Residual Concentration-Acaricidal Activity Relationship of Chloromethanesulfonamide in Cotton and Orange Leaves against Carmine Mites and Citrus Red Mites:Acaricidal Activity of Chloromethanesulfonamide against Phytophagous Mites (Part 3)

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A concentration-acaricidal activity relationship of chloromethanesulfonamide (CMSA) against the carmine mite, Tetranychus cinnabarinus BOISDUVAL was examined by dipping cotton plant roots into CMSA solution. A relationship between CMSA concentration on/in the leaves and the acaricidal activity against the citrus red mite, Panonychus citri MCGREGOR, was also examined by foliar spray to mandarin orange trees. CMSA concentration in cotton leaves reached a peak 3 days after treatment and remained the same level thereafter. The acaricidal activity against the carmine mite increased gradually with time. By foliar spray CMSA concentration on/in the leaves declined rapidly as time elapsed, and so did the acaricidal activity. CMSA concentration in washed citrus leaves was at its highest 24hr after spraying. The acaricidal activity of CMSA against the citrus red mite was parallel to its concentration in the citrus leaves.
日本農薬学会の論文