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.
Miresmailli
Saber
S
Faculty of Land and Food Systems, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada.
Bradbury
Rod
R
Isman
Murray B
MB
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