Herbicide label

Preface

Preface (EPA 66222-248) is a Group 2 imazethapyr herbicide labeled for 1 crops. The label lists 12 controlled weeds, plus partial-control, suppression, and partner-control categories.

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Official EPA label (PDF)

“PREFACE kills weeds by root and/or foliage uptake and rapid translocation to the growing points.”

— Preface EPA label, Reg. No. 66222-248

Preface label facts

Product Preface
EPA Reg. No. 66222-248
Registrant Makhteshim Agan of North America, Inc. d/b/a ADAMA
Active ingredient imazethapyr
MOA group 2

Crops on the Preface label

Preface is labeled for these 1 crops and uses, per the EPA label.

rice

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Weeds on the Preface label

The Preface label names 30 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 control12

barnyardgrass, common
crabgrass, large
johnsongrass, seedling
red rice
shattercane
signalgrass, broadleaf
morningglory, pitted
morningglory, palmleaf
morningglory, cypressvine
smartweed
nutsedge, species
flatsedge, rice

Suppression

suppression12

sprangletop
alligatorweed
morningglory, entireleaf
morningglory, ivyleaf
dayflower, spreading
morningglory, tall
ducksalad
ammannia, purple
eclipta
texasweed
mexicanweed
waterplantain

Controls with a tank-mix partner

needs partner12

sesbania, hemp
dayflower
ducksalad
eclipta
ammannia, purple
waterplantain
morningglory
cocklebur, common
sprangletop
mexicanweed
redweed
jointvetch

Want the control level for your crop, or to filter 1,700+ labels by any of these weeds? Use the free label filter.

Preface 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.

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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.

Preface FAQ

What weeds does Preface control?

The Preface label names 30 weeds, including common barnyardgrass, large crabgrass, seedling johnsongrass, red rice, shattercane, and broadleaf signalgrass. Control varies by crop, rate, and timing.

What crops is Preface labeled for?

Preface is labeled for 1 crops and uses, including rice.

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

Preface'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.

What's the plant-back interval after Preface?

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 Preface?

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.