Astir™
PCP #35356 · Nufarm Agriculture Inc. · Herbicide
Group 14 suspension concentrate herbicide containing sulfentrazone at 480 g/L for pre-plant or pre-emergence control of broadleaf weeds and grasses in chickpeas, field peas, flax, sunflower, soybeans, and wheat (spring and durum). Inhibits Protoporphyrinogen Oxidase IX enzyme required for chlorophyll formation. Persistent soil-applied herbicide requiring activation by rainfall or irrigation. Application restricted to once every other year.
Registered uses (12)
Crop × pest × application rate combinations from the official label. Rates converted to per-acre. Always confirm against the official label PDF before applying.
| Crop | Target | Rate | PHI |
|---|---|---|---|
| Chickpea | Kochia, Russian thistle (suppression), redroot pigweed, lamb's-quarters, wild buckwheat, Eastern black nightshade, common waterhemp, smooth crabgrass, large crabgrass, yellow woodsorrel, common groundsel, Powell pigweed, common purslane | 88.6–118 mL/acre | — |
| Chickpea | Wild buckwheat, kochia, lamb's-quarters, redroot pigweed, cleavers, Powell pigweed, Eastern black nightshade, common waterhemp, smooth crabgrass, large crabgrass, yellow woodsorrel, common groundsel, common purslane | 88.6–118 mL/acre | — |
| Flax | Kochia, Russian thistle (suppression), redroot pigweed, lamb's-quarters, wild buckwheat, Eastern black nightshade, common waterhemp, smooth crabgrass, large crabgrass, yellow woodsorrel, common groundsel, Powell pigweed, common purslane | 88.6–118 mL/acre | — |
| Flax | Wild buckwheat, kochia, lamb's-quarters, redroot pigweed, cleavers, Powell pigweed, Eastern black nightshade, common waterhemp, smooth crabgrass, large crabgrass, yellow woodsorrel, common groundsel, common purslane | 88.6–118 mL/acre | — |
| Pea | Kochia, Russian thistle (suppression), redroot pigweed, lamb's-quarters, wild buckwheat, Eastern black nightshade, common waterhemp, smooth crabgrass, large crabgrass, yellow woodsorrel, common groundsel, Powell pigweed, common purslane | 88.6–118 mL/acre | — |
| Pea | Wild buckwheat, kochia, lamb's-quarters, redroot pigweed, cleavers, Powell pigweed, Eastern black nightshade, common waterhemp, smooth crabgrass, large crabgrass, yellow woodsorrel, common groundsel, common purslane | 88.6–118 mL/acre | — |
| Soybean | Kochia, Russian thistle (suppression), redroot pigweed, lamb's-quarters, wild buckwheat, Eastern black nightshade, common waterhemp, smooth crabgrass, large crabgrass, yellow woodsorrel, common groundsel, Powell pigweed, common purslane | 88.6–118 mL/acre | — |
| Soybean | Wild buckwheat, kochia, lamb's-quarters, redroot pigweed, cleavers, Powell pigweed, Eastern black nightshade, common waterhemp, smooth crabgrass, large crabgrass, yellow woodsorrel, common groundsel, common purslane | 88.6–118 mL/acre | — |
| Sunflower | Kochia, Russian thistle (suppression), redroot pigweed, lamb's-quarters, wild buckwheat, Eastern black nightshade, common waterhemp, smooth crabgrass, large crabgrass, yellow woodsorrel, common groundsel, Powell pigweed, common purslane | 88.6–118 mL/acre | — |
| Sunflower | Wild buckwheat, kochia, lamb's-quarters, redroot pigweed, cleavers, Powell pigweed, Eastern black nightshade, common waterhemp, smooth crabgrass, large crabgrass, yellow woodsorrel, common groundsel, common purslane | 88.6–118 mL/acre | — |
| Wheat | Kochia, Russian thistle (suppression), redroot pigweed, lamb's-quarters, wild buckwheat, Eastern black nightshade | 88.6 mL/acre | — |
| Wheat | Kochia, wild buckwheat, lamb's-quarters, redroot pigweed, cleavers, Powell pigweed, Eastern black nightshade, common waterhemp, smooth crabgrass, large crabgrass, yellow woodsorrel, common groundsel, common purslane, Russian thistle (suppression) | 88.6 mL/acre | — |
About this content. This page presents the official PMRA label as published by Health Canada's Pest Management Regulatory Agency, the source of record. Always read the official label and consult your provincial pesticide- application authority before use. Report an error.