Group 12 and Group 3 Fungicides; Group 4 Insecticide
Mode of Action
Cruiser Maxx Potato Extreme contains the fungicides Fludioxonil (Group 12) and Difenoconazole (Group 3), and the insecticide Thiamethoxam (Group 4).
Fludioxonil = Group 12 = phenylpyrroles – affects signal transduction
Difenoconazole = Group 3 = triazole – inhibits sterol biosynthesis
Thiamethoxam = Group 4A = neonicotinoid – affects nerve action
For resistance management, please note that Cruiser Maxx Potato Extreme contains a Group 4 insecticide (neonicotinoid class of chemistry) and Group 3 and 12 fungicides. Any insect or fungal population may contain individuals naturally resistant to Cruiser Maxx Potato Extreme and other Group 4 insecticides or Group 3 and 12 fungicides. A gradual or total loss of pest control may occur over time if these insecticides and fungicides are used repeatedly in the same fields. Other resistance mechanisms that are not linked to site of action but are specific for individual chemicals, such as enhanced metabolism, may also exist. Because resistance development cannot be predicted, the use of this product should conform to sound resistance management strategies established for the crop and use area.
To delay insecticide and fungicide resistance:
Where possible, rotate the use of Cruiser Maxx Potato Extreme with different groups that control the same pests in a field. Use tank mixtures with insecticides and fungicides from different groups when such use is permitted.
Pesticide use should be based on an IPM program that includes scouting, historical information related to pesticide use and crop rotation and considers cultural, biological and other chemical control practices. Implement an integrated disease management program that helps to maintain lower inoculum levels, thereby reducing the probability for the development of resistant Fusarium spp. isolates. This includes planting disease free tubers, not growing potatoes in the same field two years in a row and practising good hygiene in the storage bins.
In order to minimize the potential for the development of resistance among the labeled disease organisms do not use Cruiser Maxx Potato Extreme in any two consecutive seed generations.
If disease continues to progress after treatment with this product, do not increase the use rate. Discontinue use of this product, and switch to another fungicide with a different target site of action, if available.
Monitor treated pest populations for resistance development.
Contact your local extension specialist or certified crop advisors for any additional pesticide resistance-management and/or IPM recommendations for the specific site and pest problems in your area.
For further information or to report suspected resistance, contact company representatives at 1-87-SYNGENTA (1-877-964-3682) or at www.syngenta.ca.