Shylesha, A NARAVINDA2023-01-052023-01-052022-12-30Th-13265https://krishikosh.egranth.ac.in/handle/1/5810191255Bhendi or Okra Abelmoschus esculentus L. Moench) is one of the important vegetable crop, which is growing throughout the India. Due to ill effect of chemicals, usage of botanicals, bio pesticides and natural enemies, is an ecologically viable option for sustainable pest management. The experim ents were conducted during rabi 2019, S ummer 2020 and k harif 2020 on bhendi crop to study the population dynamics of sucking pests and their natural enemies The results revealed that t he activity of insect pests such as aphids, leafhoppers, were more in k harif , the whiteflies activity was more in s ummer. The activity of predators like ladybird beetles and spiders were more in k harif The population of total predatory and parasitoids fauna occurring in bhendi field viz., ants 20 species ), spiders 17 species ), coccinellids 11 species ), other predators 12 species like green lacewing, praying mantis, earwigs, etc.etc., and Hymenopteran parasitoids 24 species About 17 species of natural enemies were molecularl y characterized and their sequence in the range of 532 to 658 bp product of COI gene and their accession numbers obtained from NCBI data base T he botanicals and mycopathogens were evaluated against sucking pests of bhendi. The result revealed that, among the treatments L ecanicillium lecanii Zimmerman ) @5g/l , was found to be superior against leafho ppers and whiteflies and Neem oil @ 0.5%, was found effective against aphid’s population. Field evaluation of braconid parasitoids against t he larval population fruit borers like Earias vittella (Fab and Helicoverpa armigera Hubner were showed that Trichogramma chilonis Ishii + Chelonus blackburnii ( Bracon brevicornis (Wesmael) is the most superior combination of parasitoids in larval parasitization. The parasitic potential of B. brevicornis was and C. blackburni was evaluated against the fruit borers . The result revealed that, the highest parasitization of B. brevicornis and C. blackburni was in 5:10 and 5:100 parasitoid host ratio respectively.EnglishThesis