Abstract:The experiment was conducted at College of Agriculture and Research Station, Janjgir-Champa, IGKV, Raipur (C.G.) during
rabi season 2016-17 and 2017-18 to find out the effect of integrated weed management on growth, yield and quality in rabi onion (
Allium cepa L.). The 14 treatments comprised of
pendimethalin @ 1.5 kg ha
-1 as PE, pendimethalin @ 1.5 kg ha
-1 as PE fb one hand weeding at 45 DAT, pendimethalin @ 1.5 kg ha
-1 as PE fb fenoxaprop-p-ethyl 0.080 kg ha
-1 as PoE at 45 DAT,
oxyfluorfen @ 0.25 kg ha
-1 as
PE, oxyfluorfen @ 0.25 kg ha
-1 as PE fb one hand weeding at 45 DAT, oxyfluorfen @ 0.25 kg ha
-1 as PE fb fenoxaprop-p-ethyl 0.080 g ha
-1 as PoE at 45 DAT,
oxadiargyl @ 0.080 kg ha
-1 as PE, oxadiargyl @ 0.080 kg ha
-1 as PE fb one hand weeding at 45 DAT, oxadiargyl @ 0.080 kg ha
-1 as PE fb fenoxaprop-p-ethyl 0.080 kg ha
-1 as PoE at 45 DAT, propaquizofop 5% + oxyfluorfen 12% @ 0.15 kg ha
-1 PE, pendimethalin @ 1.0 kg ha
-1 PE fb propaquizofop 0.05 kg ha
-1 PoE at 45 DAT, oxadiargyl @ 0.070 kg ha
-1 PE fb propaquizofop 0.05 kg ha
-1 PoE at 45 DAT, Two hand weeding at 20 and 50 DAT and
weedy check. The experiment was laid out in randomized block design with three replications. Onion variety “Agrifound Light Red” was grown as a test crop.
The weed density and biomass of weeds were found minimum under two hand weeding at 20 and 50 DAT. All the herbicides treatments improved crop growth viz. plant height, Number of leaves, bulb yield quality parameter viz. dry weight of bulb TSS %, sulfure content in bulb, ascorbic content in bulb and reduced weed density and their weed biomass as compared to weedy check. Significantly highest bulb yield of onion (322.17 q ha-1) was noted under hand weeding twice at 20 and 50 DAT, however, it was statistically followed by oxyfluorfen @ 0.25 kg ha-1 as PE fb one hand weeding at 45 DAT (291.95 q ha-1), pendimethalin @ 1.5 kg ha-1as PE fb one hand weeding at 45 DAT and oxadiargyl 0.080 kg ha-1 as PE fb one hand weeding at 45 DAT (285.66 q ha-1). All these parameters were found minimum under weedy check.