Nothing here is label direction — the label is the law. These are notes from other applicators, moderated before they appear. Check the labeling accompanying the product and applicable state requirements.
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Interface Stressgard is a Group 2 | 11 fungicide designed to enhance the color and density of turfgrass while providing protection against stress and controlling various turfgrass diseases. The active ingredients are triadimefon-N (23.53%) and tribuzole (1.44%). It is used on turfgrass to control diseases such as Brown Patch, Dollar Spot, Snow Mold, Fusarium Blight, Pythium Blight, and Curvularia Leaf Spot. Applications are intended for outdoor turfgrass areas. The product can be applied as a foliar spray or through irrigation. When applying, avoid drift to non-target areas like water bodies or residential lawns. Users should follow specific mixing instructions based on the target disease and use appropriate PPE, including long-sleeved shirts, long pants, and chemical-resistant gloves. Note that the product is not registered for use in California to control certain diseases. Always follow the specific rate and dilution instructions provided in the turf direction section for the specific disease being targeted.
| Target pest | Location | Rate | Unit | Dilution | Label notes |
|---|---|---|---|---|---|
| Brown Patch | Outdoor | 3 to 5 | fl oz/1,000 sq ft | Repeat at 14 to 21 day interval as long as needed. | |
| Dollar Spot | Outdoor | 3 to 5 | fl oz/1,000 sq ft | Repeat at 14 to 21 day interval as long as needed. | |
| Snow Mold | Outdoor | 0.5 to 5 | gallons of water/1,000 sq ft | 0.5 to 5 fl oz per 1,000 sq ft | Apply with sufficient water to ensure coverage. Do not allow spray to stand for longer than 2 hours. |
| Fusarium Blight | Outdoor | 4 to 7 | fl oz/1,000 sq ft | Repeat at 14 to 21 day interval as long as needed. | |
| Pythium Blight | Outdoor | 4 to 7 | fl oz/1,000 sq ft | Repeat at 14 to 21 day interval as long as needed. | |
| Large Patch | Outdoor | 4 | fl oz/1,000 sq ft | Make first application when conditions are favorable; repeat as necessary. | |
| Curvularia Leaf Spot | Outdoor | 4 to 7 | fl oz/1,000 sq ft | Repeat at 14 to 21 day interval as long as needed. |
| For pests | Location | Label notes |
|---|---|---|
| General Turfgrass | Outdoor | Use 0.5 to 5 gallons of water per 1,000 sq ft for foliar spray. |