Comparative toxicity of Rosmarinus officinalis L. essential oil and blends of its major constituents against Tetranychus urticae Koch (Acari: Tetranychidae) on two different host plants.
Bioassays of Rosmarinus officinalis L. essential oil and blends of its major constituents were conducted using host-specific strains of the two-spotted spider mite, Tetranychus urticae Koch, on bean and tomato plants. Two constituents tested individually against a bean host strain and five constituents tested individually against a tomato host strain accounted for most of the toxicity of the natural oil. Other constituents were relatively inactive when tested individually. Toxicity of blends of selected constituents indicated a synergistic effect among the active and inactive constituents, with the presence of all constituents necessary to equal the toxicity of the natural oil.
Faculty of Land and Food Systems, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada.
Saber
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Miresmailli
Rod
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Bradbury
Murray B
MB
Isman
D000818:Animals; D001892:Camphanes; D053138:Cyclohexenes; D004357:Drug Synergism; D007306:Insecticides / Q000737:chemistry; D007928:Lethal Dose 50; D000077222:Limonene; D018551:Solanum lycopersicum; D039821:Monoterpenes; D027805:Phaseolus; D010938:Plant Oils / Q000737:chemistry*; D027542:Rosmarinus / Q000737:chemistry; D013729:Terpenes; D040102:Tetranychidae
D001892:Camphanes; D053138:Cyclohexenes; D007306:Insecticides; D039821:Monoterpenes; D010938:Plant Oils; D013729:Terpenes; D000077222:Limonene