Praiz Fungicide

Praiz Fungicide

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Product Overview

Praiz Fungicide is a highly effective fungicide that protects crops against diseases. Contains Chlorothalonil as its active ingredient which is an organic compound that controls pathogens. It provides a broad spectrum control of plant diseases such as leaf spots, blights, anthracnose, and mildews. The Praiz Fungicide is a contact fungicide that is long-lasting and convenient to use. It prevents the development of diseases and injuries. May be applied to various crops including asparagus, beans, potatoes, carrots, celeries, and peanuts. This fungicide provides protection that can last up to 28 days, depending on weather conditions and application. For better results, can be tank mixed with other insecticides and fungicides. Available in a 2.5-gallon jug.

Features and Specs

Active Ingredient Chlorothalonil - 54.0%
Target pests Rust, purple spot, Cercospora blight, botrytis blight, anthracnose, downy mildew, leaf spot, ring spot, fruit rots, scab, powdery mildew, bottom rot, pepper spot.
For use in Asparagus, Beans, Cabbage, Carrot, Celery, Corn, Mango, Onion, Papaya, Peanut, Potato, Soybean, Tomato, Broccoli, Cauliflower, Mint, Cranberry, Passion Fruit, Brussels Sprouts, Blueberries, Grasses grown from seed, Cucurbits, Cranberry.
Application May be applied multiple times during the growing season. In potatoes, early season application rates are 0.75 pint/acre then move to 1.0-1.5 pints/acre as disease pressure increases. In dry beans, apply 1.5-2.0 pints/acre.
Pet safe Yes, if used as directed on the label.
Formulation Liquid formula.
Special Features Can last up to 28 days.
Shipping Weight 27.00 lbs
Manufacturer Winfield United CP (Mfg. Number: 186181)
EPA Registration 9779-320


General Precautions and Restrictions

This product must not be applied within 150 feet (for aerial and air-blast applications) or 25 feet (for ground applications) of marine/estuarine water bodies unless there is an untreated buffer area of that width between the area to be treated and the water body.

Do not combine Praiz with Dipel 4L, Latron AG-98, or Latron B-1956 as phytotoxicity may result from the combination when applied to some crops on this label.

Do not use on home lawns and turf sites associated with apartment buildings, daycare centers, playgrounds, playfields, recreational park, athletic fields, athletic fields located on or next to schools (i.e., elementary, middle, and high schools), campgrounds, churches, and theme parks.

Do not use on greenhouse-grown food crops.


Dosage rates on this label indicate pints of Praiz per acre unless otherwise stated. Under conditions favoring disease development, the high rate specified and the shortest application interval should be used. 

For each listed crop, the maximum total amount chlorothalonil active ingredient (lbs. a.i./A) which may be applied per acre of that crop (or crop group) during each growing season is given in bold print beneath the crop name. For each crop use situation listed below, the listed maximum individual and seasonal application rates must not be exceeded and the listed minimum retreatment intervals must not be decreased.

  • Asparagus
    • rust, purple spot, Cercospora blight
    • 2-4 pts. product/A
    • Use water volumes of 25-50 gallons per acre. Begin applications following the final harvest of spears. Repeat applications at 14-28 day intervals (the minimum retreatment interval is 14 days), depending on disease pressure. Use the higher rate and shorter interval if the disease severity begins to increase during the season or weather conditions are conducive for severe epidemics. Apply by ground.
  • Carrot
    • Cercospora leaf spot
    • 1 1/2 to 2 pts. product/A
    • Use in sufficient water to obtain adequate coverage. Start applications when disease threatens and repeat at 7 to 10-day intervals (the minimum retreatment interval is 7 days) to maintain control. Apply by ground, air or chemigation.
  • Passion Fruit
    • Alternaria fruit and leaf spot, anthracnose, Cercospora fruit spot
    • 2 pts. product/A
    • Apply with ground equipment in sufficient water to obtain adequate coverage of fruit and leaves. Begin applications during late bloom and repeat at 14-day intervals until weather conditions no longer favor disease development (the minimum retreatment interval is 14 days).
  • Potato
    • Late blight, early blight, botrytis vine rot, black dot
    • 3/4 then 1 to 1 1/2 pts. product/A
    • Begin applications at the low rate when vines are first exposed and leaf wetness occurs. Repeat applications at 5 to 10-day intervals (the minimum retreatment interval is 5 days).
    • Begin applying the higher label rates at 5 to 10-day intervals when any one of the following events occurs:
      • Vines close within the row;
      • Late blight forecasting measures 18 disease severity values (DSV)
      • The crop reaches 300 P-days.
    • Increase water spray volume as canopy density increases. Use the highest rate and shortest interval when plants are rapidly growing and disease conditions are severe.
    • Apply by ground, air, or chemigation. Do not exceed a 10-day interval between applications when using chemigation.

*See label for the complete list of crops and application rates. 

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