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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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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
 
Creator K L, MANJUNATHA
 
Contributor G T, THIRUMALARAJU
 
Subject fats, biological phenomena, animal husbandry, carbohydrates, grading, productivity, lipids, sweeteners, sugar, storage
 
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 %)
 
Date 2016-10-25T14:15:29Z
2016-10-25T14:15:29Z
2014-07-21
 
Type Thesis
 
Identifier Th-10833
http://krishikosh.egranth.ac.in/handle/1/81859
 
Language en
 
Format application/pdf
 
Publisher University of Agricultural Sciences GKVK, Bangalore