Mousavi, K., Zand, E., Bagestani, M. (2005). Effects of crop density on interference of common bean (Phaseolus vulgaris L.) and weeds. , 73(No. 1), 79-92.
K. Mousavi; E. Zand; M. A. Bagestani. "Effects of crop density on interference of common bean (Phaseolus vulgaris L.) and weeds". , 73, No. 1, 2005, 79-92.
Mousavi, K., Zand, E., Bagestani, M. (2005). 'Effects of crop density on interference of common bean (Phaseolus vulgaris L.) and weeds', , 73(No. 1), pp. 79-92.
Mousavi, K., Zand, E., Bagestani, M. Effects of crop density on interference of common bean (Phaseolus vulgaris L.) and weeds. , 2005; 73(No. 1): 79-92.

Effects of crop density on interference of common bean (Phaseolus vulgaris L.) and weeds

آفات و بیماری‌ های گیاهی
Volume 73, No. 1 - Serial Number 79, September 2005, Pages 79-92    PDF (247 K)
Authors
K. Mousavi; E. Zand; M. A. Bagestani
Abstract
In order to evaluate interference of common bean and weeds an experiment was conducted during 2001-2002 growing season in LorestanProvince. The experimental design was a randomized complete block, with 4 replications. Treatments included crop density with 3 levels (20, 30, and 40 plants/m2) in presence, and absence of weeds. In presence of weed competition, crop biomass production was increased by 20%, as crop density increased from 20 to 40 plants/m2. Increasing crop density from 20 to 30, and 40 plants/m2, caused significant increase in crop grain yield (15.4, and 24.7 % respectively). Increasing crop density from 20 to 40 plants/m2, reduced total weed biomass by 30 %. In addition to weed biomass, crop plant density significantly influenced weed species richness. Weed species richness decreased as crop density increased. Weed biomass showed an asymptotic response to species richness. By increasing weed species richness, weed biomass in the beginning increased, and later by initiation of negative response, reached a relatively constant level. Common bean biomass production decreased as weed species richness increased. In fact, by increase in species richness, total biomass production per unit area increased, but the share of each species, among them bean, decreased.
Keywords
Common bean; weed interference; crop density
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