Effect of weed management practices on quality, weed count, weed dry matter and weed control efficiency in linseed

Abstract

An experiment was conducted during Rabi 2018-19 and 2019-20 at Research Farm of Birsa Agricultural University, Kanke, Ranchi, Jhrakhand to study the “Effect of weed management practices on quality, weed count, weed dry matter and weed control efficiency in linseed”. The treatments replicated thrice and comprised of weed management practices viz., T1 -Weedy Check, T2 -Hand weeding twice at 30 and 60 DAS, T3 -Metribuzin 250 g/ha + Oxyflourfen 125g/ha (Pre.), T4 -Pendimethalin 1 kg/ha (Pre.) fb. metsulfuron methyl 4 g/ha (Post.), T5 -Imazethapyr 75 g/ha (Post.), T6 -Oxyflourfen 125 g/ha (Pre.), T7 -Metsulfuron methyl 4 g/ha (Post.), T8 -Clodinafop 60 g/ha (Post.), T9 -Clodinafop 60 g/ha + metsulfuron methyl 4 g/ha (Post.) and T10-Oxadiargyl 80 g/ha (Pre.). Application of Hand Weeding twice at 30 and 60 DAS was found superior in terms of oil content (38.91%) and oil yield (586.80 kg/ha) in pooled data. Also, analysis of pooled data revealed that Hand Weeding Twice at 30 and 60 DAS resulted in minimum total weed count (1.21 and 3.12 respectively), total weed dry matter (1.18 and 3.50 g/m2 respectively) and maximum weed control efficiency (97.03 and 79.95% respectively) when labours are easily available followed by post emergence application of clodinofop @ 60 g/ha+ metsulfuson methyl @4 g/ha in case of labours scarcity or it could be an alternative of hand weeding twice.