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<title>Bioefficacy of imazethapyr on the predominant weeds in soybean</title>
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<meta name="Premium Series" content="Six predominant weed species were observed in experimental field during the rainy (kharif) season of 2008 and 2009, among them Echinochloa colona and Echinochloa crussgalli were grasses; Cyperusdiflormis was the sedge and the broad leaf weeds were Euphorbia hirta, Croton sparsiflorus, and Digera arvensis. Similar observation was also reported by Daset al., (1997) and Kumar et al., (200 l)." /> <link href="default.css" rel="stylesheet" type="text/css" media="screen" />
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<h1 align="center" class="title style5"><span class="style1">Volume 7 Issue 2</span></h1>
<h1 align="center" class="style22">Bioefficacy of imazethapyr on the predominant weeds in soybean<br />
<br />
</h1>
<p><span class="style21">Author(s):</span> <span class="style2">R. KUNDU, K. BRAHMA CHARI, P. S. BERA, C. K. KUNDU AND S. ROY CHOUDHURY</span><br />
<span class="style21">Abstract:</span> <span class="style3">A field experiment was undertaken to assess the bio-efficacy of imazethapyr against predominant weeds in soybean and the crop safety at different doses of imazethapyr. The predominant weed species in experimental field were Echinochloa colona (L.) Link, Echinochloa crussgalli (L.) Beauv, Cyperus difformis L., Euphorbia hirta L., Croton sparsiflorus Morong and Digera arvensis Forsk. The maximum suppression of all the weed density, weed biomass, and highest weed control efficiency vis-a-vis crop yield were obtained where twice hand weeding done at 20 and 40 days after sowing, and closely followed by the treatment with imazethapyr 150 g ha-1 and imazethapyr 125 g ha-1 respectively. Among the herbicidal treatment imazethapyr 150 g ha-1 recorded the highest herbicide efficiency index, but produced relatively lower yield than imazethapyr 125 g ha-1 and also showed delay maturity due to its phytotoxic effect on soybean, whereas weedy check treatment produced lowest yield of soybean among all the treatments.</span></p>
<p align="center"><img src="images/F38.1.jpg" alt="Fig: Effect of herbicide efficiency index (HEI) of different herbicide on soybean field at 15, 30 and 45 days after post emergence spray." width="442" height="242" border="1" /></p>
<p align="center" class="style3"><strong>Fig:</strong> Effect of herbicide efficiency index (HEI) of different herbicide on soybean field at 15, 30 and 45
days after post emergence spray.</p>
<p><span class="style22">Download Full Article </span><span class="style21">: </span><strong><a href="pdf/38.pdf" target="_blank">Click Here</a></strong></p>
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