Document Type : Research Article
Authors
1
مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی، بخش گیاهپزشکی، رسول فخاری
2
Weed Research Dep., Iranian Research Institute of Plant Protection, AREEO,Tehran, Iran
3
Plant Protection Research Department, Agricultural and Natural Research Resource and Education Center of Khorasan-Razavi, AREEO, Mashhad, Iran
4
Plant Protection Research Dep., Agricultural and Natural Research Resource and Education Center of Khuzestan- AREEO, Dezful, Iran
10.22034/ijws.2026.371227.1505
Abstract
a field experiment was conducted during the 2023–2024 cropping season. The study was arranged in a randomized complete block design with twelve treatments and four replications at the Agricultural and Natural Resources Research Centers of Karaj, Moghan, Mashhad, and Dezful. Treatments consisted of: (1–3) dicamba + prosulfuron (Casper 55% WG) at 300, 350, and 400 g ha⁻¹; (4–7) bentazon (Basagran 87% SG) at 600, 700, 900, and 1100 g ha⁻¹; (8) bromoxynil + 2,4-D (Buctril Universal 56% EC) at 1.5 L ha⁻¹; (9) Basagran + dichlorprop (Basagran-DP 56.6% SL) at 2 L ha⁻¹; (10) dicamba + triasulfuron (Lintur 70% WG) at 165 g ha⁻¹; (11) bromoxynil + MCPA (Bromicide 40% EC) at 1.5 L ha⁻¹; and (12) weed-free check throughout the growing season. Results revealed that Casper reduced the dry weight of dominant weeds by 86–98% in Karaj, 80–94% in Moghan, 91–100% in Mashhad, and 82–94% in Dezful. Similarly, bentazon SG reduced weed biomass by 76–91%, 84–100%, 81–98%, and 81–97% in the respective locations. Among the reference herbicides, Lintur exhibited the lowest efficacy (84%), while Buctril Universal showed the highest (above 92%). Mean comparison indicated that bentazon SG applied at 600, 700, 900, and 1100 g ha⁻¹ increased wheat grain yield by 23%, 28%, 31%, and 36%, respectively, compared with the untreated control. Likewise, Casper at 300, 350, and 400 g ha⁻¹ enhanced yield by 21%, 30%, and 35%, respectively.
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