ROOT VEGETABLES - ROOT DIEBACK AND CAVITY SPOT
Presidio Fungicide is formulated as 4 lbs ai/gal suspendable concentrate (SC). The active ingredient in Presidio Fungicide is fluopicolide. Presidio Fungicide exhibits protective, curative, eradicative and antisporulant activity. Fluopicolide is locally systemic and translaminar and also moves systemically via xylem tissue.
Optimal disease control is achieved when Presidio Fungicide is applied in a regularly scheduled spray program used in combination and/or rotation with other effective fungicides that have different modes of action (i.e., non Group 43 fungicides).
GENERAL RESTRICTIONS AND LIMITATIONS
- A tank mix partner must be used with Presidio Fungicide for resistance management.
- Do not apply to greenhouse food crops.
- Do not apply this product when weather conditions favor spray drift from treated areas.
- When applying by air, observe drift management restrictions and precautions listed under “AERIAL APPLICATION”. Best control is achieved through ground application.
- Avoiding spray drift at the application site is the responsibility of the applicator. The interaction of many equipment and weather related factors determine the potential for spray drift. The applicator is responsible for considering all of these factors when making decisions. Where states have more stringent regulations, they should be observed.
MODE OF ACTION
Presidio Fungicide is active against selective oomycetes. It exhibits the typical mode of action of specific systemic fungicides against oomycete fungi affecting several steps in the reproduction cycle. Biochemical studies have shown that fluopicolide has an effect on spectrin-like proteins, believed to play a role in maintaining the membrane stability in ascomycete fungi or oomycetes, especially during hyphal tip extension. Microscopy studies demonstrate that fluopicolide induces a quick redistribution of these proteins from the membrane to the cytoplasm in both hyphae and zoospores.
Before applying Presidio Fungicide, start with clean, well maintained application equipment. The spray tank, hoses and booms must be cleaned to ensure no residue from the previous spraying operation remains in the sprayer. The spray equipment must be cleaned according to the manufacturer’s directions for the last product used before the equipment is used to apply Presidio Fungicide. If two or more products were tank mixed prior to Presidio Fungicide application, the most restrictive cleanup procedure should be followed.
Apply Presidio Fungicide in sufficient water to ensure thorough coverage of foliage, bloom and fruit. Thorough coverage is required for optimal disease control. For ground application, apply a minimum of 20 gallons of spray mixture per acre and for aerial application, do not apply less than 5 gallons of spray mixture per acre to assure uniform coverage. Follow individual “CROP SPECIFIC REQUIREMENTS” for appropriate spray volumes.
SPECIFIC REQUIREMENTS – All Food Crops
When to Apply: Begin application when crop and/or environmental conditions favor disease development. Applications must be made on a 7 to 14 day interval, depending on disease pressure. Under severe disease pressure use the higher labeled rate and shortest interval. Apply as a foliar spray in sufficient water to obtain thorough coverage.
Chemigation is not recommended when the primary disease is downy mildew or other foliar diseases.
Resistance Management: Presidio Fungicide must be used as part of an integrated pest management (IPM) program. Apply as a foliar spray in a tank mix with another labeled fungicide product with a different mode of action on the target pathogen in sufficient water to obtain thorough coverage.
RESTRICTIONS AND LIMITATIONS
- The maximum Presidio Fungicide application rate is 4 fl oz per acre per application and 12 fl oz per acre per season.
- Apply no more than 2 sequential applications of Presidio Fungicide before alternating with an effective fungicide from a different resistance management group.
- Do not make more than 4 applications of Presidio Fungicide per acre per season.
A tank mix including a labeled rate of another labeled fungicide product with a different mode of action on the target pathogen must be used with Presidio for resistance management.
Recommended spray interval: 10 days.