Herbicide label
Priority MTZ
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.
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“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.
Need the rate or timing for one of these? Filter every label by your crop, free.
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
- barnyardgrass, common
- beggarweed, florida
- bluegrass, annual
- carpetweed
- copperleaf, hophornbeam
- crabgrass
- crowfootgrass
- foxtail
- galinsoga
- goosegrass
- jimsonweed
- johnsongrass, seedling
- junglerice
- knotweed
- ladysthumb
- lambsquarters, common
- mallow, venice
- mustard
- nightshade, black
- nutsedge, yellow
- panicum, fall
- pennycress, field
- pigweed
- purslane, common
- pusley, florida
- red rice
- redweed
- sandbur, field
- sesbania
- shepherd's-purse
- shattercane
- sicklepod
- sida, prickly
- signalgrass, broadleaf
- smartweed
- smartweed, pennsylvania
- spurge, spotted
- starbur, bristly
- sunflower, annual
- velvetleaf
- waterhemp, common
- volunteer wheat
- wild mustards
- witchgrass
Suppression
suppression9- cocklebur, common
- dandelion, common
- horseweed
- kochia
- ragweed, common
- ragweed, giant
- sunflower
- thistle, russian
- velvetleaf
Controls with a tank-mix partner
needs partner21- buffalobur
- chickweed, common
- dandelion, common
- henbit
- horseweed
- jimsonweed
- kochia
- lambsquarters, common
- prickly lettuce
- morningglory
- mustard
- pigweed
- ragweed, common
- ragweed, giant
- shepherd's-purse
- sida, prickly
- smartweed, pennsylvania
- sunflower, annual
- thistle, russian
- velvetleaf
- waterhemp, common
Want the control level for your crop, or to filter 1,700+ labels by any of these weeds? Use the free label filter.
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 and your soil texture.
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, the rotational crop, and your state, region, and rainfall — some intervals differ in AL, AR, FL, GA, LA, MO, MS, NC, OK, SC, TN, TX, and VA.
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, common barnyardgrass, florida beggarweed, annual bluegrass, carpetweed, and hophornbeam copperleaf. 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.
What's the plant-back interval after Priority MTZ?
It depends on your rotational crop, application rate, and region, so the label gives a table, not one number. Build a program and FieldMarshal gives you the exact interval for your rotation from the label line, so you can verify it.
Build a program →Can I tank-mix Priority MTZ?
It depends on your target weeds, crop stage, and which partners the label approves. Build a program and FieldMarshal checks the label for approved partners and gives the condition on each, so you can verify it.
Build a program →Plan in minutes, not hours.
Start with Priority MTZ and let FieldMarshal build a defensible herbicide program for your field, every product, rate, and plant-back cross-referenced and checked against the label.
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Sources
Last updated 2026-07-14.