ECO-FRIENDLY APPROACHES FOR THE MANAGEMENT OF INSECT PESTS OF CABBAGE
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Date
2019-06
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University of Horticultural Sciences, Bagalkot
Abstract
The study on Eco-friendly approaches for the management insect pests of
cabbage was carried out at Kittur Rani Channamma College of Horticulture,
Arabhavi, University of Horticultural Sciences, Bagalkot during 2017-18.
Among the different border crops as insectary plants evaluated against insect
pests of cabbage in kharif season, cabbage bordered by Dill recorded lowest number
of aphids (2.63 number/ leaf), Coriander recorded lowest number of whiteflies
(4.04 number/ leaf) and Mustard recorded lowest number of DBM larvae
(0.36 no./plant). However, mustard plants recorded highest number of Ladybird
beetles (0.76 no./plant) and hover flies (0.93 no./plant).
Among the different IPM modules evaluated against insect pests of cabbage in
rabi season, adoptable IPM module registered least number of aphids (0.30 no./leaf)
followed by Chemi-intensive module (0.33 no./leaf), least number of whiteflies
(0.20 no./leaf) followed by Chemi-intensive module (0.28 no./leaf), less lncidence of
Spodoptera litura (0.36 no./plant) followed by recommended IPM module
(0.45 no./plant) and less incidence of diamondback moth (0.05 no./plant) followed by
chemi-intensive module (0.08 no./plant). Regarding natural enemies on insectary
plants, adoptable IPM module registered highest number of Ladybird beetles
(0.27 no./plant) followed by bio-intensive IPM module (0.26 no./plant) and highest
number of hoverflies (0.81 no./plant) followed by recommended IPM module
(0.52 no./plant).
However, among the IPM modules, Adoptable IPM module [mustard as an
intercrop and maize as a border crop, Neemazal (10000 ppm) @ 1 ml/l, Lecanicilium
lecani (2×108 CFU/g) @ 2 g/l, Nomuraea rileyi (2×108 CFU/g) @ 2 g/l and
Rynaxypyr 18.5 SC @ 0.1 ml/l] recorded highest cabbage yield (226.80 q/ha) and
highest B:C ratio (4.66) followed by Recommended IPM module which recorded a
yield of 208.90 q/ha and B:C ratio of 4.35. Hence, Adoptable IPM module having
eco-friendly components can be effectively used in managing insect pests if cabbage.