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Studies on management of groundnut bruchid, Caryedon serratus (Olivier) during storage

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Title Studies on management of groundnut bruchid, Caryedon serratus (Olivier) during storage
 
Creator NAJITHA UMMER
 
Contributor MADHUMATHI, T
 
Subject physical control, storage, jute, layering, groundnuts, biological phenomena, pruning, pesticides, insecticides, storage structures
 
Description The experiment “Studies on management of groundnut bruchid,
Caryedon serratus (Olivier) during storage” was conducted in the Department
of Entomology, Agricultural College, Bapatla, Guntur district, Andhra Pradesh
during 2010-12.
The performance of groundnut genotypes were tested based on parameters
like fecundity, per cent adult emergence, mean development period, per cent
weight loss and per cent pod damage due to the infestation of C. serratus.
Genotypes were grouped into three categories as least susceptible, moderately
susceptible and highly susceptible.
The groundnut genotypes Abhaya and Kadiri 5, recorded low fecundity
(0 and 8.5), minimum weight loss (0 and 0.12 per cent) and pod damage (0 and
1.61 per cent by count and 0 and 1.5 per cent by weight) were categorized as
least susceptible genotypes. Kadiri 008 Bold and Kadiri-1641 with high
fecundity (50.5 and 52.5), weight loss (19.5 and 21.14 per cent) and pod damage
(83.55 and 84.46 per cent by count and 80.5 and 83.5 per cent by weight) were
grouped as highly susceptible genotypes to C. serratus.
Deltamethrin @ 30 mg a.i/m2 and malathion @ 150 mg a.i/m2 caused cent
per cent mortality of C. serratus at 24 HAT and found effective up to 180 DAT
with 60 and 16.66 per cent mortality.
Deltamethrin @ 30 mg a.i/m2 recorded the highest average toxicity of
82.38 per cent and found to be the most effective insecticide followed by
malathion @ 150 mg a.i/m2 with 67.62 per cent average toxicity. Deltamethrin @
30 mg a.i/m2 recorded the highest PT value of 14828.57 and found to be effective
followed by malathion @ 150 mg a.i/m2 (12171.43) on jute cloth disc against
C. serratus.
Deltamethrin @ 30 mg a.i/m2 was found to be the most effective
insecticide against C. serratus when sprayed on surface of gunny bag with 100 to
56.67 per cent mortality up to 180 days after treatment.
Groundnut pods stored in gunny bags treated with malathion @ 150 mg
a.i/m2
, deltamethrin @ 30 mg a.i/m2, spinosad @ 100 mg a.i/m2, spinosad @ 300
mg a.i/m2 and spinosad @ 500 mg a.i/m2 were effective in preventing the
groundnut infestation by C. serratus by showing 100 per cent mortality of beetles
at 24 HAT, zero adult emergence, zero pod damage and zero weight loss of pods
up to six months of storage period.
Groundnut pods stored in Magik bags were completely free from
infestation by C. serratus by recording zero adult emergence, zero pod damage
and zero weight loss up to six months of storage period
 
Date 2016-06-21T13:55:55Z
2016-06-21T13:55:55Z
2012
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/67601
 
Language en
 
Relation D9389;
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY