Chemical weed control in dryland and irrigated chickpea

被引:13
作者
Lyon, DJ [1 ]
Wilson, RG [1 ]
机构
[1] Univ Nebraska, Panhandle Res & Extens Ctr, Scottsbluff, NE 69361 USA
关键词
herbicides; garbanzo bean; kabuli chickpea;
D O I
10.1614/WT-05-013R.1
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Field studies were conducted in 2003 and 2004 near Scottsbluff and Sidney, NE, to identify efficacious chemical weed-control options for irrigated and dryland chickpea production. Weed control had a greater relative effect on chickpea yield in the irrigated system than the dryland system, with yield from the hand-weeded check exceeding the nontreated check by 1,500% in the irrigated system and 87% in the dryland system. Imazethapyr, applied preemergence at the rate of 0.053 kg ai/ha, reduced plant height, delayed plant maturity, and caused leaf chlorosis. At Scottsbluff, preplant-incorporated ethalfluralin caused significant crop injury in 2003, but the ethalfluralin treatment also maintained weed densities 4 wk after crop emergence that were not significantly different than the hand-weeded check at both locations in 2003 and 2004. Treatments containing sulfentrazone provided a similar level of weed control but without any evidence of crop injury. Pendimethalin and pendimethalin + dimethenamid-P applied preemergence provided acceptable weed control in the irrigated system, where water was applied within 4 d after herbicide application, but did not provide acceptable control in the dryland system.
引用
收藏
页码:959 / 965
页数:7
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