Torac Insecticide from Nichino America, Inc. has received U.S. EPA label expansion for use in onions. The insecticide is used to control thrips. The active ingredient tolfenpyrad blocks cellular respiration and is effective on immature and adult stages of thrips. Because Torac causes rapid cessation of feeding in the pest, it also aids in reducing the transmission of Iris yellow spot virus.
Torac belongs to the METI class of compounds and is an IRAC Group 21A insecticide. Nichino recommends using Torac in rotation with insecticides of different modes of action for effective resistance management. Torac has a seven-day pre-harvest interval.
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