园林早熟植物(Chamaesyce hirta)的田间化学防治

Naira Moreli de Freitas, E. A. Gheno, Celso Augusto Sato Teixeira, Luiz Augusto INOJOSA FERREIRA, Vanessa Vital Silva, Rubem Silvério de Oliveira Jr
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引用次数: 0

摘要

在巴西的生产地区,羚羊是一种麻烦的杂草;然而,人们对成虫的控制知之甚少。本研究在田间对成虫的防治效果进行了评价。实验安装在索里索- MT市COACEN,采用随机完全区组设计,有4个重复。处理按分割样地因子进行安排,其中样地在第一次施用后9天施用19种除草剂,次样地依次施用百草枯、草铵膦或不施用除草剂。分别于第一次给药后7、14、21和28天以及第二次给药后5、12和19天进行视觉控制评价。顺序施用提高了大多数处理的控制水平。单独施用草甘膦,不按顺序施用,对赤藓菌没有控制作用。在草甘膦+ 2,4- d混合物中加入氟苯那西,一次施用即可有效控制。草甘膦+ 2,4- d的混施比草甘膦+氯脲-乙基的防治效果更好,且与百草枯和草甘膦铵序施时,对赤藓成虫的防治效果更好。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
CHEMICAL CONTROL OF GARDEN SPURGE MATURE PLANTS (Chamaesyce hirta) IN THE FIELD
Chamaesyce hirta is a troublesome weed in producing regions of Brazil; however, little is knownabout the control of adult plants. We evaluated the control of adult Chamaesyce hirta plants in the field. Theexperiment was installed at COACEN, municipality of Sorriso - MT, in a randomized complete block design, withfour replicates. Treatments were arranged in a split plot factor, where plots received the application of 19 herbicidesin burndown and subplots received the sequential application of paraquat, glufosinate ammonium, or no herbicide,nine days after the first application. Visual control evaluations were performed at 7, 14, 21 and 28 days after thefirst application and at 5, 12 and 19 days after the second application. Sequential applications increased the levelof control of most treatments. Isolated glyphosate applications, without sequential application did not control C.hirta. The addition of saflufenacil to glyphosate + 2,4-D mixture provides effective control with a single application.The mixture of glyphosate + 2,4-D provided better control than glyphosate + chlorimuron-ethyl and was efficientin controlling adult C. hirta plants, when used with sequential application of paraquat and ammonium glufosinate.
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