COMPETITION EFFECTS OF DENSITY AND EMERGENCE TIME OF REDROOT PIGWEED (AMARANTHUS RETROFLEXUS) ON SOYBEAN YIELD

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ABBAS DOKHT H.; MAZAHERI D.; CHAICHI M.; RAHIMIAN H.; BAGHESTANI MEYBODI M.A.; ALIZADEH H.M.; SHARIFINIA F.

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Journal: Desert Year:2003 | Volume:8 | Issue:1 Page(s): 104-119

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Title

COMPETITION EFFECTS OF DENSITY AND EMERGENCE TIME OF REDROOT PIGWEED (AMARANTHUS RETROFLEXUS) ON SOYBEAN YIELD

Author(s)

Keywords

BIOLOGICAL INDEXQ3

COMPETITION EFFECTSQ4

DENSITYQ2

EMERGENCE TIMEQ4

REDROOT PIGWEEDQ4

SOYBEAN YIELDQ4

Abstract

Field experiment was conducted in order to evaluate REDROOT PIGWEED (Amaranthus retroflexus) COMPETITION EFFECTS on SOYBEAN YIELD. The experiment was carried out as a factorial in randomized complete block design with three replications. Different EMERGENCE TIMEs (Ve: REDROOT PIGWEED was planted at the same time as soybean; Vc: REDROOT PIGWEED was planted at the second trifoliate leaf stage of soybean; V2: REDROOT PIGWEED was planted at the second trifoliate leaf stage of soybean) and densities (10, 20 and 40 plants m-1) of REDROOT PIGWEED were studied. Controls included REDROOT PIGWEED, soybean and soybean with natural weeds planted as separate treatments. Soybean plant height, harvest index, biological yield and grain yield were statistically significant at various times of emergence and densities of REDROOT PIGWEED. Harvest index, biological yield and grain yield decreased with increasing REDROOT PIGWEED DENSITY. Harvest index, biological yield and grain yield were at minimum when REDROOT PIGWEED and soybean emerged simultaneously and REDROOT PIGWEED DENSITY was 40 plants m-1. When REDROOT PIGWEED emerged at the third trifoliate leaf stage of soybean, soybean plant height, harvest index, biological yield and soybean grain yield were unaffected by REDROOT PIGWEED DENSITY.

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APA: Copy

ABBAS DOKHT, H., MAZAHERI, D., CHAICHI, M., BAGHESTANI MEYBODI, M.A., ALIZADEH, H.M., SHARIFINIA, F., & RAHIMIAN, H.. (2003). COMPETITION EFFECTS OF DENSITY AND EMERGENCE TIME OF REDROOT PIGWEED (AMARANTHUS RETROFLEXUS) ON SOYBEAN YIELD. DESERT (BIABAN), 8(1), 104-119. SID. https://sid.ir/paper/5312/en

Vancouver: Copy

ABBAS DOKHT H., MAZAHERI D., CHAICHI M., BAGHESTANI MEYBODI M.A., ALIZADEH H.M., SHARIFINIA F., RAHIMIAN H.. COMPETITION EFFECTS OF DENSITY AND EMERGENCE TIME OF REDROOT PIGWEED (AMARANTHUS RETROFLEXUS) ON SOYBEAN YIELD. DESERT (BIABAN)[Internet]. 2003;8(1):104-119. Available from: https://sid.ir/paper/5312/en

IEEE: Copy

H. ABBAS DOKHT, D. MAZAHERI, M. CHAICHI, M.A. BAGHESTANI MEYBODI, H.M. ALIZADEH, F. SHARIFINIA, and H. RAHIMIAN, “COMPETITION EFFECTS OF DENSITY AND EMERGENCE TIME OF REDROOT PIGWEED (AMARANTHUS RETROFLEXUS) ON SOYBEAN YIELD,” DESERT (BIABAN), vol. 8, no. 1, pp. 104–119, 2003, [Online]. Available: https://sid.ir/paper/5312/en

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