| Reduced Risk Status: |
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| IPM Compatibility: |
Per Requester: Good Fit; NK 138 appears to be a good fit for IPM in processing tomatoes because it would provide a novel mode of action for rotation against thrips and whitefly. This is especially important for resistance management and for managing thrips as vectors of tomato spotted wilt virus. Manufacturer information indicates activity on thrips and whitefly and reports no adverse effects on several beneficial insects and pollinators, suggesting compatibility with biological control and broader IPM programs. The use would also fit with pest monitoring and threshold-based treatment decisions rather than calendar-based applications
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| Reasons for need: |
The primary intended targets are thrips and whitefly in field-grown processing tomatoes. Thrips are a priority because of their role as vectors of tomato spotted wilt virus, including resistance-breaking strains. Whitefly are included because flometoquin is presented by the manufacturer as a whitefly-active material and could provide a new mode-of-action rotation option for regional whitefly pressure. The primary pest would be Western Flower Thrips; Processing tomato growers need a new mode-of-action insecticide for thrips and whitefly management. Thrips are a priority because they vector tomato spotted wilt virus. TSWV-resistant varieties reduced this risk for several years, but resistance-breaking strains are now present, making thrips control more important again. Flometoquin would provide a novel IRAC Group 34 rotation option for resistance management, with potential fit in IPM programs and activity on both thrips and whitefly; Current management includes monitoring, IPM practices, resistant varieties where useful, and existing insecticide programs. TSWV-resistant varieties previously reduced disease risk, but resistance-breaking strains have made thrips control more important again. A new mode of action is needed for rotation and resistance management:06/26; FL: In addition to thrips, Whitefly control in tomatoes is extremely complicated, and new chemistries are needed on a regular basis:06/26;
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| Requesting State(s): |
CA:Bagley, Z* ; FL:Martini, X ;
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| PCR Use Pattern: |
IR-4 HQ suggests: Make 2 foliar applications at 0.25 to 3 Liters NK 138 /ha with a 10-14 day retreatment interval and 1 day pre-harvest interval.
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| EPA Default Residue Trials: |
1 2 3-2 5 10-11
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| Efficacy/Crop Safety (E/CS) Data Required: |
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| E/CS Research Comments: |
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| Comments: |
Key Export Markets: Canada, Mexico, Japan, EU, England, etc; ai presented at the 2026 ITS; see PR# 14101 for greenhouse version; NKC supports as Researchable, Res & E/CS Needed:06/26/sb;
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