Herbicide label

Tronido Herbicide Label

Tronido (EPA 91234-168-92735) is a Group 2 imazethapyr herbicide labeled for 9 crops. The label lists 93 controlled weeds, plus partial-control, suppression, and partner-control categories.

“Tronido Herbicide, a soluble liquid herbicide, kills when it is taken up by foliage and/or roots of listed broadleaf and grass weeds and sedges, and is translocated rapidly to growing portions of the weeds, where weed growth is stopped.”

— Tronido EPA label, Reg. No. 91234-168-92735

Tronido label facts

Crops on the Tronido label

Tronido is labeled for these 9 crops and uses, per the EPA label.

Weeds on the Tronido label

The Tronido label names 125 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 control93
  • alligatorweed
  • anoda, spurred
  • buffalobur
  • carpetweed
  • galinsoga
  • poinsettia, wild
  • puncturevine
  • purslane, common
  • pusley, florida
  • sida, prickly
  • starbur, bristly
  • jerusalem artichoke
  • barnyardgrass, common
  • cocklebur, common
  • crabgrass, large
  • crabgrass, smooth
  • cupgrass, woolly
  • foxtail, giant
  • foxtail, green
  • foxtail, yellow
  • jimsonweed
  • johnsongrass, seedling
  • morningglory, entireleaf
  • morningglory, ivyleaf
  • morningglory, pitted
  • morningglory, smallflower
  • morningglory, tall
  • nutsedge, purple
  • nutsedge, yellow
  • pigweed, smooth
  • pigweed, spiny
  • ragweed, common
  • ragweed, giant
  • red rice
  • shattercane
  • signalgrass, broadleaf
  • smartweed, ladysthumb
  • smartweed, pennsylvania
  • spurge, prostrate
  • spurge, spotted
  • sunflower, annual
  • velvetleaf
  • bedstraw, catchweed
  • beet, wild
  • chickweed, common
  • chickweed, mouseear
  • filaree, redstem
  • filaree, whitestem
  • fleabane, rough
  • flixweed
  • goosefoot, nettleleaf
  • henbit
  • knotweed, prostrate
  • miner's lettuce
  • mallow, common
  • mallow, little
  • mustard, black
  • mustard, tumble
  • nettle, burning
  • pennycress, field
  • pepperweed, field
  • pepperweed, virginia
  • radish, wild
  • redmaids
  • rocket, london
  • rocket, yellow
  • rockpurslane, desert
  • smartweed, swamp
  • spurge, petty
  • spurry, corn
  • swinecress
  • tansymustard, green
  • tansymustard, pinnate
  • wartcress, creeping
  • watercress
  • willowleaf, panicle-leaf
  • buckwheat, wild
  • shepherd's-purse
  • thistle, russian
  • devil's claw
  • spurge, toothed
  • foxtail, robust purple
  • foxtail, robust white
  • kochia
  • lambsquarters, common
  • marshelder
  • mustard spp.
  • mustard, wild
  • nightshade, black
  • nightshade, eastern black
  • nightshade, hairy
  • pigweed, redroot
  • sorghum, almum

Suppression

suppression26
  • goosegrass
  • panicum, fall
  • panicum, texas
  • rhizome johnsongrass
  • barley
  • bluegrass, annual
  • brome
  • canarygrass, littleseed
  • hoary cress
  • dandelion
  • dock, broadleaf
  • dock, curly
  • dodder
  • fescue
  • fiddleneck
  • groundsel, common
  • oat, volunteer
  • orchardgrass
  • oxtongue, bristly
  • quackgrass
  • timothy
  • volunteer wheat
  • wild oats
  • mallow, venice
  • sage, barnyard
  • thistle, canada

Controls with a tank-mix partner

needs partner9
  • corn, volunteer
  • junglerice
  • sprangletop, red
  • witchgrass
  • goosegrass
  • panicum, fall
  • panicum, texas
  • pigweed spp.
  • waterhemp, common

Tronido 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.

Tronido FAQ

What weeds does Tronido control?

The Tronido label names 125 weeds, including alligatorweed, spurred anoda, buffalobur, carpetweed, galinsoga, and wild poinsettia. Control varies by crop, rate, and timing.

What crops is Tronido labeled for?

Tronido is labeled for 9 crops and uses, including soybeans, peanut, alfalfa, clover, and chickpea.

What is the active ingredient in Tronido? Is it a generic?

Tronido's active ingredient is imazethapyr (MOA Group 2). 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.