Document Type : Research Paper
Authors
1
Assistant Professor of Plant Protection Research Department, Fars Agricultural and Natural Resources Research and Education Center, AREEO,, Darab, Iran
2
Department of Weed Research, Plant Pest and Disease Research Institute, AREEO, Tehran, Iran
3
Assistant Professor of Khorasan Razavi Agricultural and Natural Resources Research and Education Center (AREEO), Mashhad, Iran.
4
Assistant Professor of Agricultural and Natural Resources Research and Education Center of Semnan, Agricultural Research, Education and Extension Organization (AREEO), Shahrood, Iran
5
Associate Professor, Iranian Research Institute of Plant Protection, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran
Abstract
To study the effect of the pre-mix herbicide, clodinafop propargyl+ metribuzin (29% WP), to control weeds of wheat fields an experiment was carried out in a randomized complete block design with 8 treatments and 4 replications in Alborz (Karaj), Fars (Darab), Semnan (Shahroud), and Khorasan Razavi (Mashhad) during 2021-2022. The treatments included the application of the herbicides pre-mixture herbicide Clodinafop propargyl+ Metribuzin ("CloMetri" is used as an abbreviation) at the rates of 500, 600, and 700 g/ha, Metsulfuron methyl+ Sulfosulfuron (Total@, 80% WG) at the rate of 45 g/ha, Mesosulfuron+Iodosulfuron+ Diflufenican (Othello@, 8.25% OD) at the rate of 1.6 l/ha, Clodinafop propargyl (Tapik@, 8% EC)+ Tribenuron methyl (Geranestar@, 75% DF) at the rate of 0.8 l/ha + 20 g/ha, Tapik@ + Bromoxynil+ MCPA (Bromicide MA@, 40% EC) at the rate of 1 + 1.5 l/ha, , and a Weed-free (Hand-weeded) control. The results showed that the application of herbicide treatments significantly reduced weed density and dry weight and increased grain yield of wheat. The Clometri (700 g/ha) showed control efficacy against Veronica persica Poir., Malva neglecta Wallr., Hirschfeldia incana (L.) Lagr.-Foss., Fumaria officinalis L., and Centaurea iberica Trevir. ex Spreng., ranging from 70% to 85%. Overall, compared to the other herbicides in the experiment, the efficacy of clometry herbicide in controlling most weed species was weak and unsatisfactory. Therefore, its use is not recommended as an option for weed control in wheat fields.
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