Pesticide
Product Reference
Reference data for fungicides, herbicides, insecticides, and nematicides used in published TPMR efficacy trials. Always read the current product label before use.
Product Type
Insecticide
Insect & arthropod control
Reference Data Only — Always Read the Current Product Label Before Use
Information on this page is provided for general reference purposes and may not reflect the most current label, registration status, approved use sites, application rates, or restrictions for your state or region. Pesticide registrations, use patterns, and label language are subject to change without notice. It is the applicator's legal responsibility to read and follow the current product label in its entirety prior to each use. TPMR assumes no liability for errors, omissions, or decisions made based on this reference data.
Meridian 25WG
Thiamethoxam 25% · Water Dispersible Granule (WDG)
Manufactured by Syngenta · EPA Reg. No. 100-1018
Thiamethoxam
Neonicotinoid (Thianicotinyl)
12 hours
CAUTION
Mode of Action
Nicotinic Acetylcholine Receptor Competitive Modulator
Thiamethoxam is a second-generation neonicotinoid that acts as a pro-insecticide, being rapidly metabolized to clothianidin in treated insects. Both parent compound and metabolite bind to nicotinic acetylcholine receptors, disrupting normal nerve signal transmission and causing insect paralysis and death. Excellent systemic uptake via roots and foliage.
Labeled Insect Targets
Application
Rate Range
0.085 – 0.184
oz / 1,000 sq ft
Interval
Once per season for grubs
days between applications
Resistance Management
Medium resistance risk due to neonicotinoid class. Rotate annually with IRAC Group 28 (diamides) or Group 3A (pyrethroids). Thiamethoxam and imidacloprid share the same mode of action — rotating between neonicotinoids does not reduce resistance pressure.
TPMR Reports Using This Product
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