EFFICIENCY OF ATRAZINE FOR WEED CONTROL IN GRAIN SORGHUM
DOI:
https://doi.org/10.32404/rean.v13i1.9591Keywords:
Sorghum bicolor, Herbicide, Mortality, Invasive plantsAbstract
Sorghum is an important crop due to its resilience; however, the presence of weeds in cultivation areas can affect yield. This study aimed to evaluate the efficacy of atrazine for controlling weeds in sorghum (Sorghum bicolor) crops. The experiment was conducted at the State University of Mato Grosso do Sul, in Cassilândia. Three weed species, Synedrellopsis grisebachii, Commelina benghalensis, and Digitaria insularis, were considered to evaluate the effectiveness of atrazine control. The visual method was used to evaluate herbicide control, with scores ranging from 0% to 100% at 7, 14, and 21 days after spraying. At 7 days after application of the products, there was no significant difference for C. benghalensis and S. grisebachii. At 14 DAA, S. grisebachii showed high control, thereby significantly differentiating it from the other species. There was no significant difference in the control of S. grisebachii and C. benghalensis at 21 DAA. The results showed that atrazine is ineffective at controlling D. insularis. According to the vegetation cover treatments, none of the treatments differed significantly from each other. Atrazine provided 83% control of S. grisebachii after 21 days. It was observed that millet straw cover provided greater weed control, leading to better weed management and reduced product leaching. There was no satisfactory control for the other species studied.
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