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首页> 外文期刊>Indian Journal of Weed Science >Efficacy of pre- and post-emergence herbicides for weed control in greengram
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Efficacy of pre- and post-emergence herbicides for weed control in greengram

机译：芽后除草剂在绿色镜头中杂草控制的疗效

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摘要

A field experiment was conducted during rainy seasons in 2011 and 2012 to study the efficacy of pre- and post-emergence herbicides on weeds, growth, symbiotic traits and grain yield of greengram. Pre-emergence application of pre-mix pcndimethalin + imazethapyr at 1.0 kg/ha showed lowest weed index and highest weed control efficiency, followed by pre-mix pendimethalin + imazethapyr at 0.75 kg/ha and two hand weedings done at 20 and 40 days after sowing. Post-emergence application of quizalofop-ethyl at 37.5 g/ha reduced the number and dry weight of nodules/plant compared to other herbicides. Weed free treatment provided the highest grain yield, gross returns and net returns. Among the herbicides, pre-emergence application of pre-mix pendimethalin + imazethapyr at 1.0 and 0.75 kg/ha recorded higher grain yield (1.41 and 1.31 t/ha, respectively) and provided higher net returns (IR/s 52970 and IR/s 48390, respectively) and B:C ratio (2.57 and 2.44, respectively) than the other treatments of herbicidesdue to significant reduction in the dry weight of weeds and higher weed control efficiency and consequently improving the yield attributing parameters.
机译：2011年和2012年在雨季进行了一个田间实验，研究了出苗后除草剂对杂草，生长，共生性状和绿色谷物产量的疗效。预先出现的PCNDimethalin +咪唑普罗拉姆+咪唑/公顷显示出最低的杂草指数和最高的杂草控制效率，其次是预混合的pendimethalin +咪唑+咪唑+咪唑，在0.75kg / ha，两只手杂草在20和40天后完成播种。与其他除草剂相比，37.5g / ha的乳腺戊戊乙烯 - 乙基的出苗后施用降低了结节/植物的数量和干重。杂草免费治疗提供了最高的谷物产量，总回报和净回报。在除草剂中，预先施用前的pendimethalin +咪唑蛋白在1.0和0.75kg / ha的施加较高的谷物产率（分别为1.41和1.31 t / ha）并提供更高的净返回（Ir / s 52970和Ir / s） 48390分别分别为B：C比（2.57和2.44）比除草剂的其他处理分别为杂草的干重和更高的杂草控制效率的显着降低，从而提高产量归因于参数。

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