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Integrated use of pink bollworm pheromone formulations and selected conventional insecticides for the control of the cotton pest complex in Pakistan

Published online by Cambridge University Press:  10 July 2009

B.R. Critchley ,
D.J. Chamberlain ,
D.G. Campion ,
M.R. Attique ,
M. Ali  and
A. Ghaffar
B.R. Critchley*
Affiliation:
Natural Resources Institute, Chatham Maritime, Kent, UK
D.J. Chamberlain
Affiliation:
Natural Resources Institute, Chatham Maritime, Kent, UK
D.G. Campion
Affiliation:
Natural Resources Institute, Chatham Maritime, Kent, UK
M.R. Attique
Affiliation:
Central Cotton Research Institute, Old Shujabad Rd., Multan, Pakistan
M. Ali
Affiliation:
Central Cotton Research Institute, Old Shujabad Rd., Multan, Pakistan
A. Ghaffar
Affiliation:
Central Cotton Research Institute, Old Shujabad Rd., Multan, Pakistan
*
Dr B. R. Critchley, Natural Resources Institute, Central Avenue, Chatham Maritime, Kent, ME4 4TB, UK.
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Abstract

Hollow-fibre, microencapsulated and twist-tie formulations of the pheromone of the pink bollworm Pectinophora gossypiella (Saunders) (Lepidoptera: Gelechiidae) were used in trials conducted in Pakistan from 1985–1988. Early season control of this pest by mating disruption, permitted an average reduction of two applications, of conventional insecticides otherwise required to control the cotton pest complex, particularly at the time of flower and fruit setting when beneficial insects are most numerous. The pheromone formulations, together with a mixture of selective and broad-spectrum insecticides in plots of 5 or 10 ha of cotton were compared with plots of cotton, of similar size in the same locality treated with a conventional insecticide spray programme and in plots where no insecticide applications were made for the control of bollworms. Comparisons of numbers of infested bolls and estimated yields showed that levels of control achieved using the pheromone/insecticide combinations were equal in effect to conventional programmes of insecticide sprays, whereas in plots where no bollworm control measures were taken, significantly higher bollworm infestations and reduced yield estimates were recorded.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 81 , Issue 4 , December 1991 , pp. 371 - 378
Copyright
Copyright © Cambridge University Press 1991

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