1. Active Ingredient Properties
- Chemical Name: Spinosad (mixture of Spinosyn A & D)
- CAS Number: 168316-95-8
- Origin: Natural fermentation product
- Mode of Action:
- Acts on the insect nervous system
- Targets nicotinic acetylcholine receptors and GABA receptors
- Causes hyperexcitation → paralysis → death
⚙️ 2. Formulation Characteristics (24 SC)
- Formulation Type: Suspension Concentrate (SC)
- Appearance: Off-white to light brown liquid
- Active Content: 240 g/L
- pH (1% solution): Typically 6 – 8
- Density: ~1.05 – 1.10 g/cm³
- Stability:
- Good storage stability
- Sensitive to strong UV (degrades in sunlight over time)
🐛 3. Spectrum of Activity
Effective against a wide range of pests:
- Lepidoptera: Caterpillars, armyworms
- Diptera: Leaf miners
- Thysanoptera: Thrips
- Coleoptera: Some beetles
👉 Particularly strong against:
- Thrips
- Leaf miners
- Fruit borers
- Caterpillars
🌱 4. Key Advantages
- ✅ Bio-based insecticide (eco-friendly)
- ✅ Low toxicity to mammals
- ✅ Selective action (less harmful to beneficial insects when used properly)
- ✅ Short pre-harvest interval (PHI)
- ✅ Compatible with IPM (Integrated Pest Management)
⚠️ 5. Limitations
- ❗ Degrades under strong sunlight (UV sensitive)
- ❗ May be toxic to bees when wet (apply in evening)
- ❗ Resistance risk if overused (rotate with other insecticides)
🌍 6. Environmental & Safety Profile
- WHO Classification: Slightly hazardous (Class III)
- Toxicity:
- Low mammalian toxicity
- Moderate toxicity to aquatic organisms
- Biodegradability: Rapidly biodegradable in soil
🧴 7. Application Features
- Application Method: Foliar spray
- Recommended Timing:
- Early infestation stage
- Late afternoon / evening (to protect pollinators)
- Rainfastness: Good after drying
💡 8. Compatibility
- Compatible with most:
- Fungicides
- Insecticides
- Fertilizers
⚠️ Avoid:
- Strong alkaline mixtures
🧠 SUMMARY
Spinosad 24 SC is a highly effective, bio-based insecticide with a unique mode of action, making it ideal for modern sustainable agriculture and IPM programs. It offers broad-spectrum control, especially against thrips and caterpillars, while maintaining a relatively safe environmental profile. However, proper application timing and resistance management are essential for long-term effectiveness.
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