Vivando fungicide is formulated as a suspension concentrate (SC). Vivando provides control of powdery mildew of grapes. Vivando provides optimum disease control when applied in a regularly scheduled protective fungicide program and when used in a spray program that rotates fungicides with different modes of action.
Mode of Action
Metrafenone, the active ingredient in Vivando fungicide, affects several stages in the infection process of the powdery mildew pathogen. It has a different mode of action than that of other fungicides registered for use against grape powdery mildew. Metrafenone affects normal development and growth processes of the powdery mildew pathogen. It inhibits spore germination, infection, and subsequent mycelial growth. It also reduces sporulation by preventing normal development of conidiophores and conidia.
Vivando contains metrafenone, a fungicide with a mode of action different from that of other fungicides currently registered for use against grape powdery mildew. Vivando is effective against pathogens resistant to other fungicides with a mode of action different than that of metrafenone. However, isolates of the powdery mildew pathogen may dominate the fungal population if metrafenone is used predominantly and repeatedly in the same vineyard in successive years as the primary method of control for the targeted powdery mildew pathogen species. This may result in reduction of disease control by Vivando.
The following recommendations may be considered to delay the development of fungicide resistance:
- Tank Mixtures
Use tank mixtures with fungicides from different target site of action groups that are registered/permitted for the same use and that are effective against the pathogens of concern.
BASF recommends that no less than the minimum labeled rates of each fungicide in the tank mix be used.
- Integrated Pest Management (IPM)
Vivando should be integrated into an overall disease and pest management program. Cultural practices known to reduce disease development should be followed. Consult your local extension specialist, certified crop advisor and/or BASF representative for additional IPM strategies established for your area. Vivando may be used in Agricultural Extension advisory (disease forecasting) programs that recommend application timing based on environmental factors favorable for disease development.
Monitor efficacy of all fungicides used in the disease management program against the targeted pathogen and record other factors that may influence fungicide performance and/or disease development. If Vivando appears to be less effective against a pathogen that it previously controlled or suppressed, contact a BASF representative, local extension specialist, or certified crop advisor for further investigation.
Ground Application Only
Vivando is not currently intended for aerial, chemigation, or handheld application methods.
Use Vivando in sufficient water to ensure thorough coverage of foliage and fruit. See Table 1. Use Directions for Grapes for specific application rates and application intervals.
Restrictions and Limitations
- Maximum Seasonal Use Rate: 46.2 fl ozs Vivando fungicide (0.9 lbs ai per acre). DO NOT apply more than the maximum rate per acre per season.
- Maximum Rate per Application: 15.4 fl ozs Vivando (0.30 lbs ai per acre). DO NOT apply more than the maximum rate per acre per application.
- Minimum Spray Interval: DO NOT exceed the minimum spray interval of 14 days.
For control of grape powdery mildew, begin applications of Vivando as of bud break prior to onset of disease, using 10.3 to 15.4 fl ozs per acre on a 14- to 21-day interval. Use the higher rate and the shorter interval when disease pressure is high. Vivando must be applied before visual symptoms of powdery mildew appear. Vivando has no curative properties and will not control latent or established infections of powdery mildew. If powdery mildew infection is established, Vivando should be applied in a tank mix combination or following application of a curative fungicide.
DO NOT apply at rates higher than 15.4 fl ozs product. The minimum interval between sprays is 14 days.
DO NOT make more than 2 sequential applications of Vivando before alternating to a labeled fungicide with a different mode of action.