Herbicide label

Hamper II

Hamper II (EPA 55467-19) is a Group 15 metolachlor herbicide labeled for 19 crops. The label lists 42 controlled weeds, plus partial-control, suppression, and partner-control categories.

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Official EPA label (PDF)

“Hamper II Herbicide is a selective herbicide for use as a preplant surface-applied, preplant incorporated, or preemergence treatment in water or fluid fertilizer for control of most annual grasses and certain broadleaf weeds in labeled crops.”

— Hamper II EPA label, Reg. No. 55467-19

Hamper II label facts

Product Hamper II
EPA Reg. No. 55467-19
Registrant Tenkoz Inc
Active ingredient metolachlor
MOA group 15

Crops on the Hamper II label

Hamper II is labeled for these 19 crops and uses, per the EPA label.

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Weeds on the Hamper II label

The Hamper II label names 82 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 control42

amaranth, palmer
amaranth, powell
barnyardgrass, common
bentgrass
bluegrass, annual
bluegrass, kentucky
bluegrass, roughstalk
brome, california
brome, downy
carpetweed
crabgrass, large
crabgrass, smooth
crowfootgrass
cupgrass, prairie
cupgrass, southwestern
fine fescue
rattail fescue
fescue, tall
foxtail, bristly
foxtail, giant
foxtail, green
foxtail, millet
foxtail, yellow
galinsoga, hairy
galinsoga, smallflower
goosegrass
nightshade, eastern black
nutsedge, yellow
orchardgrass
panicum, fall
pigweed, prostrate
pigweed, redroot
pigweed, smooth
pigweed, tumble
pusley, florida
red rice
ryegrass, italian
ryegrass, perennial
signalgrass, broadleaf
dayflower, benghal
waterhemp, common
witchgrass

Partial control

partial12

beggarweed, florida
cupgrass, woolly
eclipta
johnsongrass, seedling
millet, wild-proso
nightshade, hairy
panicum, texas
purslane, common
sandbur, field
sandbur, southern
shattercane
sorghum, volunteer

Controls with a tank-mix partner

needs partner28

bindweed, field
cocklebur, common
coffeeweed
groundcherry
jimsonweed
junglerice
kochia
lambsquarters
mallow
mallow, venice
morningglory
mustard
mustard, wild
wild oats
panicum, browntop
ragweed, giant
sesbania, hemp
sicklepod
sida, prickly
smartweed
spurge, annual
spurge, hyssop
spurge, nodding
spurge, prostrate
spurge, spotted
starbur, bristly
stinging nettle
velvetleaf

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Hamper II 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.

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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, AZ, CA, CO, CT, DE, FL, GA, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, VA, VT, WA, WI, WV, and WY.

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.

Hamper II FAQ

What weeds does Hamper II control?

The Hamper II label names 82 weeds, including palmer amaranth, powell amaranth, common barnyardgrass, bentgrass, annual bluegrass, and kentucky bluegrass. Control varies by crop, rate, and timing.

What crops is Hamper II labeled for?

Hamper II is labeled for 19 crops and uses, including field corn, soybeans, cotton, sunflower, and potato.

What is the active ingredient in Hamper II? Is it a generic?

Hamper II's active ingredient is metolachlor (MOA Group 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 Hamper II?

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.

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Can I tank-mix Hamper II?

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.