STUDIES ON INSECT PESTS OF CASTOR WITH SPECIAL REFERENCE TO DEFOLIATORS (Achaea janata Linn. Spodoptera litura F. and Spilarctia obliqua Walker) AND THEIR MANAGEMENT
KrishiKosh
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Title |
STUDIES ON INSECT PESTS OF CASTOR WITH SPECIAL REFERENCE TO DEFOLIATORS (Achaea janata Linn. Spodoptera litura F. and Spilarctia obliqua Walker) AND THEIR MANAGEMENT
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Creator |
K L, MANJUNATHA
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Contributor |
G T, THIRUMALARAJU
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Subject |
fats, biological phenomena, animal husbandry, carbohydrates, grading, productivity, lipids, sweeteners, sugar, storage
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Description |
Studies on occurrence of insect pests of castor were carried out at ARS, Pavagada during Kharif 2013 and results revealed, twenty two insect species feeding on different parts of the crop. Among them, sixteen species were leaf feeders, five were sucking pests and one capsule borer belonging to families, Pyrgomorphidae, Acrididae, Noctuidae, Geometridae, Arctidae, Nymphalidae, Curculionidae, Agromyzidae, Limacodidae, Cicadellidae, Thripidae, Pentatomidae, Tetranychidae and Pyraustidae. Three larval parasitoids were recorded on Achaea janata viz,. Microplitis maculipennis Szepligeti, Euplectrus leucotomies Rohwer and Brachymeria spp. Totally sixteen entries were screened against different pests of castor, the entries, RG-3336, RG-3294, DPC-9, HCGP-2, RG-3388, DCH-519, HCGP-1, DCS-9, M-574, 48-1 and DCS-107 were found to be tolerant cultivars against leafminer, Capsule borer, semilooper and tobacco caterpillar infestation. The investigations on biology of A. janata were studied on castor during Kharif 2013. The observations revealed that, the incubation, larval, pre-pupal, pupal, total developmental, pre-mating, pre-oviposition and Oviposition periods occupied 2-4, 15-21, 1-2, 15-20, 34-37, 1-3, 1-3, 2-3 days respectively. Male and female longevity was 8-10 and 12-14 days, respectively. With a fecundity of 438-483 eggs and viability of 69.68-86.81 per cent. The results of the investigations on chemical control of castor semilooper, A. janata revealed, Rynaxypyr 20 SC @ 0.01 per cent gave the highest (79.53%) mortality, followed by spinosad 45 SC @ 0.01 per cent (77.03 %), chlorfenapyr 10 EC 0.03 per cent (76.55 %) and flubendiamide 480 SC 0.01 per cent (76.24 %) |
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Date |
2016-10-25T14:15:29Z
2016-10-25T14:15:29Z 2014-07-21 |
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Type |
Thesis
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Identifier |
Th-10833
http://krishikosh.egranth.ac.in/handle/1/81859 |
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Language |
en
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Format |
application/pdf
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Publisher |
University of Agricultural Sciences GKVK, Bangalore
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