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Optimizing Soybean (Glycine max L.) Performance Using Selective Herbicides: A Field Study in Ardabil and Mazandaran
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Karim Mousavi *   , Rasoul Fakhari , Parviz Sharifi , Morteza Nouralizade , Mohammad Ahmadi |
| Iranian Research Institute of Plant Protection |
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Abstract: (131 Views) |
The chemical control of narrow-leaved weeds, particularly barnyardgrass (Echinochloa crus-galli) and johnsongrass (Sorghum halepense), is a major challenge in soybean cultivation. This study aimed to compare the efficacy of various herbicides based on clethodim and other competitor compounds in controlling these weeds and increasing soybean (Glycine max) yield in two regions: Ardabil and Mazandaran. The experiment was conducted as a randomized complete block design with 13 treatments in 2017 in both Mazandaran and Ardabil provinces. The treatments included different herbicide formulations (Selective, Superpower, Select-Super, Gallant Super, Nabuas, Focus, Pantera) at recommended doses, along with a hand-weeded control treatment. In Mazandaran province, the effect of the herbicide Tornado was also investigated as a fourteenth treatment. The control percentage was evaluated based on the reduction in weed density and biomass. In Mazandaran, the treatments Selective (1 L/ha), Tornado (0.75 L/ha), Superpower (0.6 L/ha), and Pantera (1.5 L/ha) demonstrated efficacy equivalent to the hand-weeded control, reducing weed biomass by 89%, 88%, 88%, and 82%, respectively. In Ardabil, the treatments Selective (1.2 L/ha) and Superpower (0.5 and 0.6 L/ha) achieved complete control of barnyardgrass. Furthermore, Superpower (0.6 L/ha) and Selective (1 L/ha) reduced the density of johnsongrass by 93% and 84%, respectively. The greatest reduction in total weed biomass was related to the Superpower (0.6 L/ha) and Selective (1.2 L/ha) treatments, with 91% and 89% reduction, respectively. Based on the findings of this research, the post-emergence application of Superpower (0.6 L/ha), Selective (1 L/ha), Tornado (0.75 L/ha), and Pantera (1.5 L/ha) is recommended for effective and economical control of narrow-leaved weeds in soybean fields.
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| Keywords: Biomass, Superpower, Soybean, Herbicide, Gallant Super |
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Full-Text [PDF 820 kb]
(73 Downloads)
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Type of Study: Research |
Subject:
Abiotic Stresses
Received: 2025/09/15 | Accepted: 2025/12/31 | Published: 2025/12/31
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