Biology and Management of Pulse Beetle, Callosobruchus chinensis (L.) Infesting Black Gram, Vigna mungo (L.)
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Date
2020-10-09
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MPUT, UDAIPUR
Abstract
The present investigation on “Biology and management of pulse beetle,
Callosobruchus chinensis (L.) infesting black gram, Vigna mungo (L.)” was carried
out under laboratory conditions at Department of Entomology, Rajasthan College of
Agriculture, MPUAT, Udaipur during July-December, 2019.
The study revealed that the mean hatching period of pulse beetle eggs was
4.10 days. The mean larval and pupal period was 26.57 days. The mean preoviposition,
oviposition and post-oviposition period of female pulse beetle were 5.83,
4.77 and 1.77 days, respectively. The mean male and female longevity were 8.43 and
12.37 days, respectively. Total life cycle of male and female pulse beetle were
completed in 39.03 and 42.97 days, respectively. The mean fecundity of female was
89.30 eggs and ranged from 81 to 97 eggs.
The different products evaluated against pulse beetle showed that seed
treatment with castor oil @ 5 ml/kg seed was found most effective treatment with
highest adult mortality (mean: 49.94%), lowest mean egg laid (24.50 eggs), lowest
adult emergence (13.83 adults), lowest grain damage (5.25%), lowest weight loss
(1.75%) and highest germination per cent (84.50%) of seeds. It was followed by
mustard oil @ 5 ml/kg seed, diatomaceous earth @ 5 gm/kg, custard apple leaf
powder @ 5 gm/kg and neem leaf powder @ 5 gm/kg. Whereas, cow dung ash @ 5
gm/kg was found least effective treatment with lowest adult mortality (24.65%),
highest mean egg laid (52.83 eggs), highest adult emergence (30.67 adults), highest
grain damage (26.25%), highest weight loss (14.50%) and lowest (61.50%)
germination of seeds.
Description
Biology and Management of Pulse Beetle Infesting Black Gram, Vigna mungo
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Citation
Dalal P.L. And Dangi N.L.