Emamectin Benzoate vs Abamectin: Which Avermectin Fits?
Both actives come from the avermectin family, but they aren't interchangeable. Here is how they differ and where each one works best.
Two Avermectins With Different Jobs
Emamectin benzoate and abamectin are both macrocyclic lactone insecticides derived from soil actinomycetes. They share a similar core structure, but emamectin benzoate is a semi-synthetic derivative with a methylamino group that changes its behavior on plants and insects.
Abamectin is a mixture of avermectin B1a and B1b. It's widely used as an acaricide and insecticide on many crops. Emamectin benzoate is more selective against lepidopteran larvae, though it also has activity on some mites and other pests. Both act on the insect nervous system by increasing chloride ion flow at glutamate-gated channels.
Side by Side Comparison
| Aspect | Emamectin Benzoate | Abamectin |
|---|---|---|
| Chemical class | Avermectin, semi-synthetic | Avermectin, natural fermentation product |
| Mode of action | GABA and glutamate-gated chloride channel agonist | GABA and glutamate-gated chloride channel agonist |
| Main targets | Lepidopteran larvae, some mites and leafminers | Mites, leafminers, thrips, some lepidopteran larvae |
| Systemic or contact | Translaminar, limited systemic movement | Translaminar, limited systemic movement |
| Typical formulation | SC, WG, EC often in mixtures | EC, SC, WG, often alone or with other miticides |
| Resistance management role | Key rotation partner for caterpillar control | Core acaricide; resistance in mites is common |
| Tank-mix notes | Often mixed with indoxacarb, chlorantraniliprole, or tolfenpyrad | Often mixed with other miticides or insecticides for broader spectrum |
Choosing Between Emamectin and Abamectin
If your main problem is caterpillar larvae like bollworm, leaf roller, or diamondback moth, emamectin benzoate is usually the stronger choice. It's less active on spider mites than abamectin, so don't rely on it alone for mite outbreaks.
Abamectin remains a workhorse for mites and leafminers. It's often the first choice when mites are the primary pest, but resistance in spider mites is widespread. Rotate with other mode-of-action groups.
CHICO offers emamectin benzoate in several ready-made mixtures. ELEMI combines emamectin benzoate 5% with indoxacarb 15% as a 20% SC. SMASH pairs emamectin benzoate 2% with tolfenpyrad 10%. ChoKing mixes emamectin benzoate 4% with chlorantraniliprole 12% as a 16% SC. These formulations target lepidopteran pests while adding a second active for broader control. Check your local label for registered uses.
Common Buyer Questions
Is emamectin benzoate stronger than abamectin?
It depends on the pest. Emamectin benzoate is generally more effective against lepidopteran larvae. Abamectin is usually better for mites and leafminers. Neither is stronger across all pests.
Can I tank mix emamectin benzoate with abamectin?
You can, but it's rarely needed. They share the same mode of action, so mixing them doesn't improve resistance management. It's better to pair one with an insecticide from a different group.
Which one is safer for beneficial insects?
Both are broad-spectrum and can harm beneficials. Emamectin benzoate is often considered slightly less disruptive to some predators, but you should still avoid spraying when pollinators are active.
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