000			02533nam a2200229Ia 4500
003			OSt
005			20230317121332.0
008			130502s9999 xx 000 0 und d
040			_cCPGS
082			_a635.34978
100			_aRangad, Ridalang _9789
245			_aPopulation dynamics of Lepidopteran pests in cabbage and bio-efficacy of eco-friendly insecticides against Pieris brassicae(L.) / _cby Ridalang Rangad
260			_aUmiam: _bCPGS, CAU, _cc2010
300			_a[20],85p.: _bill., some col.;
440			_a[Entomology, School of Crop Protection] _9790
520			_aThe population dynamics of lepidopteron pests in cabbage was studied by recording the number of pests on five randomly selected plants from each plot during 2009- 2010. The lepidopteran pests recorded included cut worm (Agrotis ipsilon Hufner), cabbage leaf webber (Crocidolomia binotalis Zeller), DBM (Plutella Ayllostella), tobacco caterpillar (Spodoplera litura F), imported cabbage worm (Pieris rapae), cabbage butterfly (Pieris brassicae Linnaeus) and cabbage looper (Plusia orichalcea). Out of these, cabbage butterfly and cut worms were the major pests causing maximum damage. The natural enemies recorded were Apanteles (Cofesia) spp. and Hyposofer ebeninus (Grav.) Cut worms were first noticed in the first week of November, 2009 and reached its peak in the first week of December whereas DBM and tobacco caterpillar were first seen during the second week of November. 2009. Imported cabbage worm and cabbage leaf webber were observed during the third week of November, 2009 whereas; cabbage looper was first noticed in the fourth week of November, 2009. Cabbage butterfly first occured in the last week of January and the highest population was observed during the second week of February. It was also observed that weather parameters did not influenced the pest's population build up during the entire crop period. The evaluation of efficacy of the different eco friendly insecticides against Pieris brassicae indicated that endosulfan was the most effective but at par with botanicals, annonin and microbial, spinosad. It was also recorded that Beauveria bassi ana and azadirachtin were safe to the natural enemies as compared to spinosad which reduced the population of natural enemies.
650			_aCabbage-insect pest _9791
650			_aLepidopteran pests _xControl _9792
700			_aThakur, N.S.Azad _eMajor Advisor _9793
856			_uhttps://krishikosh.egranth.ac.in/handle/1/5810194062
942			_2ddc _cTH
999			_c3995 _d3995