Effect of water extracts from Geraniaceae plants with adjuvant added on feeding and development of Colorado potato beetle (Leptinotarsa decemlineata Say)
2005
Lamparski, R., E-mail: [email protected] | Wawrzyniak, M. (University of Technology and Agriculture, Bydgoszcz (Poland). Dept. of Applied Entomology)
Water extracts from selected Geraniaceae plants, to which paraffin oil was added as adjuvant, were tested. It was observed that the plant extracts researched limited Colorado potato beetle feeding and development and adding adjuvant increased the effects. The highest antifeedant activity towards Colorado potato beetles and their larvae was observed in extracts obtained from Pelargonium x hortorum Bailey and Geranium pusillum L. The extract from Pelargonium x hortorum Bailey added to food showed a negative effect on the development of female reproductive organs and embryo development and showed the highest effectiveness in field conditions
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