Wilson R. Cerveira Jr., Adilson F. Silva, João H.C. Cervoni, C. Cruz, Robinson A. Pitelli
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引用次数: 0
Abstract
Background: Knowledge about the action of glyphosate alone and associated with adjuvants in the effectiveness to control aquatic plants is important in the decision-making on its use. Objective: This study aimed to evaluate the effectiveness of glyphosate and five adjuvants in the control of Myriophyllum aquaticum. Methods: Glyphosate (Rodeo®) at doses of 1.5, 3.5, 5.5, and 7.5 L ha-1 was sprayed alone and associated with Aterbane® BR, Veget’oil®, Dash® HC, Assist®, and Agral® (0.5% v v-1), in addition to the control, with a spray solution volume of 200 L ha-1. The effectiveness of control was evaluated using the scores of a visual scale at 3, 7, 15, 21, 30, 45, and 60 days after application (DAA), regrowth, and dry matter accumulation at 60 DAA. Results: The best effectiveness of control of the glyphosate alone was 85% at the dose of 7.5 L ha-1, increasing to 100% when associated with Aterbane® and Veget’oil®. The control reached 100% for all glyphosate doses associated with Dash®. Moreover, glyphosate at the dose of 7.5 L ha-1 associated with Assist® provided a 98% control, while glyphosate doses of 3.5, 5.5, and 7.5 L ha-1 associated with Agral® provided a 100% control. Glyphosate at doses of 5.5 and 7.5 L ha-1 associated with Dash® and Agral® was more effective in reducing the regrowth and dry biomass (100%). Thus, glyphosate + Dash® and Agral® promoted the highest control (above 95%), the lowest regrowth, and the highest reduction in the dry biomass of M. aquaticum. Conclusions: The addition of Aterbane® BR, Dash®, and Agral® to glyphosate improved the effectiveness of control of M. aquaticum and contributed to reducing the applied herbicide dose.
背景:了解草甘膦单独使用及其伴随佐剂对水生植物控制效果的作用对其使用决策具有重要意义。目的:评价草甘膦和5种佐剂防治水藻的效果。方法:单独喷施1.5、3.5、5.5、7.5 L ha-1剂量的草甘膦(Rodeo®),除对照外,与Aterbane®BR、Veget 'oil®、Dash®HC、Assist®和Agral®(0.5% v v-1)联合喷施,喷液量为200 L ha-1。采用施药后3、7、15、21、30、45和60天(DAA)的视觉评分,以及60天(DAA)的再生和干物质积累来评估控制效果。结果:草甘膦单用7.5 L ha-1时防治效果最佳,为85%,联用阿特尔贝恩®和植物油®时防治效果可达100%。与Dash®相关的所有草甘膦剂量的对照均达到100%。此外,与Assist®相关的7.5 L ha-1剂量的草甘膦提供了98%的对照,而与Agral®相关的3.5、5.5和7.5 L ha-1剂量的草甘膦提供了100%的对照。与Dash®和Agral®相关的5.5和7.5 L ha-1剂量的草甘膦在减少再生和干生物量方面更有效(100%)。由此可见,草甘膦+ Dash®和Agral®对水草的防治效果最高(95%以上),再生效果最低,对水草干生物量的减少效果最大。结论:在草甘膦中添加Aterbane®BR、Dash®和Agral®,可提高水草小蠊的防治效果,减少除草剂用量。
Planta DaninhaAgricultural 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.