抄録
When teflubenzuron solution was sprayed on potted apple sapling before and after oviposition of the apple leafminer, it strongly inhibited hatching of the eggs. The spray after oviposition showed high larvicidal activity against the young larvae at the1 sap-feeding stage, although it acted slowly. Some feeding was observed before the larval death, but it was negligible practically, on account of the very restricted areas of larval mine.
When teflubenzuron was applied against tisuue-feeding plder larvae, more than 60% of them grew up to pupae. There was no significant difference in the mined area between the teflubenzuron-treated and untreated plots. However, almost all these pupae showed morphological abnormality and bied before, adult emergence. This effect is considered to contribute to the suppression of succeeding generation.
