Biradar, A.P.Kattebennuru, Basavaraj2022-01-122022-01-122017-07https://krishikosh.egranth.ac.in/handle/1/5810180721An experiment entitled “Studies on natural enemies and management of citrus leaf miner, Phyllocnistis citrella Stainton (Lepidoptera: Gracillaridae)” was conducted in farmers field at Ukkali of Vijayapur district. A survey for natural enemies of the citrus leaf miner in citrus ecosystem was carried out in Vijayapura district of Karnataka during 2016-17. During the survey parasitisation of citrus leaf miner by Citrostichus sp. (Hymenoptera: Eulophidae) was noticed. Six generas of predaceous spiders viz., Neoscona nautica (Araneidae), Neoscona sp. (Araneidae), Bianor sp. (Salticidae), Peucetia sp. (Oxyopidae), Stegodhyphus sp. (Eresidae) and Oxyopes sp. (Oxyopidae), one species of Coccinellid, Chilomenes sexmaculata and green lacewing, Chrysoperla zastrowi sillemi were noticed. The genus Citrostichus parasitoids were solitary, most common and parasitized the second and third larval stages of citrus leaf miner. Predaceous spiders out numbered the coccinellids and green lacewing in lime orchard. Investigation on managing the citrus leaf miner were conducted with ten treatments of organics and twelve treatments of insecticides on citrus leaf miner. Among the foliar sprays of organics, neem seed kernel extract 5 per cent + biodigester solution 3 per cent (2.52 live mines per 10 cm shoot) recorded least number of live mines per shoot, which was on par with biodigester solution 3 per cent (2.42 live mines per 10 cm shoot) treatment. Among the inorganics, thiamethoxam 25 WG @ 0.2 g/l (3.52 live mines per 10 cm shoot) recorded least number of live mines per shoot, which was on par with flubendiamide 480 SC @ 0.1 ml/l (3.62 live mines per 10 cm shoot), spinosad 45 SC (5.62 live mines per 10 cm shoot) and flonicamide 50 WG @ 0.3 g/l (6.46 live mines per 10 cm shoot) treatments. Thus, both insecticides and botanicals can be used for management of citrus leaf miner in integrated pest management programme.EnglishThesis