Spinosad is a naturally derived insecticide widely recognized for its powerful effect on a broad spectrum of pests, while maintaining low toxicity to humans, animals, and beneficial insects when used appropriately. It’s highly favored in both conventional and organic farming due to its unique mode of action and eco-friendly profile.
Name: Spinosad
Active Ingredient Source: Saccharopolyspora spinosa (a soil-dwelling actinomycete bacterium)
CAS Number: 168316-95-8 (Spinosyn A), 131929-60-7 (Spinosyn D)
Formulation: SC (suspension concentrate), EC (emulsifiable concentrate), granules
Appearance: Amber-colored liquid
✅ Organic-certified (OMRI-listed)
Target-specific: Controls thrips, leafminers, caterpillars, and beetles
Fast-acting and systemic-like translaminar movement
Low impact on bees if applied responsibly
Minimal environmental persistence
Crop | Target Pests | Application Method |
---|---|---|
Fruits & vegetables | Thrips, caterpillars, fruit flies | Foliar spray |
Leafy greens | Leafminers, loopers | Foliar spray or soil drench |
Greenhouse crops | Whiteflies, beetles | Misting/spray systems |
Stored grains | Insect larvae and beetles | Dust or grain treatment |
Mode of Action
Spinosad works by overactivating the insect’s nervous system through nicotinic acetylcholine and GABA receptor interference. It causes continuous muscle contractions, leading to paralysis and death—typically within 24–48 hours.
☘️ Derived from natural fermentation – safe and eco-friendly
Compatible with integrated pest management (IPM)
Low risk of residue build-up or resistance with rotation
Flexible application: can be sprayed, drenched, or used in bait
Ideal for organic and high-value specialty crops
️ Breaks down rapidly in UV light – may require frequent applications
Toxic to bees if applied when they are actively foraging – timing is critical
Resistance can develop with overuse – rotate with different insecticide classes
Q: Can Spinosad be used in organic farming?
A: Yes, it is OMRI-listed and approved for use in certified organic production.
Q: How soon can crops be harvested after application?
A: Most crops have a short pre-harvest interval (PHI), often just 1 day.
Q: Is Spinosad safe for humans and pets?
A: It has low mammalian toxicity and is considered safe when used as directed.
Spinosad strikes a unique balance between high efficacy and environmental responsibility. As demand for organic and sustainable agriculture grows, this bio-insecticide is set to remain a cornerstone in pest management programs across the globe.