DAMAGE ASSESSMENT AND MANAGEMENT OF INSECT AND OTHER ARTHROPOD PESTS OF CAPSICUM

Abstract

An experiment was conducted in the experimental field of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the period from October, 2018 to February, 2019 to evaluate the damage assessment and management of insect and other arthropod pests of capsicum. The experiment was laid out in RCBD 2 factor replicated with three times. For this study, factor A- V 1

(California wonder), V 2 B- T 1 (California hot pepper), V 3 : Botanical insecticide (Neem oil @ 3ml/L of water); T 2 ii (Bell pepper) and V 4 (Red army) and factor : Acaricide (Mitisol 5EC @ 2.50ml/L of water); T 3 : Synthetic (Imidacloropid 200SL @ 2gm/L of water) and T 4 : Control. In case of varietal performance, the number of insect pests like aphid, whitefly, thrips, gram pod borer and mite, insect pest infestation (i.e. leaves and plants) were low in California wonder and high in yield attributing characteristics (i.e. number of leaves, length of leaves, breadth of leaves, length of fruits, breadth of fruits, % fruit infestation by number, % fruit infestation by weight and yield) for California wonder. In case of different treatments, percent reducing the number of insect pests like aphid, whitefly, thrips, gram pod borer and mite, insect pest infestation (i.e. leaves and plants) over control were found in botanical insecticide (Neem oil) and high in yield attributing characteristics (i.e. number of leaves, length of leaves, breadth of leaves, length of fruits, breadth of fruits, % fruit infestation by number, % fruit infestation by weight and yield) and yield for botanical insecticide (Neem oil). Again in case of combinations of varieties and different treatments, the number of insect pests like aphid, whitefly, thrips, gram pod borer and mite, insect pest infestation (i.e. leaves and plants) were reduced in V 1 T 1 and high in yield attributing characteristics and yield in combination with California wonder and botanical insecticide (Neem oil). The order of rank of efficacy of the combination of varieties and treatments was V 1 T 1 < V 2 T 1 < V 1 < V 4 T 1 < V 1 T 3 < V 2 T 3 < V 4 T 2 < V 3 T 2 < V 4 T 3 < V 3 T 3 < V 1 T 4 < V 2 T 4 < V 3 .