REDROOT PIGWEED (AMARANTHUS RETROFLEXUS L.), AND COMMON BEAN (PHASEOLUS VULGARIS L.) COMPETITION AT DIFFERENT PLANT DENSITIES

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MOSAVI K.; ZAND E.; BAGHESTANI M.A.

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Journal: Iranian Journal of Field Crops Research Year:2004 | Volume:1 | Issue:2 Page(s): 281-292

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Title

REDROOT PIGWEED (AMARANTHUS RETROFLEXUS L.), AND COMMON BEAN (PHASEOLUS VULGARIS L.) COMPETITION AT DIFFERENT PLANT DENSITIES

Author(s)

MOSAVI K. | ZAND E. | BAGHESTANI M.A. | Issue Writer Certificate

Keywords

COMMON BEANQ2

REDROOT PIGWEEDQ3

CROP PLANT DENSITYQ3

ECONOMIC THRESHOLDQ3

REDROOT PIGWEED SEED PRODUCTIONQ4

Abstract

In order to investigate the interference of COMMON BEAN and REDROOT PIGWEED an experiment was conducted during 2003 in Lorestan Province. The experimental design was a randomized complete block in 3 replications. The experiment had two factors: crop density at 3 levels (20, 30, and 40 plants/m2), and REDROOT PIGWEED density at 5 levels (0, 2, 4, 6, and 12 plants/m2). COMMON BEAN biomass showed an asymptotic response to REDROOT PIGWEED interference. REDROOT PIGWEED, and COMMON BEAN maximum dry matter per plant were 27.9, and 13.4 g/plant respectively, that show growth potential of this weed in comparison to COMMON BEAN. On the basis of logistic functions, REDROOT PIGWEED interference caused 35 % reduction of maximum COMMON BEAN biomass per plant. Final height of REDROOT PIGWEED (77 cm) was more than twice of the final height of COMMON BEAN. Coincident with REDROOT PIGWEED height raise, and overtopping (approximately 50 DAP) divergence between COMMON BEAN height in presence and absence of REDROOT PIGWEED initiated. Approximately 25 % of REDROOT PIGWEED biomass was located in a height above COMMON BEAN height. CROP PLANT DENSITY influenced ECONOMIC THRESHOLDs of REDROOT PIGWEED competition. By increasing crop density from 20 to 30, and 40 plants/m2, economic injury threshold increased from 0.5 to 1 and 2.7 plants/m2, respectively. Increasing crop density from 20 to 30, and 40 plants/m2, reduced REDROOT PIGWEED seed production 23 % and 39 %, respectively. CROP PLANT DENSITY was the main factor in competitive ability, and ECONOMIC THRESHOLD of COMMON BEAN.

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APA: Copy

MOSAVI, K., ZAND, E., & BAGHESTANI, M.A.. (2004). REDROOT PIGWEED (AMARANTHUS RETROFLEXUS L.), AND COMMON BEAN (PHASEOLUS VULGARIS L.) COMPETITION AT DIFFERENT PLANT DENSITIES. IRANIAN JOURNAL OF FIELD CROPS RESEARCH, 1(2), 281-292. SID. https://sid.ir/paper/119375/en

Vancouver: Copy

MOSAVI K., ZAND E., BAGHESTANI M.A.. REDROOT PIGWEED (AMARANTHUS RETROFLEXUS L.), AND COMMON BEAN (PHASEOLUS VULGARIS L.) COMPETITION AT DIFFERENT PLANT DENSITIES. IRANIAN JOURNAL OF FIELD CROPS RESEARCH[Internet]. 2004;1(2):281-292. Available from: https://sid.ir/paper/119375/en

IEEE: Copy

K. MOSAVI, E. ZAND, and M.A. BAGHESTANI, “REDROOT PIGWEED (AMARANTHUS RETROFLEXUS L.), AND COMMON BEAN (PHASEOLUS VULGARIS L.) COMPETITION AT DIFFERENT PLANT DENSITIES,” IRANIAN JOURNAL OF FIELD CROPS RESEARCH, vol. 1, no. 2, pp. 281–292, 2004, [Online]. Available: https://sid.ir/paper/119375/en

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