Vol. 11, Issue 2 (2022)

Author(s):
Rajeev Bharat, Meenakshi Gupta, BR Bazaya and Rahul Gupta

Abstract:
A field experiment was conducted at the Oilseed Research farm, Chatha, Jammu during the rabi season of 2011-12 and 2012-13. The experiment consisted of ten treatments initially which were arranged in randomized block design with three replications. The experiment consisted of nine treatments in the first year namely Oxidiargyl @ 0.75 kg/ha PE (T1), Trifluralin @ 0.75 kg/ha (as Pre plant incorporation-PPI) (T2), Oxyfluorfen @ 0.15 kg/ha PE (T3), Post Emergence application of Quizalofop @ 0.06 kg/ha Post Em. (T4), Post Emergence application of Clodinafop @ 0.06 kg/ha (T5), Isoproturon @ 1.0 kg/ha as PE (T6), Isoproturon @ 1.0 kg/ha as Post emergence (T7), Pendimethalin @ 1.0 kg/ha Pre-emergence (T8), Weedy check (T9) and Weed free (T10) plots. The maximum seed yield (1531.48 and 1599.33 kg/ha) and yield attributes viz. Siliquae per plant, Seeds per Siliquae, 1000-Seed weight and harvest index were recorded in weed free plots. However, among the different weed control treatments, pre emergence application of Oxyfluorfen @ 0.15 kg/ha (PE) though being at par with Pendimethalin @ 1.0 kg/ha reduced the total weed population and higher weed control efficiency with subsequent increase in seed yield and yield attributes if Indian mustard crop than weedy check and other treatments in comparison. However, maximum B:C ratio was observed with pre emergence application of Oxyfluorfen @ 0.15 kg/ha (1.54 and 1.62) during both the years of experimentation and hence may be recommended for weed control in Indian mustard crop.