Cruiser Maxx Potato Insecticide and Fungicide includes a systemic neonicotinoid insecticide (thiamethoxam) and a broad-spectrum, non-systemic (contact) fungicide (fludioxonil). (Note: Cruiser Maxx Potato Extreme and Cruiser Maxx Vibrance Potato are similar products with added systemic fungicide for broader protection.) This is a liquid seed treatment. The total water and product volume must be adjusted to deliver a maximum of 4 fl. oz. per 100 lbs. of seed since excess moisture may lead to increased seed rot. Apply Cruiser Maxx Potato before adding a dust or dust-based fungicide. The fungicide in this product has protectant activity only. It will not cure disease already present in the seed but will limit the spread of several fungal pathogens when cutting and planting. It will not control bacterial diseases. The insecticide component controls insects via ingestion. Expect 60-90 days of residual insect control, depending on the rate used, soil and environmental conditions, and insect pressure. Apply neonicotinoid insecticides (Group 4A) ONLY once a season because exposure to insecticides with long persistence in foliage can create intense selection pressure towards resistant insect populations.
Usage for thiamethoxam + fludioxonil on Potatoes
Preplant
| Target | Application per Acre | REI | PHI | MOA | Eff. | Notes |
|---|---|---|---|---|---|---|
| Aphid | See Label | 12 h | - | IRAC 4A; FRAC 12 | E | It may work too slowly to prevent spread of Potato Virus Y, especially when winged (migratory) aphid numbers are high. Apply at 0.19-0.27 fl oz/100 lb seed. |
| Beet Leafhopper | See Label | 12 h | - | IRAC 4A; FRAC 12 | G | Should provide some early season control. It may work too slowly to prevent rapid spread of phytoplasma diseases (e.g., purple top disease) when BLH numbers are high. |
| Colorado Potato Beetle | See Label | 12 h | - | IRAC 4A; FRAC 12 | E | Don't be alarmed to find newly emerged adult beetles alive on treated plants, because it can take days for them to start feeding, ingest the insecticide, and then die. But if larvae are found on treated plants, then the product residual is probably no longer active. Apply at 0.19-0.27 fl oz/100 lb seed. |
| Fusarium dry rot | 0.19 to 0.27 fl oz/100 lb seed | 12 h | - | IRAC 4A; FRAC 12 | G | This product will limit the spread of Fusarium spp. from infected seed during the cutting and planting process, but it will not cure disease already in the seed. Some Fusarium strains have shown reduced sensitivity to fludioxonil, so rotating or combining modes of action is important for resistance management. |
| Potato Psyllid | See Label | 12 h | - | IRAC 4A; FRAC 12 | E (a) | It should control migrating adult potato psyllids for 60-90 days. The application may be followed-up with in-season, foliar insecticides for a no-gaps psyllid management strategy. Apply at 0.19-0.27 fl oz/100 lb seed. |
| Rhizoctonia canker and black scurf | 0.19 to 0.27 fl oz/100 lb seed | 12 h | - | IRAC 4A; FRAC 12 | G | It will suppress seed-borne Rhizoctonia around developing sprouts. Avoid using seed from infected or heavily scurfed tubers, even with fungicides. Combine with a soil-applied product (in-furrow) to control soil-borne Rhizoctonia. |
| Silver scurf | 0.19 to 0.27 fl oz/100 lb seed | 12 h | - | IRAC 4A; FRAC 12 | G | It will limit the spread of H. solani (causal agent of silver scurf disease) from infected seed during the cutting and planting process. |
| Wireworms | See Label | 12 h | - | IRAC 4A; FRAC 12 | P | It can control wireworms that feed on the seed piece, but it will not prevent most damage to daughter tubers during the growing season. Apply at 0.19-0.27 fl oz/100 lb seed. |