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Biology and management of rice weevil, sitophilus oryzae l. in pop sorghum

KrishiKosh

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Title Biology and management of rice weevil, sitophilus oryzae l. in pop sorghum
 
Creator Kavitha Jadhav
 
Contributor Shekarappa
 
Subject Agricultural Entamology
 
Description enotypes, efficacy of grain protectants and organoleptic evaluations were carried out
under laboratory condition at Department of Agricultural Entomology, University of
Agricultural Sciences, Dharwad during 2005-06.
The biology of the rice weevil, S. oryzae on pop sorghum grain variety Talakal-6
revealed the larval and pupal period of 25.8 + 3.70 and 7.4 + 0.54 days, respectively. Total
life cycle from egg to adult completed in 40.2 + 4.69 days. Among the different grain
sorghum and pop sorghum varieties screened against S. oryzae, maximum per cent of grain
damage, per cent weight loss, population buildup and minimum per cent of germination was
observed in Shiggaon local, while Mugad local was proved relatively resistant. DSV-3 was
found relatively resistant among grain sorghum varieties.
The relative efficacy of different grain protectants were assessed by mixing the seeds
with different plant products and inert materials in plastic jars and jutebag. The treatments
sweetflag powder, neem seed kernel powder, custard seed powder and kaolinite were found
more effective by protecting the grains from S. oryzae damage. Maximum per cent of
popping was observed in sweetflag powder treatment. Whereas, treatments viz., sawdust, ash
and sand were not found effective. Organoleptic evaluation of popped sorghum indicated
maximum acceptance of grains treated with sweetflag powder followed by kaolinite and
neem seed kernel powder.
 
Date 2016-09-14T10:33:53Z
2016-09-14T10:33:53Z
2006
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/76579
 
Format application/pdf
 
Publisher UAS, Dharwad