Group 12 fungicide
Mode of Action
Fludioxonil, the active ingredient in Maxim PSP, belongs to a new class of chemical compounds called phenylpyrroles. This represents the first new potato seed treatment chemistry to be developed in more than 15 years. Fludioxonil is active against fungi that belong to the classes Ascomycetes, Basidiomycetes and Deuteromycetes. Fludioxonil, a naturally occurring antifungal compound, acts on the vital processes within the cell that are required to keep the fungus alive and reproducing. It has contact activity, inhibiting the protein kinase, which results in disrupted membranes. It is highly active at very low rates and is non-systemic in the plant system.
Maxim PSP is a Group 12 fungicide.
Strains of some fungi may develop tolerance to Maxim PSP after prolonged usage. It is important to follow label rates and directions and to observe all practices which minimize the occurrence of resistance.
Where possible, rotate the use of Maxim PSP or other Group 12 fungicides with different groups that control the same pathogens. In order to minimize the potential for the development of resistance among the labeled disease organisms do not use Maxim PSP in any two consecutive seed generations.
Use tank mixtures with fungicide/bactericides from a different group when such use is permitted.
Fungicide/bactericide 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.
Monitor treated fungal/bacterial populations for resistance development.
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/bactericide) with a different target site of action, if available.
Resistance Management (cont’d):
Contact your local extension specialist or certified crop advisors for any additional pesticide resistance-management and/or IPM recommendations for specific crops and pathogens.
For further information and to report suspected resistance, contact Syngenta Canada Inc. at 1-87-SYNGENTA (1-877-964-3682) or at www.syngenta.ca