Herbicide label
Priority MTZ Herbicide Label
Priority MTZ (EPA 42750-360) is a Group 5 and 15 metolachlor and metribuzin herbicide labeled for 2 crops. The label lists 45 controlled weeds, plus partial-control, suppression, and partner-control categories.
“PRIORITY® MTZ is a selective herbicide for the control/suppression of annual grasses and selected broadleaf weeds in soybeans.”
Priority MTZ label facts
- Product Priority MTZ
- EPA Reg. No. 42750-360
- Registrant Albaugh, LLC
- Active ingredient metolachlor and metribuzin
- MOA group 5 and 15
Crops on the Priority MTZ label
Priority MTZ is labeled for these 2 crops and uses, per the EPA label.
Weeds on the Priority MTZ label
The Priority MTZ label names 58 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 control45- barley
- ladysthumb
- lambsquarters, common
- mustard
- panicum, fall
- pennycress, field
- sandbur, field
- shattercane
- smartweed, pennsylvania
- sunflower, annual
- waterhemp, common
- volunteer wheat
- barnyardgrass, common
- beggarweed, florida
- bluegrass, annual
- carpetweed
- copperleaf, hophornbeam
- crabgrass
- crowfootgrass
- foxtail
- galinsoga
- goosegrass
- jimsonweed
- johnsongrass, seedling
- junglerice
- knotweed
- mallow, venice
- nightshade, black
- nutsedge, yellow
- pigweed
- purslane, common
- pusley, florida
- red rice
- redweed
- sesbania
- shepherd's-purse
- sicklepod
- sida, prickly
- signalgrass, broadleaf
- smartweed
- spurge, spotted
- starbur, bristly
- velvetleaf
- wild mustards
- witchgrass
Suppression
suppression8- dandelion, common
- horseweed
- ragweed, giant
- cocklebur, common
- kochia
- ragweed, common
- sunflower
- thistle, russian
Controls with a tank-mix partner
needs partner11- buffalobur
- chickweed, common
- dandelion, common
- henbit
- horseweed
- prickly lettuce
- morningglory
- ragweed, giant
- kochia
- ragweed, common
- thistle, russian
Priority MTZ 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.
Priority MTZ FAQ
What weeds does Priority MTZ control?
The Priority MTZ label names 58 weeds, including barley, ladysthumb, common lambsquarters, mustard, fall panicum, and field pennycress. Control varies by crop, rate, and timing.
What crops is Priority MTZ labeled for?
Priority MTZ is labeled for 2 crops and uses, including soybeans and potato.
What is the active ingredient in Priority MTZ? Is it a generic?
Priority MTZ's active ingredient is metolachlor and metribuzin (MOA Group 5 and 15). 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.