ISHS Acta Horticulturae 231: II International Symposium on Mango
STUDIES ON THE MANGO INFLORESCENCE MIDGE, EROSOMYIA INDICA GROVER |
| Authors: | S.R. Abbas, A. Verghese, M. Fasih |
| DOI: | 10.17660/ActaHortic.1989.231.15 |
| Abstract:
Systematic surveys were conducted in 1984 and 1985, and infested areas were classified based on percentage infestation. Spatial distribution studies showed that the midge infestation followed a negative binomial. The midge infests the newly emerged panicles by ovipositing at bud burst stage, and the first instar maggots bore into the growing panicle. Infested panicles have a characteristic right-angled bend, with a soiled exit hole, from which last instar maggots emerge to pupate in soil. The second generation then infests very young fruits, which eventually drop before the marble stage The biology and nature of damage of the pest was also observed. The midge had four larval instars, and field cage traps showed emergence of adults to be in the afternoon. Infestation was noticed at bud-burst stage, at fruit set and on tender leaves of new flushes. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
