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How to Manage Pests

UC Pest Management Guidelines

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Citrus

Susceptibility of Weeds to Herbicide Control

(Reviewed 9/08, updated 9/08)

In this Guideline: More about weeds in citrus:
Susceptibility of Spring/Summer Weeds to Herbicide Control
Customize list of weeds
ANNUAL WEEDS
barnyardgrass
chickweed, common
cockleburs
crabgrass, large
cudweeds
eveningprimrose, cutleaf
fleabane, hairy
foxtails
goosefoot, nettleleaf
groundcherries
groundsel, common
horseweed
knotweeds
lambsquarters, common
lettuce, prickly
lovegrasses
mallow, little (cheeseweed)
morningglory, annual
mullein, turkey
nettle, burning
nightshades
pigweeds
pineapple-weed
polypogon, rabbitsfoot
puncturevine
purslane, common
sandburs
sowthistles
speedwells
sprangletops
spurge, spotted
thistle, Russian
witchgrass
PERENNIAL WEEDS
bermudagrass (seedling)
bermudagrass (perennial)
bindweed, field (seedling)
bindweed, field (perennial)
dallisgrass (seedling)
dallisgrass (perennial)
johnsongrass (seedling)
johnsongrass (perennial)
nutsedge, yellow
nutsedge, purple
PREEMERGENCE
BRO* DIU* EPT1 FLM ISO1 NAP NOR* ORY OXY1 PEN1 SIM* THI TRI
PCCC—CPCPCPCC
CCCCCCCCPCC—C
CCN——CCNPNC—N
PCCC—CPCPCNCC
CCP—CCCNNNC—N
CP——CPNPPPCCP
CCCCCNPNPNN—N
CCCC—CPCNCNCC
CCCCCCCCCCC—C
CCCCCNCNCNCPP
CNCCCCPN—NCCN
CCCCCNPNPNC—N
CCP—CCCCCCCCC
CCCCCCPCCCC—C
CCCPCCPNC—C—N
PCCC—CPCPCN—C
CPNCCPPPCPP—N
CC—CCPCPCNC—C
CNN——NPN——N—N
CCCCCPCPCNC—P
CCCCCNCNCNC—N
CCCCCCPCCCCPC
CCP—CCCN—NC—N
CCC——CCCP—P—C
CPCC—PCPPPP—P
CCCCCCPCCCCCC
PCCC—CPCN—N—C
PCCPCCPNCNCCN
CNN—CCCP——C—P
NNPP—CCC—CN—C
PNNCCNPPPPNCN
CNPCCPCPPPC—P
CCCP—CPCP—N—C
 
NNCNNCCCCCP—C
NNNNNNPNNNN—N
PCN—CNPPNPCCC
NNN—CNNNNNNPP
CNC—NCNCNCC—C
CNNNNNNNNNN—N
CCCCNCCCNCC—N
PNNNNNCCNNN—N
CNPNNNPNNNNPN
CNPNNNPNNNNPN
POSTEMERGENCE
CAR CLE1 DIQ1 FLU1 GLY MSM*1 OXY1 PAR* SET
NCPCCNNPC
PNCNCCPCN
PNCNNPCNN
NCCCCCPCC
—NCNCNPCN
—NCNCNPCN
PNPNCNPCN
NCPCCPNCC
—NCNCNPCN
CNCNCPCCN
—NCNCN—CN
PNCNCNPCN
—NPNCNPPN
—NCNCNCPN
—NCNCNCCN
NCPCCPNC—
CNCNPNCNN
CNPNCPCPN
—NPCCN—PN
CNPNCNPCN
PNCNCPCCN
—NCNCNCCN
—N—NCN—CN
—C—CCNNCC
—NCNNPPPN
NNCNCPCCN
N—PCCPNP—
NNCNCNCCN
—N—NCN—CN
NNNNCN—CN
PNNNCNPCN
—NPNCNPPN
NCP—CPNC—
 
NCPPCNCPC
NPNPCNNNP
—N—NCNPPN
—N—NPNPNN
NPPNCCCNC
NNNNCCNN—
NCPCCCCCC
NCNNCNNNC
NNPNPCNNN
NNPNPPNNN
 
ANNUAL WEEDS
barnyardgrass
chickweed, common
cockleburs
crabgrass, large
cudweeds
eveningprimrose, cutleaf
fleabane, hairy
foxtails
goosefoot, nettleleaf
groundcherries
groundsel, common
horseweed
knotweeds
lambsquarters, common
lettuce, prickly
lovegrasses
mallow, little (cheeseweed)
morningglory, annual
mullein, turkey
nettle, burning
nightshades
pigweeds
pineapple-weed
polypogon, rabbitsfoot
puncturevine
purslane, common
sandburs
sowthistles
speedwells
sprangletops
spurge, spotted
thistle, Russian
witchgrass
PERENNIAL WEEDS
bermudagrass (seedling)
bermudagrass (perennial)
bindweed, field (seedling)
bindweed, field (perennial)
dallisgrass (seedling)
dallisgrass (perennial)
johnsongrass (seedling)
johnsongrass (perennial)
nutsedge, yellow
nutsedge, purple
Susceptibility of Winter Weeds to Herbicide Control
Customize list of weeds
ANNUAL WEEDS
barley, hare
bluegrass, annual
bromegrass
canarygrass
burclover, California
cudweeds
fiddlenecks
filarees
henbit
miner's lettuce
mustards
nettle, burning
oat, wild
polypogon, rabbitsfoot
radish, wild
redmaids (desert rockpurslane)
rocket, London
ryegrass, Italian
shepherd's-purse
sowthistles
sweetclovers
PREEMERGENCE
BRO* DIU* EPT1 FLM ISO1 NAP NOR* ORY OXY1 PEN1 SIM* THI TRI
CCCP—CCCPCPCC
CCCC—CCCPCPCC
CCCP—CCCPCN—C
CCCP—CCCPCPCC
PCN—PPCNC—C—N
CCP—CCCNNNC—N
CCC—CCCCCCCCC
CCCCCCPCCNCCP
CCCCCPCPCCC—P
CCP——CCCC—C—C
CCNCCPPNCPCPN
CCCCCPCPCNC—P
CPCC—CCPPPN—P
CCC——CCCP—P—C
CCN—CNCNCNP—N
CCC——NCCC—C—C
CCPCCPCNPPP—N
CCCP—CCCPCP—C
CCPC—NCNCPCCN
PCCPCCPNCNCCN
PCN—PPCNCNC—N
POSTEMERGENCE
CAR CLE1 DIQ1 FLU1 GLY MSM*1 OXY1 PAR* SET
NCPCCNPCC
NCPNCCPCN
N——NCPNCN
NCPCCNNCN
—N—NCNPPN
—NCNCNPCN
CNCNCNCCN
—NCNPNCPN
—NCNCNCCN
—N—NCNCCN
PNCNCNCCN
CNPNCNPCN
NCPCCNNPC
———CCPPCC
—N—NCNPPN
—N—NCPCCN
CNCNCNCCN
NCP—CNNC—
PNCNCNPCN
NNCNCNPCN
—N—NCNPPN
 
ANNUAL WEEDS
barley, hare
bluegrass, annual
bromegrass
canarygrass
burclover, California
cudweeds
fiddlenecks
filarees
henbit
miner's lettuce
mustards
nettle, burning
oat, wild
polypogon, rabbitsfoot
radish, wild
redmaids (desert rockpurslane)
rocket, London
ryegrass, Italian
shepherd's-purse
sowthistles
sweetclovers

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

Chemical Legend
BRO* = bromacil (Hyvar)
CAR = carfentrazone (Shark)
CLE1 = clethodim (Select Max)
DIQ1 = diquat (Reglone)
DIU* = diuron (Karmex)
EPT1 = EPTC (Eptam)
FLM = flumioxazin (Chateau)
FLU1 = fluazifop-p-butyl (Fusilade)
GLY = glyphosate (Roundup)
ISO1 = isoxaben (Gallery)
MSM*1 = MSMA
 
NAP = napropamide (Devrinol)
NOR* = norflurazon (Solicam)
ORY = oryzalin (Surflan)
OXY1 = oxyfluorfen (Goal)
PAR* = paraquat (Gramoxone Inteon)
PEN1 = pendimethalin (Prowl)
SET = sethoxydim (Poast)
SIM* = simazine (Princep)
THI = thiazopyr (Visor)
TRI = trifluralin (Treflan)
 

Comments
*   Permit required from county agricultural commissioner for purchase or use.
1   For use on nonbearing citrus only.

[Precautions]

PUBLICATION

[UC Peer Reviewed]

UC IPM Pest Management Guidelines: Citrus
UC ANR Publication 3441
Weeds
A. Shrestha, UC IPM Program, Kearney Agricultural Center, Parlier
N. V. O'Connell, UC Cooperative Extension, Tulare County
Acknowledgment for contributions to Weeds:
T. S. Prather, Department of Plant, Soil and Entomological Sciences (PSES), University of Idaho
D. W. Cudney, Botany and Plant Sciences, UC Riverside

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