Vol. 10, Issue 11 (2021)

Author(s):
Sunil Kumar, Vivak Ujjwal, Arvind Malik, Uzma Khan and Ravi Kumar

Abstract:
Weeds are the cause of serious concern on yield reduction in rice production worldwide, depending on the predominant weed flora and on the control methods practiced by farmers. Keeping view in mind a field trial was conducted during kharif season 2021 on sandy loam soil to study weed and crop performance as influenced by different herbicides in transplanted basmati rice at research station Galgotias University Greater Noida, Uttar Pradesh. The experiment was conducted in R.B.D with three replications comprising 10 treatments of weed management. The results indicated that chemical methods of weed control reduced the \ weed population and weed dry weight, while increased weed control efficiency over weedy check. The highest number of tillers at harvest, filled grains panicle-1, unfilled grains panicle-1, grain yield, biological yield and harvest index were recorded with the application of Pretilachlor @ 750 g a.i./ha, which showed its superiority over rest of the herbicides in puddled and unpuddled conditions. The nitrogen, phosphorous and potassium content and uptake in grain and straw by rice crop was also highest under Pretilachlor @ 750 g a.i./ha in puddled and unpuddled conditions. Besides it had highest net return and B: C ratio was obtained under the treatment receiving Pretilachlor @ 750 g a.i./ha in puddled and unpuddled conditions, respectively. Thus, application of Pretilachlor @ 750 g a.i./ha proved better to obtained higher yield and also fetches more profit, besides suppressing weed in transplanted basmati rice.