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- W2081803749 abstract "This study explores the effect of maize plant type on yields of bush and semi-climbing beans (Phaseolus vulgaris) planted at maize physiological maturity and describes how rainfall and pests determine the variants of this relay system used by farmers in Central America. It also investigates the possibility of avoiding end-of-season drought in bean relay crops by advancing their planting date relative to maize. Two trials to maize cultivars × bean planting data × bean cultivars in relay cropping were planted under experimental station conditions in Costa Rica. Two complementary trials were planted on farmers' fields in Nicaragua. There were no interactions of maize cultivar × bean cultivar, indicating that within the relay system, genetic improvement of maize and bush or semi-climbing beans may proceed separately, rather than simultaneously. When beans were planted at maize physiological maturity, differences in bean yield in relay with different maize cultivars were not significant. The mean advantage over sole cropping was 18%. When, however, beans were planted 20 days before maize physiological maturity, less-leafy maize cultivars depressed bean yield by 7%, while more-leafy cultivars depressed bean yield by 32%. Although the less-leafy maize cultivars used were earlier and yielded less, there was an economic advantage in using these, provided that the bean: maize price ratio was above 2.45. In order to plant beans before maize physiological maturity, attention should be paid to breeding less-leafy maize cultivars which are not earlier maturing and thus yield the same as present cultivars, while competing less with beans." @default.
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- W2081803749 date "1986-10-01" @default.
- W2081803749 modified "2023-10-17" @default.
- W2081803749 title "Maize plant types suitable for present and possible bean relay systems in Central America" @default.
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- W2081803749 doi "https://doi.org/10.1016/0378-4290(86)90098-5" @default.
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