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首页> 外文期刊>Indian Journal of Weed Science >Relative density of weeds and weed indices as influenced by weed controloptions in cotton
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Relative density of weeds and weed indices as influenced by weed controloptions in cotton

机译：受棉布杂草ControlOptions影响的杂草和杂草指数的相对密度

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摘要

Field experiments were conducted at Professor Jayashankar Telangana State Agricultural University, Rajendranagar during Kharif 2017 for the evaluation of efficacy different doses of diuron in both red and black soils. The treatment consisted of test herbicides such as, diuron 80% WP at 0.5 kg/ha, 0.75 kg/ha and 1.0 kg/ha along with registered formulation of pendimethalin 38.7% CS at 677 g/ ha, intercropping with green manure crop, mechanical weeding thrice at 20, 40, 60 DAS and unweeded control. Theexperiment was laid out in a randomised block design replicated thrice. The weed flora of the experimental field in red soil was dominated by Cynodon dactylon, Rottboellia exaltata, Parthenium hysterophorus, Trianthema portulacastrum and Commelina benghalensis. While in case of black soil, predominant flora was Cynodon dactylon, Cyperus rotundus, Parthenium hysterophorus, Euphorbia geniculata, Tridax procumbens, Cyanotis cristata, Digera arvensis and Celosia argentia. The treatments, mechanical weedingthrice at 20, 40 and 60 DAS, polymulch treatments reduced the weed growth in both red and black soils. Among the herbicides, diuron at 1.0 kg/ha fb pyrithiobac-sodium + quizalofop-ethyl in red soil and both diuron at 1.0 kg/ha and 0.75 kg/ha along with sequential application of herbicides reduced the density of weeds. Diuron could reduce the broad-leaved weeds and grasses except itch grass. Sedges are also could not be reduced by diuron. The lower values of weed persistence index was obtained with herbicidal treatments i.e., diuron at 1.0 and 0.75 kg/ha fb pyrithiobac-sodium + quizalofop-ethyl. The crop resistance index and treatment efficiency index were superior in case of polymulch and mechanical weeding thrice at 20, 40 and 60 DAS.
机译：现场实验是在Jayashant Telangana州农业大学教授进行的，在Kharif 2017期间rajendranagar进行了评估，用于评估红色和黑色土壤中的疗效不同剂量的利尿剂。该处理包括试验除草剂，例如Diuron 80％WP，0.5kg / ha，0.75kg / ha和1.0kg / ha，与677 g / ha的Pendimethalin 38.7％cs的注册配方一起，用绿色粪便作物，机械。在20,40,60 das和无用的控制中的杂草三次。 ThePeriment在随机块设计中被编写了分类的三次。红土的实验领域的杂草属植物由Cynodon Daytylon，Rottboellia Extata，占山脊孢子，TrianThema Portulacastum和Commelina Benghalensis的占主导地位。虽然在黑土的情况下，主要的植物群是Cynodon Dactylon，Cypetus圈子，余宿参，大戟属Geniculata，Tridax Procumbens，Cyanotis Cristata，Digera arvensis和CeloSia阿根廷。该处理，机械杂草在20,40和60das，聚硫处理中减少了红色和黑色土壤中的杂草生长。在除草剂中，红壤中1.0kg / ha Fb Pyrithiobac-sodium + Quizalofop-乙基中的Diuron和1.0kg / ha的Diuron和0.75kg / ha以及连续施用除草剂，降低了杂草的密度。除了痒草外，Diuron可以减少阔叶杂草和草。 Diuron也不能降低淀粉。利用除草处理获得的杂草持久性指数的较低值，I.，Diuron，1.0和0.75kg / ha Fb pyrithiobac-钠+ Quizalofop-乙基。在聚合物的情况下，作物抗性指数和治疗效率指数在20,40和60das的含量下的机械杂草。

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  • 来源
    《Indian Journal of Weed Science》 |2019年第1期|共6页
  • 作者

    N. Varsha; M. Madhavi; T. Ramprakash;

  • 作者单位

    Department of Agronomy College of Agriculture Prof. Jayashankar Telangana State Agriculture University Rajendranagar Hyderabad Telangana 030;

    Department of Agronomy College of Agriculture Prof. Jayashankar Telangana State Agriculture University Rajendranagar Hyderabad Telangana 030;

    Department of Agronomy College of Agriculture Prof. Jayashankar Telangana State Agriculture University Rajendranagar Hyderabad Telangana 030;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 植物保护;
  • 关键词

    Diuron; Polymulch; Weed control; Phytotoxicity;

    机译：Diuron;聚合物;杂草控制;植物毒性;

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