عنوان مقاله [English]
In order to evaluate the efficacy of Isoxaflutole (SC480) on weed control in Chickpea (Cicer arietinum L.) fields, experiments were carried out in Kermanshah, Kurdestan and Lorestan provinces in a randomized complete block design with four replications. Treatments consisted of applications of pre-emergence isoxaflutole (SC480) at 0.2, 0.3 and 0.4 L.ha-1 of commercial formulation, post-emegence isoxaflutole at 0.2, 0.3 and 0.4 L.ha-1 of commercial formulation, post-emergence pyridate (EC60%) at 2 L.ha-1 of commercial formulation and hand weeding. Weed percent damage based on EWRC scores at 30 days after post spraying, weed density reduction (%), weed biomass reduction (%) were measured. According to the results, the best treatments in Kermanshah for grain yield of chickpea were pre-emergence isoxaflutole at rates 0.2 and 0.3 L.ha-1 with 669 and 632.5 kg ha-1 that reduced weed density %79 and %80.5 respectively. In Kurdestan, pre-emergence isoxaflutole at rate 0.2 L.ha-1 was considered as the most suitable treatment with 80% reduction in weed density and 1118 kg ha-1 grain yield. In Lorestan, pre-emergence isoxaflutole at rate 0.2 and 0.3 L.ha-1 reduced weed population at 89.5% and 91.5% respectively. The highest grain yield in Lorestan belonged to pre-emergence isoxaflutole at rates 0.2 and 0.3 L.ha-1 at 742 and 812.5 kg.ha-1.According to the results in the three locations, application of pre- emergence isoxaflutole at rate 0.2 L.ha-1 of commercial formulationis suitable for weed control in spring chickpea.
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