Dynamics of diuron and sulfentrazone formulations in soils with different textures

IF 0.8 Q3 Agricultural and Biological Sciences
Ana K. A. Matos, C. A. Carbonari, Ivana P. F.S. Brito, Giovanna L.G.C. Gomes, Maria L. B. Trindade, Edivaldo D. Velini
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引用次数: 1

Abstract

Background: The use of commercial mix and tank mix with two or more herbicides is a widespread practice. However, despite its several possible benefits, little is known about its effect on the behavior of the molecules in the soil, which can increase or reduce the leaching potential of these molecules. Objective: This study evaluated the leaching potential of the herbicides diuron and sulfentrazone applied, using commercial mix and tank mix, in soils with different textures. Methods: The herbicides diuron (1,750 g ha-1) and sulfentrazone (875 g ha-1) were applied in three soils with different textures (clayey, medium, and sandy), using a commercial mix (Stone®) and a tank mix (Herburon 500 BR + Boral®). Subsequently, the treated soils were reconstituted in soil columns subjected to rainfall simulations with accumulated rainfall volumes of 40, 80, and 120 mm; the leached solutions were collected and analyzed by LC-MS/MS. Results: The results indicated a low descending movement of diuron in the three soils evaluated, when applied using commercial and tank mixes with sulfentrazone. Higher rainfall volumes (80 and 120 mm) were required to increase the diuron movement (≈20% of diuron applied). Sulfentrazone showed a high leaching potential in the soils, whereas the tank mix increased the leaching potential in sandy soil with the rainfall depths of 80 and 120 mm. Conclusions: The formulations did not affect the leaching potential of the herbicides in clayey and medium soil. However, the tank mix promoted greater leaching of the herbicides in the sandy soil when compared to the commercial mix.
不同质地土壤中迪乌隆和磺胺酮配方的动态变化
背景:使用两种或两种以上除草剂的商业混合剂和罐式混合剂是一种广泛的做法。然而,尽管它有一些可能的好处,但人们对它对土壤中分子行为的影响知之甚少,这可能会增加或减少这些分子的浸出潜力。目的:评价商品混料和罐式混料在不同质地土壤中的淋溶潜力。方法:将除草剂双脲(1750 g ha-1)和磺胺酮(875 g ha-1)分别施用于3种不同质地的土壤(粘土、中等和沙质),使用商业混合剂(Stone®)和罐混合剂(Herburon 500 BR + Boral®)。随后,将处理后的土壤重构成土壤柱,进行了累积降雨量为40、80和120 mm的降雨模拟;收集浸出液,采用LC-MS/MS进行分析。结果:结果表明,当与磺胺酮混合使用商业和储罐时,在三种土壤中,迪乌隆的下降运动很低。需要更高的降雨量(80和120毫米)来增加迪乌隆的移动(≈施用量的20%)。磺胺酮在土壤中表现出较高的淋溶潜力,而在降雨深度为80和120 mm的沙质土壤中,罐混合则增加了淋溶潜力。结论:制剂对该除草剂在粘土和中土中的淋溶电位无影响。然而,与商业混合相比,罐混合促进了更多的除草剂在沙土中的浸出。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Planta Daninha
Planta Daninha Agricultural and Biological Sciences-Plant Science
自引率
0.00%
发文量
0
审稿时长
16 weeks
期刊介绍: Planta Daninha is a scientific journal published by the Brazilian Society of Weed Science (SBCPD - Sociedade Brasileira da Ciência das Plantas Daninhas). Papers submitted for publication must be sent through an electronic system, on http://www.scielo.br/pd. Works may be written in Portuguese, English, or Spanish, and will be accepted after being reviewed and approved by the Editorial Board. Only papers that have not been published or submitted for publication in other media will be accepted. Articles in Portuguese will be translated to English after being properly corrected and authorized by the authors. Planta Daninha has with goal to publish genuine technical-scientific papers and literature reviews from a critical perspective on Biology, weed management, and related topics.
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