MISCELLANEOUS CROPS - FOLIAR SPRAY (FOR FOGGING (COLD FOGGING ONLY))
PVent controls seed-borne and soil-borne plant diseases such as damping- off, root and stem rot, and wilt caused by Alternaria, Bipolaris, Botrytis, Cladosporium, Colletotrichum, Fusarium, Mycosphaerella, Penicillium, Phytophthora, Plasmodiophora, Plicaria, Pyrenochaeta, Pythium, Rhizoctonia, Sclerotinia and Verticillium; certain storage diseases caused by Helminthosporium and Rhizoctonia; and foliar diseases like grapevine trunk diseases (several pathogens) as well as diseases caused by Alternaria, Anthracnose (Colletotrichum), Bipolaris, Botrytis, Cladosporium, Didymella, Fusarium, Monilinia, Mycosphaerella, Penicillium and Sclerotinia on (greenhouse or field-grown) vegetables, herbs, ornamentals, flowering plants, bedding plants, berries, cereals, legumes, pome and stone fruits, nut trees, tree and forest seedlings, turf and other labeled crops. PVENT also suppresses powdery mildew symptoms on these (greenhouse or field-grown) crops.
Apply PVENT by spraying or drenching the growth substrate, by incorporation into the growth substrate, as a foliar spray, by fogging, or by hydroponic or chemigation application in the field or greenhouse as an aqueous suspension.
PVENT has been evaluated for phytotoxicity on a variety of crops under various normal growing conditions. However, testing all crop varieties, in all mixtures and combinations, is not feasible. Prior to treating entire crop, test a small portion of the crop for sensitivity.
Tank Mixing: Do not combine PVENT in the spray tank with other pesticides, surfactants, adjuvants, or fertilizers if there has been no previous experience or use of the combination to show it is physically compatible, effective, and non-injurious under your use conditions. Observe the most restrictive of the labeling limitations and precautions of all products used in mixtures.
To ensure compatibility of tank-mix combinations, they must be evaluated prior to use. To determine the physical compatibility of this product with other products, use a jar test. Using a quart jar, add the proportionate amounts of the products to one quart of water with agitation. Add dry formulations first, then flowables, and then emulsifiable concentrates last. After thoroughly mixing, let this mixture stand for 5 minutes. If the combination remains mixed or can be readily remixed, it is physically compatible. Once compatibility has been proven, use the same procedure for adding required ingredients to the spray tank.
Surfactants are not generally needed. A non-ionic surfactant may be used in combination with PVENT for crops with waxy/hard-to-wet leaf surfaces.
Integrated Pest Control Programs: PVENT can be used in integrated pest control programs. Always check the compatibility of PVENT with other biological fungicides or chemical pesticides with the local distributor.
FOGGING APPLICATION INSTRUCTIONS
Use cold fogging systems only. Use a pressure of 0.036 psi and nozzle size of 100–150 microns.
CHEMIGATION USE DIRECTIONS
General Requirements -
1. Apply this product only through sprinkler, including center pivot, lateral move, end tow, side (wheel) roll, traveler, big gun, solid set, or hand move, or drip (trickle) irrigation systems. Do not apply this product through any other type of irrigation system.
2. Crop injury, lack of effectiveness, or illegal pesticide residues in the crop can result from non-uniform distribution of treated water.
3. If you have questions about calibration, you should contact State Extension Service specialists, equipment manufacturers or other experts.
4. Do not connect an irrigation system (including greenhouse systems) used for pesticide application to a public water system unless the pesticide label-prescribed safety devices for public water systems are in place.
5. A person knowledgeable of the chemigation system and responsible for its operation, or under the supervision of the responsible person, shall shut the system down and make necessary adjustments should the need arise.
Specific Requirements for Chemigation Systems Connected to Public Water Systems -
1. Public water system means a system for the provision to the public of piped water for human consumption if such system has at least 15 service connections or regularly serves an average of at least 25 individuals daily at least 60 days out of the year.
2. Chemigation systems connected to public water systems must contain a functional, reduced-pressure zone, backflow preventer (RPZ) or the functional equivalent in the water supply line upstream from the point of pesticide introduction. As an option to the RPZ, the water from the public water system should be discharged into a reservoir tank prior to pesticide introduction. There shall be a complete physical break (air gap) between the flow outlet end of the fill pipe and the top or overflow rim of the reservoir tank of at least twice the inside diameter of the fill pipe.
3. The pesticide injection pipeline must contain a functional, automatic, quick-closing check valve to prevent the flow of fluid back toward the injection pump.
4. The pesticide injection pipeline must contain a functional, normally closed, solenoid-operated valve located on the intake side of the injection pump and connected to the system interlock to prevent fluid from being withdrawn from the supply tank when the irrigation system is either automatically or manually shut down.
5. The system must contain functional interlocking controls to automatically shut off the pesticide injection pump when the water pump motor stops, or in cases where there is no water pump, when the water pressure decreases to the point where pesticide distribution is adversely affected.
6. Systems must use a metering pump, such as a positive displacement injection pump (e.g., diaphragm pump) effectively designed and constructed of materials that are compatible with pesticides and capable of being fitted with a system interlock.
7. Do not apply when wind speed favors drift beyond the area intended for treatment.
Specific Requirements for Sprinkler and Drip (Trickle) Chemigation -
1. The system must contain a functional check valve, vacuum relief valve and low pressure drain appropriately located on the irrigation pipeline to prevent water source contamination from backflow.
2. The pesticide injection pipeline must contain a functional, automatic, quick-closing check valve to prevent the flow of fluid back toward the injection pump.
3. The pesticide injection pipeline must also contain a functional, normally closed, solenoid-operated valve located on the intake side of the injection pump and connected to the system interlock to prevent fluid from being withdrawn from the supply tank when the irrigation system is either automatically or manually shut down.
4. The system must contain functional interlocking controls to automatically shut off the pesticide injection pump when the water pump motor stops.
5. The irrigation line or water pump must include a functional pressure switch that will stop the water pump motor when the water pressure decreases to the point where pesticide distribution is adversely affected.
6. Systems must use a metering pump, such as a positive displacement injection pump (e.g., diaphragm pump) effectively designed and constructed of materials that are compatible with pesticides and capable of being filled with a system interlock.
7. Do not apply when wind speed favors drift beyond the area intended for treatment.
Application Instructions for All Types of Chemigation -
1. Remove scale, pesticide residues, and other foreign matter from the chemical supply tank and entire injector system. Flush with clean water. Failure to provide a clean tank, void of scale or residues, may cause product to lose effectiveness or strength.
2. Determine the treatment rates as indicated in the directions for use and make proper dilutions.
3. Make sufficient stock solution of PVENT to allow for even injection into irrigation systems during the irrigation cycle. For preparing a stock solution, use clean water with a neutral pH and devoid of salts and chemicals.
4. Prepare a solution in the chemical tank by filling the tank with the required water and then adding product as required. Utilize agitation to keep solution in suspension. Apply continuously for the duration of the water application.
5. Apply in sufficient amount of water to move into root zone. Repeat every 3–6 weeks for disease control, depending on disease pressure and new plant growth.
6. When applying through sprinkler irrigation systems for soil-borne disease control, use the high rate and time the application for the early stages of crop growth when crop canopy is sparse, which will allow PVENT-injected water to reach the ground more efficiently.
APPLICATION RATE, TIMING, FREQUENCY AND OTHER APPLICATION INSTRUCTIONS
For fogging (cold fogging only)–Make a 0.1% suspension (0.13 oz. PVENT per gallon of water) and apply as a fog at a rate of 0.6–1 gallon of suspension per every 10,000 sq. ft. of crop area.