COMPETITION EFFECTS OF LAMBS QUARTERS (CHENOPODIUM ALBUM) ON PHYSIOLOGICAL CHARACTERISTICS AND RAPESEED YIELD (BRASSICA NAPUS CV. HYOLLA 401)

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MIRSHEKARI B.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: NEW FINDINGS IN AGRICULTURE Year:2013 | Volume:7 | Issue:2 (26) Page(s): 187-197

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Title

COMPETITION EFFECTS OF LAMBS QUARTERS (CHENOPODIUM ALBUM) ON PHYSIOLOGICAL CHARACTERISTICS AND RAPESEED YIELD (BRASSICA NAPUS CV. HYOLLA 401)

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MIRSHEKARI B. | Issue Writer Certificate

Keywords

GREEN COVERQ2

LEAF CHLOROPHYLE CONTENTQ2

ECONOMICAL DAMAGEQ3

HYOLLAQ2

Abstract

In order to determination of effects of lambsquarters (Chenopodium album L.) on physiological characteristics and yield of rapeseed (Brassica napus L.), cv. HYOLLA, a factorial experiment was carried out. Factors were weed densities (4, 8 and 12 plants per meter of row) and relative time of weed emergence (emerged with rapeseed, 15 and 30 days after crop emergence). Crop leaf area index decreased from 3.1 in control to 1.4 in full season interference of 12 weeds per meter of row (121% reduction). Regarding to LEAF CHLOROPHYLE CONTENT, difference between treatments of full season interference of 12 weeds and control was significant. Rapeseed GREEN COVER was the highest, when weed emerged 30 days after crop. Crop yield reduced 47%, compared with control, when 12 weeds competed with crop until late growth season. Rapeseed GREEN COVER, thousands seed weight and fruit number per plant could totally explain 895 of crop yield changes. Threshold of ECONOMICAL DAMAGE of lambsquarter in rapeseed field was in 4 weeds per meter of crop row in 30 days after emergence.

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APA: Copy

MIRSHEKARI, B.. (2013). COMPETITION EFFECTS OF LAMBS QUARTERS (CHENOPODIUM ALBUM) ON PHYSIOLOGICAL CHARACTERISTICS AND RAPESEED YIELD (BRASSICA NAPUS CV. HYOLLA 401). NEW FINDINGS IN AGRICULTURE, 7(2 (26)), 187-197. SID. https://sid.ir/paper/183874/en

Vancouver: Copy

MIRSHEKARI B.. COMPETITION EFFECTS OF LAMBS QUARTERS (CHENOPODIUM ALBUM) ON PHYSIOLOGICAL CHARACTERISTICS AND RAPESEED YIELD (BRASSICA NAPUS CV. HYOLLA 401). NEW FINDINGS IN AGRICULTURE[Internet]. 2013;7(2 (26)):187-197. Available from: https://sid.ir/paper/183874/en

IEEE: Copy

B. MIRSHEKARI, “COMPETITION EFFECTS OF LAMBS QUARTERS (CHENOPODIUM ALBUM) ON PHYSIOLOGICAL CHARACTERISTICS AND RAPESEED YIELD (BRASSICA NAPUS CV. HYOLLA 401),” NEW FINDINGS IN AGRICULTURE, vol. 7, no. 2 (26), pp. 187–197, 2013, [Online]. Available: https://sid.ir/paper/183874/en

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