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Product: Captan (Wettable Powder 50%)

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Category: Pesticides

Subcategory: Fungicides

Captan (Wettable Powder 50%)

Product Name: Captan (Wettable Powder 50%)
Trade Name: Ortocide
Group: Phthalimides
Mode of Action: Disrupts enzymatic activity involved in metabolism
WHO Toxicity Class: U (Not acutely toxic under normal conditions)
Type: Non-systemic fungicide with preventive and curative effect
Pre-harvest Interval (PHI): 10 days

Crops and Application Rates:

Crop

Disease

Application Rate

Apple

Apple Scab

3 kg per 1000 L water. First spray from silver-tip to bud swelling; subsequent sprays after petal fall as needed

Stone fruits (peach, apricot, cherry, etc.)

Peach Leaf Curl

3–3.5 kg per 1000 L water

Stone fruits

Shot Hole Disease

3 kg per 1000 L water

Grapes

Downy Mildew

3 kg per 1000 L water

Ornamentals, forest trees, non-fruit plants

Damping-off (collar rot)

5.7–10 g/m² mixed into soil up to 10 cm depth

Chickpea

Fusarium Wilt

2 g/L water

Application Management:

  • Use with caution on peach and nectarine due to potential phytotoxicity and leaf drop.
  • Avoid mixing with oils; allow at least 10 days between applications of Captan and oil-based sprays.
  • Do not mix with lime or lime-containing compounds (e.g., Bordeaux mixture) or use alkaline water, as Captan degrades rapidly under such conditions.
  • Avoid use under prolonged cloudy, cool conditions, or with strong wetting agents.