Effectiveness of four botanicals and four chemical insecticides for the control of Diamond back moth
(Plutella xylostella L.), Cabbage butterfly (Pieris brassicae L.) and Cabbage aphid (Brevicoryne
brassicae) on March-May cauliflower w~s evaluated at ARS, Pakhribas (1750 masl) during 2011 and
2012. Plants of" Snow Crown" variety of cauliflower were sprayed twice fortnightly after 20 days of
planting in the main field with Commercial azadirachtin formulation (0.003 %), Aqueous Melia
azedarach leaf extract, Aqueous tobacco extract + soap, Aqueous solution of Acorus calamus rhizome
powder, Cypermethrin 0.025%, Malathion 0.05%, Endosulfan 0.15% and Dichlorvos 0.075%. Each
treatment was replicated four times along with control. Pest. scoring was done twice after spraying.
Endosulfan 0.15%, Malathion 0.05% and Aqueous tobacco extract + soap were found superior among
all the insecticides to control the Diamond back moth. All four chemical insecticides including
Commercial azadirachtin formulation (0.003 %) and Aqueous tobacco extract + soap were equally
effective in controlling Cabbage butterfly. Aqueous Melia azedarach leaf extract was found ineffective
to control both Diamond back moth and Cabbage butterfly during both years. All the botanicals as well
as chemical insecticides were significantly effective in reducing Cabbage aphid population; however,
Endosulfan 0.15% and Aqueous tobacco extract+ soap were superior. Endosulfan treated plots yielded
the highest biomass of more than 22.25 kg in both the years.

Effectiveness of four botanicals and four chemical insecticides for the control of Diamond back moth
(Plutella xylostella L.), Cabbage butterfly (Pieris brassicae L.) and Cabbage aphid (Brevicoryne
brassicae) on March-May cauliflower w~s evaluated at ARS, Pakhribas (1750 masl) during 2011 and
2012. Plants of" Snow Crown" variety of cauliflower were sprayed twice fortnightly after 20 days of
planting in the main field with Commercial azadirachtin formulation (0.003 %), Aqueous Melia
azedarach leaf extract, Aqueous tobacco extract + soap, Aqueous solution of Acorus calamus rhizome
powder, Cypermethrin 0.025%, Malathion 0.05%, Endosulfan 0.15% and Dichlorvos 0.075%. Each
treatment was replicated four times along with control. Pest. scoring was done twice after spraying.
Endosulfan 0.15%, Malathion 0.05% and Aqueous tobacco extract + soap were found superior among
all the insecticides to control the Diamond back moth. All four chemical insecticides including
Commercial azadirachtin formulation (0.003 %) and Aqueous tobacco extract + soap were equally
effective in controlling Cabbage butterfly. Aqueous Melia azedarach leaf extract was found ineffective
to control both Diamond back moth and Cabbage butterfly during both years. All the botanicals as well
as chemical insecticides were significantly effective in reducing Cabbage aphid population; however,
Endosulfan 0.15% and Aqueous tobacco extract+ soap were superior. Endosulfan treated plots yielded
the highest biomass of more than 22.25 kg in both the years.