KULKARNI, K.A.HEGDE, MAHABALESHWAR2019-11-062019-11-061998-08-19Th-4855http://krishikosh.egranth.ac.in/handle/1/5810134589Invcrtigatioii on Cbrysoperia cmea (Stephens) Viz., standardization of mass I method, inbreedu^ studies in mass culture, response to kairomone, attraction, mnirrvation, rdease method in cotton ecosystem and impact of neem based pesticides imder field conditioe, were carried out fior two seasons during 1995-97. hdmMaariag of Ccanea larvae in groups by usiag wood shavings proved to be R^bambp recording 88.00 per cent puparion, oa par with individual rearing in injection vials (93%) and plastic louvers (91%). The mass rearing of 100 larvae per basin of size 35 cm diameter and 7 cm height was found to be nptiaw. AuKmg the Corcyra egg anmhmalions evafaated for laass rearuttnnaoelarvae with wood shavings as filler material, the promioe of 5 oc of Oanvweggp in two instalments of 1.25+3 .75 cc woaf sth per opvreedda ttoo rb. e Ethvea lbueastti ohnae oefd c ohne acpoesrt seocounrcoem oicfs facdsemlt)m, g aroduwlttsh iannddic faetceudn tdhiatyt blackgram powder can be istiiiimif for ptsiiiaiii without affecting their fecundity (353.00 eggs/female)! There was slow dnclue in charaeiers especially per cent hatchability and fecundijif mau acaiud from first generation (90.66 and 363.33) to 24th genaratum (77.67 and 235.00). Crossing of inbred progeny of laboratory colony ate 5th generation did not resdh mto marked improvement in vigour of hybrid progeny. The response of C.camea third instar larvae starved for four hours was maximum (1.22 min) when exposed to wax droplets coated with H.anaigera scale extract. Among the food attractanu tried, tryptopfaan (0.01%) proteincx (2%) mixture concentration was found to be promiring in attractioa of Ccanea adults on cotton ctop. Among the intercrops tried with cotton, hiceme fiivouied more natural enemies udiile, natural enemy population was least on cotton intercropped wfrh soybean. Among the C.camea release SMthods tested on cotton, larval bnishang proved to be the best followed by larval dusting, larval tapping and egg stopling. canam egg load and larval population were significantly low in all the neem based peKiddes sprayed plots compared to control. The recovmy of the psufoinry huvun wans Mffik when release was made after spray before spcay.ennullThesis