897" @default.
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