Herbicide label
Thunder Master Herbicide Label
Thunder Master (EPA 42750-147) is a Group 2 and 9 glyphosate and imazethapyr herbicide labeled for 3 crops. The label lists 74 controlled weeds, plus partial-control, suppression, and partner-control categories.
Thunder Master label facts
- Product Thunder Master
- EPA Reg. No. 42750-147
- Registrant Albaugh, LLC
- Active ingredient glyphosate and imazethapyr
- MOA group 2 and 9
Crops on the Thunder Master label
Thunder Master is labeled for these 3 crops and uses, per the EPA label.
Weeds on the Thunder Master label
The Thunder Master label names 75 weeds and rates each by how the product handles it: full control, partial control, suppression, or control with a tank-mix partner. A weed can fall at more than one level, because control varies by crop, rate, and timing.
Controls
full control74- alligatorweed
- amaranth, palmer
- anoda, spurred
- jerusalem artichoke
- barley
- barnyardgrass, common
- starbur, bristly
- buckwheat, wild
- buffalobur
- burcucumber
- carpetweed
- chickweed
- cocklebur, common
- corn, volunteer non-Roundup Ready
- crabgrass, large
- crabgrass, smooth
- cupgrass, woolly
- eclipta
- fleabane, annual
- fleabane, hairy
- fleabane, rough
- foxtail, giant
- foxtail, green
- foxtail, yellow
- goosegrass
- sesbania, hemp
- horseweed
- jimsonweed
- rhizome johnsongrass
- johnsongrass, seedling
- kochia
- knotweed
- ladysthumb
- lambsquarters, common
- mallow, common
- mallow, little
- marshelder
- morning glory, annual
- mustard spp.
- nightshade, black
- nightshade, eastern black
- nightshade, hairy
- nutsedge, purple
- nutsedge, yellow
- oats
- panicum, browntop
- panicum, fall
- panicum, texas
- pepperweed, virginia
- pigweed, redroot
- pigweed, smooth
- pigweed, spiny
- radish, wild
- ragweed, common
- ragweed, giant
- red rice
- rocket, london
- rocket, yellow
- cereal rye
- shattercane
- shepherd's-purse
- sicklepod
- signalgrass, broadleaf
- smartweed, ladysthumb
- smartweed, pennsylvania
- sorghum, almum
- sprangletop
- spurge, prostrate
- spurge, spotted
- sida, prickly
- velvetleaf
- waterhemp, common
- volunteer wheat
- wild oats
Controls with a tank-mix partner
needs partner1- dogbane, hemp
Thunder Master rates and plant-back
The label answers both with a table, not a single number. Here is what drives each answer.
Application rate
Your rate depends on your crop.
Get the rate for your field: build a program and FieldMarshal gives you the exact per-acre rate for your crop from the label line.
Plant-back and rotation
Your interval depends on your application rate and the rotational crop.
Get the interval for your rotation: build a program and FieldMarshal gives you the exact plant-back for your rotational crop from the label line.
Thunder Master FAQ
What weeds does Thunder Master control?
The Thunder Master label names 75 weeds, including alligatorweed, palmer amaranth, spurred anoda, jerusalem artichoke, barley, and common barnyardgrass. Control varies by crop, rate, and timing.
What crops is Thunder Master labeled for?
Thunder Master is labeled for 3 crops and uses, including field corn, soybeans, and alfalfa.
What is the active ingredient in Thunder Master? Is it a generic?
Thunder Master's active ingredient is glyphosate and imazethapyr (MOA Group 2 and 9). Other products list the same active ingredient; rates, formulations, and labeled crops differ — verify each on its own label.
Sources
Last updated 2026-09-30.