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Studies on the emergence of white grubs and their management in groundnut

KrishiKosh

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Title Studies on the emergence of white grubs and their management in groundnut
 
Creator Chauhan, Rahul
 
Contributor Dashad, S.S.
 
Subject Groundnut, White grub, Abiotic factors, Biopesticides, Poultry manure
 
Description Emergence pattern of white grub beetles in relation with abiotic factors
(temperature, relative humidity and rainfall) using light trap and their
management in groundnut by using different insecticides/biopesticides as seed
treatment and pre-sowing soil application were evaluated during kharif, 2005
at the Research farm of CCS, HAU Regional Research Station, Bawal (Rewari).
White grub beetles trapped on light trap were observed from Ist May to end of
November. MH-4 cultivar of groundnut was used in RBD design with 3
replications of 15 treatments in 5m x 4m plot size. Chlorphyriphos 20 EC and
quinalphos 25 EC @ 15 ml per kg seed were chemical insecticides used while
among biopesticides different doses of Pseudomonas maltophila (PM-4) @ 15, 20
and 25 g per kg seed , Pseudomonas spp. (P-7) @ 15, 20 and 25 g per kg seed,
Bt (Halt), Bt (Local strain) @ 20 g per kg seed and Azadirachtin 15 EC @ 20 ml
per kg seed were used as seed treatment. Phorate 10 G @ 25 kg per hectare
and poultry manure @ 2.5 and 5 tonne per hectare were used as pre-sowing
soil application and one untreated check (control), were used to study the
control of white grub.
Emergence of white grub started from 18th standard week after first
pre-monsoon rainfall of the season. Total 13 species (1998 beetles) of white
grub were reported with maximum number of beetles of Holotrichia
consanguinea (1214 beetles) followed by H. serrata (382 beetles). Peak
emergence of beetles was reported in the month of July. White grub emergence
was positively correlated with the temperature (r = 0.82), relative humidity (r =
0.77) and rainfall (r = 0.69). Groundnut germination was maximum (12.44
plants/2 mrl) in pre-sowing application of poultry manure @ 5 tonne per
hectare and seed treatment with Pseudomonas spp. (P-7) @ 25 g per kg seed.
Phorate 10 G @ 25 kg per hectare, P. maltophila (PM=4) @ 15.0 and 20.0 gm per
kg seed, Bt (Halt) and Bt (Local) @ 20 g per kg seed hampered the germination.
Significantly minimum mortality was observed in phorate 10 G (8.97%) followed
by chlorpyriphos 20 EC (13.73%) and quinalphos 25 EC (18.87%). Phorate 10
G @ 25 kg per hectare recorded highest net gain over control (31, 830 Rs.)
followed by quinalphos 25 EC (28,235 Rs.) and chlorpyriphos 25 EC (26,183
Rs.).
 
Date 2016-11-22T14:40:19Z
2016-11-22T14:40:19Z
2007
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/87048
 
Language en
 
Format application/pdf
 
Publisher CCSHAU