Active ingredient and systemic translocation
Thiamethoxam is a second-generation neonicotinoid (thiamicotinoid) belonging to IRAC Group 4A. It binds irreversibly to nicotinic acetylcholine receptors (nAChR) in insect central nervous systems, disrupting nerve transmissions. Absorbed rapidly by plant roots and green foliage, it moves acropetally via the xylem to protect newly developing foliage.
- Active constituent: Thiamethoxam 25% WG (water dispersible granules)
- Chemical family: Neonicotinoid (IRAC Group 4A)
- Application flexibility: Registered for foliar spray, soil drenching, and seedling root dip
Target crops and major sucking pests
- Paddy (rice): Brown plant hopper (BPH) and green leaf hopper.
- Cotton: Jassids, aphids, thrips, and whiteflies.
- Mustard and vegetables: Aphids in mustard, whiteflies in tomato, and thrips in chili.
- Mango: Mango hopper infesting floral panicles.
Safe spraying practices and pollinator protection
Because neonicotinoids are toxic to honeybees, avoid spraying during active foraging hours or when crops are in full bloom. Mix granules thoroughly in clean water, use personal protective equipment, and strictly observe CIBRC approved label dosages and pre-harvest intervals.
Official source
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Central Insecticides Board & Registration Committee ↗Related on KisanPe
Common questions
What is the active ingredient in Actara?
The active ingredient in Actara is Thiamethoxam 25% WG, a systemic neonicotinoid insecticide.
How does Actara control brown plant hopper (BPH) in rice?
Its xylem-systemic action moves into lower plant tillers where BPH insects feed, disrupting their nervous system upon ingestion.
Why should Actara not be sprayed during crop blooming?
Thiamethoxam is toxic to bees and other pollinators, so spraying during active flowering must be avoided.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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