فعالية بعض المستخلصات النباتية في عثة درنات البطاطا-البطاطس Lepidoptera : Gelechiidae)‎ Phthorimaea operculella Zeller)‎

الملخص EN

The cfficacy of three plant extracts: China berry (Melia azaderach L.) seeds, Eucalyptus leaves (Eucalyptus comaldulensis Dehnh.) and Clove flower buds (Eugenia caryophylatta Thunb.) were tested on larvae and adults of potato tuber moth (Phthorimaea operculella Zeller).

Results indicated the presence of fatal effect on larvae, which varied significantly according to the type of extract, concentration and time of exposure.

Comparatively, the cfficacy of clove flower buds extract was the best followed by Eucalyptus leave extracts and then China berry seed extracts.

Meanwhile, all extracts used showed fatal action on adults simillar to that encountered with larvae, in addition to a negative effect on adult mating and inhibition of egg laying by females.