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Pest Management Guidelines

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Susceptibility of Weeds in Peppers to Herbicide Control

(Reviewed 12/09, updated 12/09)

In this Guideline:

How to customize
Winter weeds
Spring & summer weeds
Legends
Publication
Glossary

More about weeds in peppers:

Susceptibility of Winter Weeds in Peppers to Herbicide Control

Customize LIST OF WEEDS

ANNUAL WEEDS

barley, hare

bluegrass, annual

canarygrass

burclover, California

crabgrasses

cudweeds

fiddlenecks

filarees

foxtails

henbit

knotweed, common

lettuce, prickly

London rocket

miner"s lettuce

mustards

nettles

oats, wild

pineapple-weed

polypogon, rabbitfoot

radish, wild

redmaids (desert rockpurslane)

ryegrass

shepherd's-purse

sowthistles

sweetclover

BEFORE PLANTING
CAR	OXY	PAR*	PEL	GLY
N	P	P	—	C
N	P	P	C	C
N	P	P	—	C
—	P	P	—	P
N	N	C	—	C
—	N	N	—	C
C	C	P	C	C
—	C	P	P	P
N	N	C	—	C
—	C	C	—	C
—	P	P	C	P
—	C	P	—	C
C	C	C	C	C
—	C	C	—	C
P	C	C	C	C
C	C	C	—	P
N	P	P	—	C
—	P	P	—	C
N	P	C	—	C
P	C	P	—	C
—	C	C	—	C
N	N	P	—	C
P	P	C	C	C
N	C	C	—	C
N	P	P	—	P

PREEMERGENCE OR PREPLANT INCORPORATED
MEO	MET*	NAP	BEN	TRI
P	C	C	P	C
C	C	C	C	C
C	C	C	C	C
—	P	P	N	N
C	C	C	C	C
N	P	P	N	N
N	C	C	N	C
N	C	C	N	P
C	C	C	C	C
—	C	P	N	P
N	C	C	C	C
N	C	C	N	N
N	C	P	N	N
—	C	C	P	C
N	C	P	N	N
C	C	P	N	P
N	C	C	N	P
—	C	P	N	N
C	C	C	C	C
N	C	P	N	N
—	C	N	P	C
C	C	C	P	C
P	C	P	N	N
P	C	C	N	N
—	N	P	N	N

AFTER PLANTING
CAR	CLE	HAL	PEL	PEN	SET
N	C	—	—	C	P
N	C	N	C	C	N
N	C	—	—	C	C
—	—	—	—	—	N
N	C	—	—	C	C
—	N	—	—	N	N
C	N	—	C	C	N
—	N	—	P	N	N
N	C	—	—	C	C
—	N	—	—	C	N
—	N	—	C	C	N
—	N	P	—	N	N
C	N	—	C	P	N
—	—	—	—	—	N
P	N	P	C	P	N
C	N	P	—	N	N
N	C	—	—	P	C
—	N	—	—	N	N
N	—	—	—	C	C
P	N	P	—	N	N
—	—	—	—	—	N
N	C	—	—	C	C
P	N	C	C	P	N
N	N	P	—	N	N
N	—	N	—	—	N

Susceptibility of Spring & Summer Weeds in Peppers to Herbicide Control

Customize LIST OF WEEDS

ANNUAL WEEDS

barnyardgrass

bromegrasses

chickweed, common

cockleburs

cudweeds

dodder

fescue, tall

fleabane, hairy

goosefoot, nettleleaf

groundcherries

groundsel, common

horseweed, common

knotweed, common

lambsquarters, common

lettuce, prickly

mallow, little (cheeseweed)

nettles

nightshades

pigweeds

polypogon, rabbitfoot

puncturevine

purslane, common

sandburs

sowthistles

speedwells

spurges

thistle, Russian

witchgrass

PERENNIAL WEEDS

bermudagrass (seedling)

bermudagrass (established)

bindweed, field (seedling)

bindweed, field (established)

johnsongrass (seedling)

johnsongrass (established)

nutsedge, purple

nutsedge, yellow

BEFORE PLANTING
CAR	OXY	PAR*	PEL	GLY
N	P	P	C	C
N	P	C	P	C
P	N	C	C	C
P	P	C	—	C
—	N	N	—	C
P	N	N	N	C
N	P	C	—	C
N	P	C	P	C
—	C	C	—	C
C	C	C	—	C
—	C	C	C	C
N	P	P	—	C
—	P	P	C	P
—	C	P	P	C
—	C	P	—	C
C	C	N	C	P
C	C	P	—	P
C	C	C	—	C
C	C	C	P	C
N	P	C	C	C
—	P	C	—	C
N	C	C	C	C
N	N	P	—	C
N	C	P	—	C
N	C	C	—	C
—	P	C	—	C
—	P	P	C	C
N	P	C	—	C

N	P	P	—	C¹
N	N	P	N	C¹
C	N	P	—	C
P	N	N	N	P
N	N	C	—	C¹
N	N	N	N	C¹
N	N	N	N	P¹
N	N	N	N	P¹

PREEMERGENCE OR PREPLANT INCORPORATED
MEO	MET*	NAP	BEN	TRI
C	C	C	C	C
—	C	C	C	C
C	C	C	C	C
—	P	C	N	N
N	P	P	N	N
N	—	N	N	C
—	C	C	C	C
N	C	N	N	N
P	C	C	P	C
C	C	N	N	N
N	C	P	N	N
N	C	N	N	N
N	C	C	P	C
P	C	C	C	C
N	C	C	N	N
P	P	P	N	N
C	C	P	N	P
C	C	N	N	N
C	C	C	C	C
C	C	C	C	C
—	C	P	N	P
C	C	C	C	C
C	C	C	C	C
P	C	C	N	N
—	C	C	N	P
N	C	N	N	N
P	C	P	N	P
—	C	C	P	C

N	C	C	C	C
N	P	N	N	N
N	P	N	N	P
N	P	N	N	P
C	C	C	C	C
N	P	N	N	N
N	P	N	N	N
P	C	N	N	N

AFTER PLANTING
CAR	CLE	HAL	PEL	PEN	SET
N	C	P	C	C	C
N	C	—	P	C	P
P	N	C	C	C	N
P	N	P	—	N	N
—	N	—	—	N	N
P	N	—	N	P	N
N	—	—	—	—	P
N	N	—	P	N	N
—	N	—	—	C	N
C	N	—	—	N	N
—	N	P	C	N	N
N	N	—	—	N	N
—	N	—	C	C	N
—	N	N	P	C	N
—	N	C	—	N	N
C	N	—	C	P	N
C	N	P	—	N	N
C	N	N	—	N	N
C	N	P	P	C	N
N	—	—	C	C	C
—	N	—	—	P	N
N	N	P	C	C	N
N	C	—	—	C	C
N	N	P	—	N	N
N	—	—	—	—	N
—	N	—	—	P	N
—	N	—	C	P	N
N	—	—	—	—	N

N	C	N	—	C	C
N	P	N	N	N	P
C	N	—	—	P	N
P	N	—	N	N	N
N	C	—	—	C	C
N	C	—	N	N	C
N	N	C	N	N	N
N	N	C	N	N	N

Ratings Legend
C	= control		P	= partial control		N	= no control		—	= no information

Chemical Legend

BEN = bensulide (Prefar)

CAR = carfentrazone (Shark)

CLE = clethodim (Select Max)

GLY = glyphosate (Roundup)

HAL = halosulfuron (Sandea)

MEO = S-metolachlor (Dual Magnum)

MET = metam sodium* (various trade names)

NAP = napropamide (Devrinol)

OXY = oxyfluorfen (GoalTender)

PAR = paraquat* (Gramoxone Inteon)

PEL = pelargonic acid (Scythe)

PEN = pendimethalin (Prowl H2O)

SET = sethoxydim (Poast)

TRI = trifluralin (Treflan)

Comments
^* Permit required from county agricultural commissioner for purchase or use.
¹ Treatment must occur year before planting; not when peppers are in field.

PUBLICATION

UC IPM Pest Management Guidelines: Peppers
UC ANR Publication 3460

Weeds

R. F. Smith, UC Cooperative Extension, Monterey County
O. Daugovish, UC Cooperative Extension, Ventura County
Acknowledgment for contributions to Weeds:
C. E. Bell, UC Cooperative Extension, Imperial County
W. T. Lanini, Weed Science/Plant Sciences, UC Davis

Statewide IPM Program, Agriculture and Natural Resources, University of California
All contents copyright © 2013 The Regents of the University of California. All rights reserved.

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