Dodine (chemical name: n-Dodecylguanidine acetate) is a systemic, protective, and curative fungicide widely used in agriculture to control fungal diseases, primarily scab, leaf spots, and blossom blight.
It is typically formulated as Wettable Powder (WP) or Soluble Concentrate (SL).
Dodine belongs to the guanidine fungicide group and displays both contact and locally systemic activity on plant surfaces.
✅ Chemical & Physical Properties
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Common Name: Dodine
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IUPAC Name: Dodecylguanidinium acetate
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Chemical Group: Guanidines
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CAS Number: 2439-10-3
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Molecular Formula: C₁₅H₃₂N₄O₂
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Appearance: White/off-white crystalline solid (in pure form)
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Solubility: Moderately soluble in water; high solubility in organic solvents
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Mode of Action:
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Interferes with fungal cell membranes
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Disrupts mitochondrial function
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Provides strong protective and early-curative action
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Stability: Stable under normal storage conditions
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Formulations:
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65% WP (Wettable Powder)
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40–50% SL (Soluble Liquid)
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Emulsifiable formulations in some regions
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✅ Key Biological Properties
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Contact + locally systemic activity
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Strong protective activity
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Some curative effect when applied early
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Good rainfastness after drying
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Effective at low concentrations
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Low phytotoxicity for labeled crops
🚜 Applications & Crop Uses
Dodine is used primarily in fruit orchards and specific nut crops, where it is highly effective against fungal pathogens.
🍎 1. Pome Fruits (Apple, Pear)
Major use worldwide.
Controls:
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Apple scab (Venturia inaequalis)
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Pear scab
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Sooty blotch
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Flyspeck
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Leaf spot diseases
Dodine is often applied:
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Early season (green tip to petal fall)
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As part of a seasonal spray program
🍑 2. Stone Fruits (Peach, Cherry, Apricot, Plum)
Controls:
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Blossom blight (Monilinia spp.)
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Leaf spot
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Brown rot (as part of integrated control)
🌳 3. Nut Crops
Especially pecan.
Controls:
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Pecan scab
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Leaf spot / blight diseases
🍓 4. Berries and Small Fruits
Used in some countries for:
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Strawberry leaf spot
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Blueberry leaf spot diseases
🟢 5. Ornamental Plants
Controls:
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Leaf spot diseases
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Nursery fungal problems
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Early-season blights
💡 Benefits
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Strong activity against scab diseases
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Good persistence
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Rainfast protection
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Works well at low dosage rates
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Useful in fungicide rotation / resistance management
🧪 Mode of Application
Dodine is typically applied through:
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Ground sprayers
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Airblast sprayers (orchards)
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Aerial application (some regions)
