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Pink bollworm pectinophora gossypiella
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To study the Effect of Weather parameter on the Population of Pink Bollworm, Pectinophora gossypiella (Saunders) (Lepidoptera –Gelechiidae) in Cotton variety JK-4 were studied consecutive two cropping seasons of Kharip.
6p
angicungduoc6
22-07-2020
12
1
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The field experiments were carried out during Kharif 2017-18 at Hittinahalli village near the College of Agriculture, Vijayapura. The contemporary research unveiled that peak moth activity was observed during the II week of December (47th standard meteorological week) (52.78 moths / trap / night).
10p
nguaconbaynhay4
22-03-2020
13
1
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The relationship of temperature and photoperiod was studied under laboratory conditions relative to termination of diapause in Pectinophora gossypiella (Saunders). For this experiment two different photoperiods (12 and 16 h) each at two different temperature regimes (25 and 35oC) regimes at 70% RH were maintained in walk in growth chamber to study the effect of all these stimuli on the termination of diapause in the pink bollworm.
5p
nguaconbaynhay3
07-02-2020
14
0
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The gelechiid Pectinophora gossypiella (Saunders) is a limiting factor in Bt cotton production and has been reported to cause locule damage to an extent of 55 per cent and reduction in seed cotton yield in the range of 35- 90 per cent (Narayanan, 1962). By and large, pesticides are used as a major weapon for combating this pest damage. In India, total insecticides used to control bollworms alone were 9410 MT in the year 2003-04, worth of 747.6 crores (Kranthi, 2012).
11p
cothumenhmong1
11-12-2019
10
0
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In 1996-1999, studies on the utilization of pheromone traps for the estimation of adult emergence and the observation of the seasonal population dynamics of Pectinophora gossypiella (Saund.), which tends to spread in cotton growing areas, and on the determination of day-degree values for its biological stages were carried out in Amik Plain.
6p
aquaman27
15-01-2019
34
1
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