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首页> 外文期刊>Indian Journal of Weed Science >Bio-efficacy of different rates of acetachlor and alachlor for weed control in soybean [(Glycine max (L.) Merrill]
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Bio-efficacy of different rates of acetachlor and alachlor for weed control in soybean [(Glycine max (L.) Merrill]

机译：乙草胺和甲草胺的不同比例对大豆杂草控制的生物功效[（Glycine max（L.）Merrill]

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摘要

The studies on bio-efficacy of acetachlor and alachlor at different rates for weed control in soybean made during kharif 1996 and 1997 revealed that acetachlor @ 0.9, 1.35, 1.8 and 3.6 kg/ha and alachlor @ 2.0, 2.5 and 5.0 kg/ha were effective to control Echinochloa crusgalli and the efficacy increased with the increase in the rates of application. The broadleaf weeds were also controlled; however, the efficacy against Commelina communis and Phyllanthus niruri was relatively less. Trifluralin @ 1 kg/ha failed to control Commelina communis and Cyanotis axillaris, while metolachlor @ 1 kg/ha reduced the population of most of the dominant weed species except Rotalla sp. and Phyllanthus niruri. Acetachlor @ 3.6 kg/ha delayed the germination of soybean by 3-4 days and mortality of seedlings was also observed. The other rates of acetachlor and alachlor did not show adverse effects on germination and plant growth. All the herbicidal treatments gave significantly higher seed yield than weedy control. On the basis of two years' mean, the seed yield amongst acetachlor treatments varied from 1347-1417 kg/ha, white it was 1309-1403 kg/ha under alachlor treatments and all these treatments yielded at par with metolachlor (1478 kg/ha) and trifluralin (1391 kg/ha) as against 969 kg/ha in weedy control. The herbicidal treatments produced 35.1-52.2 percent increased seed yield over weedy control.
机译：在1996年和1997年的Kharif期间对不同浓度的乙草胺和甲草胺进行大豆杂草控制的生物有效性研究表明，乙草胺@ 0.9、1.35、1.8和3.6 kg / ha和甲草胺@ 2.0、2.5和5.0 kg / ha可以有效地控制chin草，并且随着施用量的增加其功效也随之增加。阔叶杂草也得到了控制。但是，对Commelina communis和Phyllanthus niruri的疗效相对较低。 Trifluralin @ 1 kg / ha不能控制Commelina communis和Cyanotis axillaris，而异丙甲草胺@ 1 kg / ha减少了除Rotalla sp以外的大多数优势杂草的种群。和Phyllanthus niruri。乙草胺@ 3.6 kg / ha将大豆发芽延迟3-4天，还观察到了幼苗的死亡率。乙草胺和甲草胺的其他比率对发芽和植物生长没有不利影响。与除草剂相比，所有除草处理均能显着提高种子产量。以两年的平均值计算，乙草胺处理的种子产量为1347-1417 kg / ha，白草胺处理的种子产量为1309-1403 kg / ha，所有这些处理的产量均与异丙甲草胺（1478 kg / ha）相当。 ）和三氟拉林（1391 kg / ha），而杂草控制为969 kg / ha。除草处理使种子产量比杂草控制提高了35.1-52.2％。

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