Herbicide label
M1691 Herbicide Label
M1691 (EPA 524-582) is a Group 4 dicamba herbicide labeled for 8 crops. The label lists 187 controlled weeds, plus partial-control, suppression, and partner-control categories.
“M1691 Herbicide is a postemergence, systemic herbicide which can have moderate residual control on small seeded broadleaf weeds, including waterhemp, lambsquarters and Palmer pigweed, depending on rainfall and soil type.”
M1691 label facts
- Product M1691
- EPA Reg. No. 524-582
- Registrant Bayer CropScience
- Active ingredient dicamba
- MOA group 4
Crops on the M1691 label
M1691 is labeled for these 8 crops and uses, per the EPA label.
Weeds on the M1691 label
The M1691 label names 223 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 control187- alkanet
- alfalfa
- amaranth, palmer
- amaranth, powell
- amaranth, spiny
- jerusalem artichoke
- aster, slender
- aster, spiny
- aster, whiteheath
- bedstraw, catchweed
- bedstraw, smooth
- beggarweed, florida
- bindweed, field
- bindweed, hedge
- blueweed, texas
- buckwheat, tartary
- buckwheat, wild
- buffalobur
- burclover, california
- burcucumber
- burdock
- bursage, woolly-leaf
- buttercup, corn
- buttercup, creeping
- buttercup, roughseed
- buttercup, tall
- buttercup, western field
- campion, bladder
- carpetweed
- carrot, wild
- catchfly, nightflowering
- chamomile, corn
- chervil, bur
- chickweed, common
- chickweed, field
- chickweed, mouseear
- chicory
- clover species
- cockle, corn
- cockle, cow
- cockle, white
- cocklebur, common
- copperleaf, hophornbeam
- cornflower
- croton, tropic
- croton, woolly
- daisy, english
- dandelion
- dock
- dogbane, hemp
- dogfennel
- dragonhead, american
- eveningprimrose, common
- eveningprimrose, cutleaf
- falseflax, smallseed
- fern, bracken
- fleabane, annual
- flixweed
- fumitory
- garlic, wild
- carolina geranium
- goldenrod
- goldenrod, missouri
- goldenweed, common
- goosefoot, nettleleaf
- gromwell
- hawkweed
- hempnettle
- henbane, black
- henbit
- horsenettle
- ironweed
- jacobs-ladder
- jimsonweed
- knapweed, black
- knapweed, diffuse
- knapweed, russian
- knapweed, spotted
- knawel
- knotweed, prostrate
- kochia
- ladysthumb
- lambsquarters, common
- lespedeza, sericea
- miner's lettuce
- prickly lettuce
- mallow, common
- mallow, dwarf
- mallow, venice
- horseweed
- mayweed
- milkweed, climbing
- milkweed, common
- milkweed, honeyvine
- milkweed, western whorled
- morningglory, ivyleaf
- morningglory, tall
- mustard, black
- mustard, blue
- mustard, tansy
- mustard, treacle
- mustard, tumble
- mustard, wild
- stinging nettle
- nightshade, black
- nightshade, cutleaf
- nightshade, silverleaf
- onion, wild
- pennycress, field
- pepperweed, virginia
- pigweed, prostrate
- pigweed, redroot
- pigweed, rough
- pigweed, smooth
- pigweed, tumble
- pineapple-weed
- plantain, bracted
- plantain, broadleaf
- plantain, narrow-leaved
- pokeweed, common
- poorjoe
- poppy, red-horned
- puncturevine
- purslane, common
- pusley, florida
- radish, wild
- ragweed, common
- ragweed, giant
- ragweed, lance-leaf
- ragweed, western
- ragwort, tansy
- redvine
- rocket, london
- rocket, yellow
- rubberweed, bitter
- salsify
- senna, coffee
- sesbania, hemp
- shepherd's-purse
- sicklepod
- sida, prickly
- smartweed, green
- smartweed, pennsylvania
- smartweed, swamp
- snakeweed, broom
- sneezeweed, bitter
- sorrel
- sorrel, red
- sowthistle, annual
- sowthistle, perennial
- sowthistle, spiny
- needles, spanish
- spikeweed, common
- spurge, leafy
- spurge, prostrate
- spurry, corn
- starbur, bristly
- starthistle, yellow
- starwort, little
- sumpweed, rough
- sundrops
- sunflower, annual
- sunflower
- sweetclover
- teasel
- thistle, bull
- thistle, canada
- thistle, milk
- thistle, musk
- thistle, plumeless
- thistle, russian
- thistle, scotch
- toadflax, dalmatian
- trumpetcreeper
- velvetleaf
- vetch
- waterhemlock, spotted
- waterhemp, common
- waterprimrose, creeping
- waterprimrose, winged
- woodsorrel, creeping
- woodsorrel, yellow
- wormwood
- wormwood, absinth
- yankeeweed, louisiana
- yarrow, common
- yellowtops
Suppression
suppression36- aspen
- basswood
- blackberry
- blackgum
- cedar, eastern red
- cherry
- chinquapin
- cottonwood
- creosotebush
- cucumbertree
- dewberry
- grape
- hemlock
- honeylocust
- honeysuckle
- hornbeam
- huckleberry
- huisache
- poison ivy
- maple
- mesquite
- oak
- plum, sand
- poplar
- rabbitbrush
- redcedar, eastern
- rose, mccartney
- serviceberry
- spicebush
- spruce
- sweetgum
- sycamore
- tarbush
- witchhazel
- yaupon
- yucca
M1691 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.
M1691 FAQ
What weeds does M1691 control?
The M1691 label names 223 weeds, including alkanet, alfalfa, palmer amaranth, powell amaranth, spiny amaranth, and jerusalem artichoke. Control varies by crop, rate, and timing.
What crops is M1691 labeled for?
M1691 is labeled for 8 crops and uses, including wheat, barley, sorghum, fallow, and oats.
What is the active ingredient in M1691? Is it a generic?
M1691's active ingredient is dicamba (MOA Group 4). 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.