SEASONAL INCIDENCE AND MANAGEMENT OF MAJOR INSECT-PESTS OF CABBAGE (Brassica oleracea var. capitata L.)
Loading...
Date
2021-12-07
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
COLLEGE OF AGRICULTURE, UMMEDGANJ, KOTA
Abstract
“Seasonal Incidence and Management of Major Insect-Pests of Cabbage (Brassica oleracea var. capitata L.)” was conducted at experimental farm, College of Agriculture, Ummedganj-Kota (Raj.) during Rabi-2020-21. The aphid population was observed throughout the crop growth stage period commenced in the first week of December (49th SMW) thereafter, gradually increased and reached to peak in the last week of January (4th SMW). The infestation of diamondback moth was noticed in the last week of November (47th SMW) which gradually increased and reached to peak in the first week of January (1st SMW). The larval population of green semilooper larval population first appeared in the second week of December (50th SMW) which gradually increased and touched to peak in the third week of January (3rd SMW). While, tobacco caterpillar first appeared in the last week of November (47th SMW) which gradually increased and touched to peak in the last week of December (52th SMW).
Azadirachtin and Verticillium lecanii were proved to be most effective bio-pesticides against aphid on cabbage, Bacillus thuringiensis (kurstaki) was least effective against aphid. For management of lepidopteran insect-pests on cabbage such as diamondback moth, green semilooper and tobacco caterpillar the most effective chemical pesticides such as Spinosad, Emamectin benzoate and bio-pesticides were Bacillus thuringiensis (kurstaki), Beauveria bassiana found effective. Among the natural enemies, lady bird beetle and predatory spider were commonly observed. The treatment of Azadirachtin was proved safe for lady bird beetles and predatory spiders. Based on yield performance, significantly highest yield was registered in the treatment Spinosad which was at par with treatments Emamectin benzoate, While, the maximum benefit cost ratio (18.59) was recorded in the plots treated with Emamectin benzoate followed by Beauveria bassiana (7.99). The minimum benefit cost ratio (0.17) was recorded in the treatment of Spinosad due to their higher cost during present investigation.
Description
SEASONAL INCIDENCE AND MANAGEMENT OF MAJOR INSECT-PESTS OF CABBAGE (Brassica oleracea var. capitata L.)