Use of aromatic plant extracts as bio-insecticides for the control of stored-product insect, Sitophilus Granarius
Ethanol extracts of five plants materials i.e. chervil (Anthriscus cerefolium), bay (Laurus nobilis), sage (Salvia officinalis), fennel (Foeniculum vulgare) and rosemary (Rosmarinus officinalis) against wheat granary weevil, Sitophilus granarius L. were tested to determine their insecticidal properties. The results revealed that all of the tested materials with some variations had repellent and lethal effects against the pest as compared with the untreated check. Considering the % mortality of the insect as a main index, rosemary proved to be the most effective of these five plant materials, showed 60.5 % mortality, followed by sage (46.6 %) and chervil (31.4 %), while bay (19.2 %) was found less effective followed by fennel (26.4 %).