JH Biotech - Fosphite | Systemic Phosphite Fungicide

Brand: JH Biotech

Fosphite

Fosphite is a systemic phosphite fungicide, EPA registered under number 68573-2 and approved by EPA as a Reduced Risk Pesticide. It controls Phytophthora, Pythium, and downy mildew on food crops, ornamentals, and bedding plants, Phytophthora in conifers, and Pythium in turf. It is a FRAC Group 33 fungicide with two modes of action: direct fungicidal activity and induced plant defense response.

Fosphite may be applied by foliar spray, soil drench, soil incorporation, bare root dip, and aerial application. It has a 4-hour restricted-entry interval and a 0-day pre-harvest interval, so it may be applied up to the day of harvest. A representative rate is 1 to 3 quarts in a minimum of 100 gallons of water per acre by ground, or a minimum of 10 gallons per acre by air. Do not apply at less than 3-day intervals.

Available Options

• 2.5 Gal (sold in packs of 2)
• 55 Gal Drum
• 250 Gal Tote

Key Features

• Mono- and dipotassium salts of phosphorous acid at 53.0 percent
• EPA registered as a Reduced Risk Pesticide, EPA Reg. No. 68573-2
• Product registered in all 50 states and the District of Columbia per the manufacturer
• 4-hour re-entry interval
• 0-day pre-harvest interval, may be applied up to the day of harvest
• Two modes of action: fungicide and induced plant immune response
• FRAC Group 33 fungicide, useful resistance-management rotation partner
• 6.22 lbs active ingredient per gallon, equal to 3.90 lbs phosphorous acid
• Multiple application methods including foliar, soil drench, bare root dip, and aerial
• Low application rate and low phytotoxicity

Ideal Applications

• Phytophthora, Pythium, and downy mildew control on food crops
• Ornamentals and bedding plants, indoor and outdoor greenhouse crops
• Phytophthora in conifers, pines, and oaks
• Pythium in turf
• Post-harvest potato treatment for pink rot and late blight
• Post-harvest citrus for green mold, blue mold, and brown rot

Registration and Label Restrictions

Fosphite is a fungicide registered with the US Environmental Protection Agency, EPA Reg. No. 68573-2. Pesticides must also be registered in each state before they may be sold or used there, and product registration in a state does not mean every labeled use is permitted there.

The EPA-accepted label dated 19 July 2024 carries state-specific use restrictions. A number of crop and pest uses are marked not registered for use in California, and a number are marked not for use in New York. Seed treatment application is not for use in California. Confirm state registration and permitted uses for your location and crop before ordering.

Do not apply foliarly within 20 days of copper-based compounds. Signal word CAUTION, causes moderate eye irritation. Always read and follow the label. It is a violation of federal law to use this product in a manner inconsistent with its labeling.