REVUS MZ FUNGICIDE
- APVMA no.
- 63053
- Registrant
- SYNGENTA AUSTRALIA PTY LTD
- Formulation
- WATER DISPERSIBLE GRANULE
Revus MZ Fungicide is a co-formulated water dispersible granule containing the active constituents mancozeb (600 g/kg) and mandipropamid (50 g/kg). Formulated as a high-performance fungicide, it is registered for the control of downy mildew in grapevines across Australian viticultural regions, from coastal blocks in the Hunter Valley and Yarra Valley to irrigated plantings in Sunraysia and the Riverland.
The product combines two complementary active constituents to deliver dual-action canopy protection. Mandipropamid provides localized systemic and translaminar activity that binds tightly to the plant wax layer and penetrates foliar tissue, while mancozeb acts as a reliable multi-site protectant establishing a defensive barrier on the plant surface.
Designed for preventative application, Revus MZ fits neatly into seasonal disease management programmes when weather conditions favour infection events. Incorporating this product into your vineyard spray diary helps secure leaf and bunch health during key growth periods while supporting sustainable resistance management practices.
Active constituents
- MANCOZEB600 g/kg
- MANDIPROPAMID50 g/kg
Registered uses
| Crop | Pest or disease |
|---|---|
| Grape | Downy mildew |
Withholding period
WITHHOLDING PERIOD: NOT REQUIRED WHEN USED AS DIRECTED. DO NOT GRAZE VEGETATION IN TREATED VINEYARDS OR CUT FOR STOCK FOOD.
When applied strictly according to the approved directions for use, a specific harvest withholding period is not required for grapes. However, animal safety restrictions strictly prohibit grazing livestock on treated vineyard vegetation or cutting treated vineyard growth for stock feed. Always check destination export market requirements and consult your winery spray schedule prior to harvest.
Mode of action
Revus MZ features two distinct biochemical modes of action. Mandipropamid is a Carboxylic Acid Amide (CAA) fungicide belonging to FRAC Group 40. It acts by inhibiting phospholipid biosynthesis and cell wall construction in oomycete pathogens, disrupting zoospore germination and mycelial expansion inside plant tissue. Mancozeb is a broad-spectrum, multi-site contact fungicide belonging to FRAC Group M03. It interferes with multiple thiol-containing enzymes within fungal cells, disrupting general energy production and cellular metabolism on the leaf surface.
Resistance management
Downy mildew (Plasmopara viticola) presents a high inherent risk for fungicide resistance, particularly against single-site systemic chemistries. The combination of mandipropamid with the multi-site contact active mancozeb reduces the selection pressure for resistant strains. To preserve product efficacy, do not rely on consecutive applications beyond label directions, alternate Revus MZ with effective fungicides from different FRAC groups, and adhere to CropLife Australia resistance management strategies for viticulture.
Tank-mix compatibility
Refer to the approved product label for explicit instructions on tank-mix sequence and partner compatibility. Exercise caution when combining water dispersible granules with emulsifiable concentrates or foliar oils, particularly during periods of high ambient temperature or crop stress, as phytotoxicity may occur. A small-scale jar test is recommended to confirm physical compatibility prior to broad-scale tank mixing.
Handling and environment
Always read and follow the approved product label and Safety Data Sheet (SDS) for detailed health, handling, and environmental precautions. Observe all safety directions regarding Personal Protective Equipment (PPE), spray drift management, and post-application re-entry requirements. Store the product in its original tightly closed container in a cool, well-ventilated store away from direct sunlight, foodstuffs, children, and animals. Take precautions to prevent runoff into aquatic environments and non-target vegetation.
Common questions
- When is the ideal time to include Revus MZ in a vineyard disease programme?
- Revus MZ is best applied preventatively ahead of predicted infection periods when climatic conditions favour downy mildew development. Early to mid-season deployment helps establish translaminar protection in new foliage while laying down a multi-site contact barrier across the canopy.
- How does combining mandipropamid and mancozeb aid resistance stewardship?
- Mandipropamid targets a specific site in the pathogen, whereas mancozeb disrupts multiple fungal metabolic processes simultaneously. Applying a multi-site protectant alongside a single-site CAA chemistry slows down the selection of resistant downy mildew populations.
- What stock feeding restrictions apply after spraying Revus MZ?
- While harvest withholding is not required for grapes when used as directed, there is a strict prohibition against grazing livestock on treated vineyard vegetation or harvesting cover crops/vineyard growth for stock food.
- Is Revus MZ rainfast after application?
- Mandipropamid binds rapidly to leaf cuticles and moves into foliar tissue, conferring excellent rainfastness once the spray deposit has thoroughly dried. Complete, even spray coverage remains essential for the surface contact protection provided by mancozeb.
- Where should I check for specific application rates and spray intervals?
- All specific application rates, spray volumes, maximum application counts, and re-entry intervals are detailed strictly on the approved APVMA product label attached to the container.