STUDIES ON PINK BOLLWORM, Pectinophora gossypiella (Saunders) IN Bt AND NON-Bt COTTON
Loading...
Files
Date
2007-08-29
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
University of Agricultural Sciences GKVK, Banglore
Abstract
Investigations were carried out during 2004-05 and 2005-06 at college of
Agriculture Dharwad, on the survey of pink bollworm infestation, reaction of Bt
and non-Bt cottons, infestation in Bt and non-Bt cotton, comparative
development of pink bollworm on Bt and non-Bt cotton bolls and molecular
characterization of pink bollworm.
The pink bollworm infestation at different locations surveyed was
significantly less in Bt cotton compared to non-Bt cotton. The maximum larval
population, green boll damage and locule damage was recorded at Raicbur in
Bt cotton (5.44 larvae/50 bolls, 9.45% and 16.06%, respectively) and non-Bt
cotton (10.75 larvae/50 bolls, 20.62% and 26.31%, respectively). Across the
locations, Bt cotton recorded more GOBs per plant (18.47 to 21.07) and less
BOBs per plant (4.05 to 4.98) and more seed cotton yield (8.8 to 9.97 q/ba)
Description
Keywords
null