Vol. 12, Issue 10 (2023)

Author(s):
Meeta Kumari, RP Manjhi, Jaya Bharti, Satish Kumar Pandey, Pallavi Bharti, Juhi Tiwari and Chitrotpala Dehury

Abstract:
The experiment was comprising of 12 weed management practices with different herbicidal doses and inter-culture practices was conducted on sandy loam textured soil during Kharif season of 2018 at the Agronomical Research Farm of BAU, Ranchi, with the objectives to find out the effect of integrated weed management practices on weed dynamics, growth, yield and economics of direct seeded rice.The relative composition of grassy, broad-leaf and sedges accounted for 37.36%, 20.39% and 42.24%, respectively. Irrespective of weed management practices, total density (30 and 60 DAS), total dry weight of weeds (30 and 60 DAS) and weed control efficiency were higher in 3 Hand weeding which was on par with Pretilachlor @ 1.00 kg a.i /ha (PE) fb Bispyribac Sodium @ 0.025 kg a.i/ha PoE 20 DAS, were being at par with Pendimethalin @ 0.75 kg a.i /ha (PE) fb Bispyribac Sodium @ 0.025 kg a.i/ha PoE 20 DAS over weedy check. Grain and straw yield (41.70 and 61.30 q/ha, respectively) were significantly higher with 3 Hand weeding as compared to weedy check. However, the net return (Rs 61,864 per ha) were significantly higher with pre-emergence application of Pretilachlor @ 1.00 kg a.i /ha (PE) fb Bispyribac Sodium @ 0.025 kg a.i/ha PoE 20 DAS which was on par with 3 Hand weeding (Rs 53,541 per ha) but highest B:C ratio was obtained from the application of pre-emergence application of Pretilachlor @ 1.00 kg a.i /ha (PE) fb Bispyribac Sodium @ 0.025 kg a.i/ha PoE 20 DAS.