出版社：Polish Society of Ecological Engineering (PTIE)
摘要：The objective of the study was to examine the effect of aqueous extracts from fennel (Foeniculum vulgare Mill.) seeds at 2%, 5%, 10% and 20% concentrations on the feeding of peal leaf weevil (Sitona lineatus L.) on broad bean (Vicia faba L.).The experiment was conducted in the laboratory, in six replicates.Feeding intensity assessment was conducted by dipping leaves of broad bean in respective solutions of the extracts and determining the area of broad bean leaves, eaten by pea leaf weevil beetle in the 12 hour intervals.In addition, absolute deterrence index and palatability index were calculated.As a result of the observation no significant limiting effect of fennel seed aqueous extracts on the feeding of the pea leaf weevil females was shown.All of the used fennel extracts had inhibitory effect on the feeding of male S.linetaus and the strongest effect of extracts was observed in the first 36 hours of the experiment.The high values of the palatability index (particularly for the females) with relatively low absolute deterrence index, indicate limited possibilities of the use of aqueous extracts from fennel seeds for the protection against the feeding of the beetles from the genus Sitona.
关键词：Sitona lineatus L ; biological control ; Foeniculum vulgare Mill ; plant extracts
