用静电喷雾器喷洒草甘膦的效果受佐剂和载体体积的影响

IF 0.8 Q3 Agricultural and Biological Sciences Planta Daninha Pub Date : 2020-01-01 DOI:10.1590/s0100-83582020380100092
Saulo F. B. Campos, João P. A.R. Cunha, Heli H.T. Assunção, Thales C. Alves, César H.S. Zandonadi, Ernane M.Lemes
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引用次数: 1

摘要

背景:静电喷雾具有优化农药施用的潜力;然而,需要进一步的研究来验证其有效性。目的:评价不同载体体积下草甘膦和佐剂的静电施用体系对杂草的化学防治效果。方法:对喷雾溶液的理化性质、电荷/质量关系、喷雾在杂草上的沉积、对土壤的损失、防杂草效果和喷雾漂移进行评价。田间试验设计为随机分组,在2x2x2+2的阶乘中有4个重复:静电喷雾的存在与否;添加和不添加佐剂(大豆卵磷脂+丙酸);两个载体体积(50和90 L ha-1);一种是无应用的对照,另一种是常规喷雾量(150 L ha-1)。这项研究是重复进行的。结果:在草甘膦和佐剂的施用过程中,静电系统对液滴进行了通电;但是,这对杂草的沉积、土壤的损失和漂移没有影响。该助剂提高了各种情况下的除草效果,改变了喷雾溶液的性能,减少了因漂移造成的损失。结论:所使用的佐剂是应用技术的重要工具。除草效果一般不受静电系统的影响。
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Efficacy of glyphosate applied using an electrostatic sprayer as affected by adjuvant and carrier volumes
Background: The use of electrostatic spray has the potential to optimize pesticide applications; however, further studies are required to verify its effectiveness. Objective: The objective of this work was to evaluate the electrostatic application system for the chemical control of weeds with glyphosate and adjuvant in different carrier volumes. Methods: The physicochemical properties of the spray solution, charge/mass relations, spray deposition on weeds, losses to the soil, effectiveness of weed control, and spray drift were evaluated. The field experiment was designed to have randomized blocks with four replications in a 2x2x2+2 factorial: the presence or not of electrostatic spray; with and without adjuvant (soybean lecithin + propionic acid); two carrier volumes (50 and 90 L ha-1); a control without applications and a conventional spray rate (150 L ha-1) for additional treatments. The study was performed in duplicate. Results: The electrostatic system energized the droplets during the application of glyphosate and adjuvant; however, this did not influence the deposition on the weeds, the losses to the soil, and the drift. The adjuvant improved the effectiveness of weed control in various situations, changed the spray solution properties, and reduced the losses due to drift. Conclusions: The adjuvant used proved to be an important tool in application technology. The effectiveness of weed control, in general, was not influenced by the electrostatic system.
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来源期刊
Planta Daninha
Planta Daninha Agricultural and Biological Sciences-Plant Science
自引率
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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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