Competitive ability and growth habit of indeterminate beans and maize for intercropping

摘要: Abstract Two trials of 10 and 21 bean cultivars ( Phaseolus vulgaris ) respectively, planted with three maize cultivars, were grown at CIAT-Palmira (3°31′N, 1001 m.a.s.1.), trial 114 one cultivar was ICA-Obonuco (1°13′N, 2710 m a.s.1.). The relationship between the yield when intercropped negative. For each additional kilo yield, 1 2 kg lost due to competition. regression slope could be used predict in monoculture, reduction served as an index competitive ability varieties. Bean yields averaged 1000 kg/ha, maximum up 2400 maize. Maize 3500 kg/ha on average, a 5500 beans. 15% 30% beans, but there no relay cropping. most varieties yielded maize, these not necessarily highest yielding monoculture. taller, more vigorous, later maturity. genotypes also tall plant types. Somewhat shorter plants can give improved net income climbing provided they are resistant stem lodging. It is probable that greater efficiency production obtained by breeding genotypes, both beans which somewhat less competitive, paying special attention lodging resistance physiological under shade, nitrogen fixation.