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首页> 外文期刊>Indian Journal of Weed Science >Pre- and post-emergence herbicides effect on growth, nodulation andproductivity of greengram
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Pre- and post-emergence herbicides effect on growth, nodulation andproductivity of greengram

机译：出苗后除草剂对生长，染色曲线的生长影响

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摘要

A field experiment was conducted during Kharif season to study the efficacy of different pre- and post-emergence herbicides for weed management in greengram. Pre-emergence (PE) application of pendimethalin + imazethapyr at 0.75 kg/ha (pre-mix) effectively reduced both the density and dry matter of weeds whereas post-emergence (PoE) application of imazethapyr 10 SL at 55 g/ha significantly reduced Cyperns rotiindns. All the PE and PoE herbicides significantly reduced the dry weight of weeds at 30 and60 days after sowing (DAS) as compared to weedy check. The highest weed control efficiency was recorded in two hand weeding (90.2%), and was followed by pendimethalin + imazethapyr (pre-mix) 0.75 kg/ha applied as PE (86.8%). PoE herbicides (imazethapyr,imazamox+ imazethapyr and clodinafop-propargyl + aciflourfen-sodium) not only suppressed the crop growth, but also exhibited antagonistic effect on root nodulation. Significantly higher seed yields were recorded under two hand weeding and pendimethalin +imazethapyr at 0.75 kg/ha (PE). Two hand weeding also recorded the highest gross and net returns, and was followed by pendimethalin + imazethapyr (pre-mix) at 0.75 kg/ha (PE). Application of pendimethalin + imazethapyr at 0.75 kg/ha (PE) also gave the highest B:C ratio, and it was followed by two hand weeding. All the PoE herbicides fetched comparatively lower returns and B:C ratio.
机译：在Kharif季节进行了一个田间实验，研究了在绿地中杂草管理的不同预期和出苗后除草剂的疗效。前嗜哪种（PE）Pendimethalin +咪唑吡喃（PE）施用0.75kg / ha（预混合）有效地降低了杂草的密度和干物质，而初始（PoE）在55g / ha下的咪唑普罗斯10 sl的应用显着降低Cyperns Rotiindns。与Weedy Check相比，所有PE和PoE除草剂在播种（DAS）后30岁和60天显着降低了杂草的干重。杂草的最高控制效率被记录在两只手中（90.2％），然后是PENDIMETHALIN +咪唑（预混合）0.75kg / ha施用为PE（86.8％）。 Poe除草剂（咪唑哌啶，咪唑嗪+咪唑普拉替昔替尼丙基丙基丙基丙基钠）不仅抑制了作物生长，而且还表现出对根瘤瘤的拮抗作用。在两只手除山和Pendimethalin +咪唑+咪唑+下在0.75kg / ha（pe）下记录显着较高的种子产量。两只手除草还记录了最高的总粗糙和净返回，然后是Pendimethalin +咪唑（预混合），0.75kg / ha（pe）。 Pendimethalin +咪唑吡喃吡喃（PE）的施用也得到了最高的B：C比，然后是两只手除草。所有PoE除草剂都归因于较低的回报和B：C比率。

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