Evaluation of the selective herbicides efficiency in transplanted sugar beet (Beta vulgaris L.) and determining the best time of their application

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Najafi H.; Hadizadeh M.H.; Vassi M.; Yosefabadi Valiollah

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Journal Paper

Paper Information

Journal: JOURNAL OF SUGAR BEET Year:2021 | Volume:38 | Issue:2 Page(s): 243-258

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Information Journal Paper

Title

Evaluation of the selective herbicides efficiency in transplanted sugar beet (Beta vulgaris L.) and determining the best time of their application

Author(s)

Najafi H. | Hadizadeh M.H. | Vassi M. | Yosefabadi Valiollah | Issue Writer Certificate

Keywords

chloridazon

Cycloate

Metamitron

Transplanting

trifluralin

weed

Abstract

In order to determine the effectiveness of selective herbicides for sugar beet and the best application time of them in transplanting sugar beet system, an experiment was conducted in two regions of Kermanshah and Mashhad in 2019 in randomized complete block design with 11 treatments and four replications. Experimental treatments included application of trifluralin at pre-transplanting, two and four leaf stages, phenmedipham+ desmedipham+ ethofumesat at four leaf stage, chloridazon after transplanting and before first irrigation at 2-4 leaf stage, cycloate before transplanting, cycloate and trifluralin before transplanting, metamitron immediately after transplanting, metamitron + phenmedipham after transplanting and at four leaf stage, and hand weeding. Results showed that application of metamitron (3 l ha-1 immediately after transplanting) and metamitron + phenmedipham (3+1.5 l ha-1 immediately after transplanting and at 4-leaf stage) could control more than 85% of weeds (90 and 88% in Kermanshah and 62 and 83% in Mashhad, respectively). The highest root yield of 84 t ha-1 for Kermanshah and 64 t ha-1 for Mashhad was obtained from metamitron (3 l ha-1 immediately after transplanting) and metamitron + phenmedipham (3+1.5 l ha-1 immediately after transplanting and at 4-leaf stage) treatments and for this reason, the use of these herbicides is recommended for optimal control of weeds in sugar beet planting.

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