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Use of intercrops and antifeedants for management of eggplant shoot and fruit borer Leucinodes orbonalis (Lepidoptera: Pyralidae)
Published online by Cambridge University Press: 02 June 2011
Abstract
The impact of vegetational diversity through intercrop and the application of antifeedants were assessed for their ability to reduce the infestation of shoot and fruit borer Leucinodes orbonalis Guen. on eggplant. Intercropping with coriander and fennel reduced the fruit damage to 12–15% compared with the plots with eggplant monoculture. Total yield of intercropped eggplant was significantly higher than the eggplant monoculture yield. Coriander and fennel were found to be equally effective in reducing infestation by L. orbonalis. Neem seed kernel extract (4%) and the neem-based product Neemarin® were found to be more effective in controlling L. orbonalis than ash dust and were lower than the untreated control. The fruit infestation level in the neem treatments (either of them) was 15–16% less than the untreated check. The interaction of intercrop and antifeedant showed that coriander-intercropped eggplant along with foliar spray of Neemarin® significantly reduced fruit damage. In a multiple choice chamber, orientation of female moths to eggplant was significantly reduced in the presence of fennel or coriander. With 38.9 and 37.1 per female, the extent of egg-laying by L. orbonalis on eggplant associated with fennel or coriander, respectively, was significantly less than on sole eggplant (48.4/female).
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- Copyright © ICIPE 2011
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