An experiment was conducted in the experimental field of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the period from October, 2019 to February, 2020 to analyse the effect of different mulching materials and varieties against major insect pest and growth performance of capsicum (capsicum annum L). The experiment was laid out in Randomized Complete Block Design (2 factor) replicated with three times. For this study, factor A-M0= No Mulching; M1= Black polythene Mulching; M2= Paddy straw; M3= White polythene Mulching and factor B- V1= California wonder; V2= Omax hybrid; V3= BARI Misti Morich-1; V4= BARI Misti Morich-2. Results revealed that effect of different mulching materials and varieties against major insect pest and growth performance of capsicum that significantly effect on most of the yield and yield contributing parameters studied in this experiment. Similarly, most of the traits were also affected significantly due to the combination effect. In case of varietal performance, California wonder (V1) showed the best results in terms of the number of whitefly, number of thrips, number of fruit borer, number of mites, number of aphid, number of leaf, length of leaf, fruit length, fruit breadth, number of fruit, number of infested fruit and total yield. In case of mulching treatments, M1 (Black polythene Mulching) showed outstanding performance for percent reducing the number of insect pests and getting the better growth and higher yield compared to those of other treatments. Again in case of combinations of varieties and different treatments, the number of infestation was reduced in V1M1 and V1M1 showed best results in terms of percentage of infested fruit, fruit infestation at weight basis, fruit length, fruit girth, number of fruit Plant-1 and total yield. There was negative relationship present in number of insect and percentage of fruit infestation in weight basis with the yield of capsicum, i.e. when the number of insect and percentage of fruit infestation in weight basis was increased the yield of capsicum was decreased.
Key words: Capsicum, mulching, arthropod pests