期刊名称：Current Journal of Applied Science and Technology
印刷版ISSN：2457-1024
出版年度：2019
卷号：33
期号：2
页码：1-8
DOI：10.9734/cjast/2019/v33i230059
语种：English
出版社：Sciencedomain International
摘要：A field experiment was conducted at Aurangabad district of Bihar during 2014-15 and 2015-16. The experiment was laid out in randomized block design with five replications and six treatments. The major weeds in experimental field were Chenopodium album, Phalaris minor, Anagalis arvensis and Convolvulus arvensis were recorded with some other minor weed species. Lowest weed density (4.90 m-2and6.20 m-2) at 30DAS was recorded where pendimethalin was applied @ 1.0 kg a.i./ha as PE followed by Imazethapyr @40 g a.i./ha at 25 DAS, which was statistically at par with Imazethapyr @40 g a.i./ha at 25 DAS in 2014-15 and 2015-16, respectively. Similarly weed density and dry weight at 30DAS and harvest during 2014-15 and 2015-16 were recorded significantly lower with pendimethalin was applied @ 1.0 kg a.i./ha as PE followed by Imazethapyr @40 g a.i./ha at 25 DAS, which was statistically at par with Imazethapyr @40 g a.i./ha at 25 DAS. Significantly decreased the weed density (38.77%and60.37%) at 30DAS with pendimethalin applied @ 1.0 kg a.i./ha as PE followed by Imazethapyr @40 g a.i./ha at 25 DAS, which was statistically at par with Imazethapyr @40 g a.i./ha at 25 DAS during 2014-15 and 2015-16 and similar finding was also recorded at harvest stage in both the year. Grain yield was recorded with pendimethalin was applied @ 1.0 kg a.i./ha as PE followed by Imazethapyr @40 g a.i./ha at 25 DAS 17.61 q/ha and 14.61 q/ha, respectively during 2014-15 and 2015-16 being at par with Imazethapyr @40 g a.i./ha during both the year among other treatments. The highest net returns of Rs. 61925andRs 67140 and B:C 4.57and4.27 were recorded by pendimethalin was applied @ 1.0 kg a.i./ha as PE followed by Imazethapyr @40 g a.i./ha at 25 DAS being on par with Imazethapyr @40 g a.i./ha during both the year.
关键词：Weed control;lentil;economics;pendimethalin and imazethapyr
