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Bragantia

Print version ISSN 0006-8705

Abstract

BARROSO, Arthur Arrobas Martins; YAMAUTI, Micheli Satomi  and  ALVES, Pedro Luis da Costa Aguiar. Interference between weed species and two bean cultivars in two times of sowing. Bragantia [online]. 2010, vol.69, n.3, pp. 609-616. ISSN 0006-8705.  http://dx.doi.org/10.1590/S0006-87052010000300012.

Brazil is the world's largest producer of bean, but weed interference can cause yield losses between 15 to 80% due several factors such as bean cultivar and weed species in the area. The objective of this study was to evaluate the effects of six weed species on growth and productivity of two bean cultivars, in two sowing seasons. It was observed that the dicot plants cause more interference in the crop, especially Amaranthus viridis and Raphanus raphanistrum. All cause losses in bean yield except Eleusine indica that was less competitive. The ´Rubi´ bean cultivar is more productive and competitive than ´Carioca´, and the higher production is achieved during the drought sowing season. The choice of cultivar and correct season for sowing may be management strategy as in weeds control.

Keywords : competition; Phaseolus vulgaris; weeds; Amaranthus viridis; Raphanus raphanistrum.

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