Acequinocyl is a quinoline acaricide that was synthesized by Agro Kanesho Ltd. in Japan and developed by Arvesta Corporation in the U.S. Acequinocyl has been designated as a reduced risk product by the EPA and will be marketed in the USA under the trade name Shuttle^TM. The biological performance and phytotoxic potential of acequinocyl were evaluated on various species of ornamentals at rates of 6.4 – 18.8 floz/100 gal (7.5 to 15.0 grams of active ingredient/100 liters of water). Acequinocyl was found to be effective against Two-spotted spider mite (Tetranychus urticae), Spruce spider mite (Oligonychus ununguis), and Cyclamen mite (Phytonemus pallidus) and did not induce phytotoxicity in most ornamental species. At the high rate on roses and impatiens, and at most rates on miniature roses, acequinocyl was found to be phytotoxic.

Details of the trial results and an update on the regulatory status of these products will be provided.