Small Grains

Agricultural pest management


Chickweed, Stellaria media.

Susceptibility of Weeds to Herbicide Control

(Reviewed 2/07, updated 2/09, pesticides updated 7/16)

In this Guideline: More about weeds in small grains:

Susceptibility of Winter Weeds to Herbicide Control
Customize list of weeds
ANNUAL WEEDS
barley, hare
bluegrass, annual
brome, ripgut
burclover, California
canarygrass, hood
canarygrass, littleseed
chamomile, mayweed
chickweed, common
fiddleneck, coast
filarees
groundsel, common
henbit
knotweed, prostrate
ladysthumb
lettuce, prickly
mallow, little (cheeseweed)
milkthistles
miner's lettuce
mustards
nettle, burning
oat, wild
oxtongue, bristly
pimpernel, scarlet
pineapple-weed
radish, wild
redmaids (desert rockpurslane)
rocket, London
ryegrass, Italian
shepherd's-purse
smartweed, pale
sowthistle, annual
sowthistle, spiny
spurry, corn
stickleafs
tarweeds
 
BRO CAR CHS CLO DIA* FEN GLY MCA* MES PAR* PEN PYR TRI 24D*
N N C N N N N N C P/C+ N N N
N N C N N N N N C P/C+ C N C N
N N C N N N N N P N P N C N
N P C C C N C P N P C
N N C N N C N N C N C N C N
N N C N N C N N C N C N C N
C C C N C N P C N N
N P C P N C N C C P C C N
C C C P N C P P P C N C P
N P P C N P P C P C
P/C+ C P N C C P C N C
N/P+ C C N C C P C C C C C
N C N C N P C N N N C C C
P/C C C N C P P N C C
C C P N P C P C N C C
N P C N C N P P P N N C P
N C N C P P P N C
N C P N C N C C C N
C P C N C N C C C C P C
N C N N C N N N C N
N N C N N C C N C P/C+ C N P N
C C P N P N C
C N C N
C C P N C P C N C C
P P C P N C P/C+ C P/C+ N C C
N C C N C C N C C C
C C C P C N C C C P C C
N N C N N N C N C P/C+ C N C N
C P C P C N C C C P C P C
P/C C C N C P C
C P C P C N C P C N C C
N P C N C N N
N C N N C N C N N
N C N C N N N
C C C N C P C N P
Susceptibility of Spring/Summer Weeds to Herbicide Control
Customize list of weeds
 
ANNUAL WEEDS
barnyardgrass
bassia, fivehook
foxtails (yellow and green)
goosefoot, nettleleaf
knotweed, prostrate
kochia
lambsquarters, common
pigweed, redroot
polypogon, rabbitfoot
spurge, prostrate
starthistle, yellow
sunflowers
thistle, Russian
PERENNIAL WEEDS
bindweed, field (seedling)
bindweed, (mature plant)
buttercup, crowfoot
johnsongrass, (seedling)
johnsongrass, (mature plant)
nutsedge, yellow
smartweed, pale
PREPLANT
(nonselective)
GLY PAR* PYR
C C N
C C
C C N
C C
P P C
C N C
C C C
C C C
C N
C C C
C N
C C C
C P C
 
C P P
P N P
P
C C N
C N N
P N N
C P N
POSTPLANT
(selective)
BRO CAR CHS DIA* FEN MCA* MES PEN 24D*
N N N N C N C N
C C N N C
N N N N C N C N
C P C C N C C
N C C N C N C C
C P C N P P
C C C C N C C C
P C C C N C C C
N N N N N N C N
P C C P N P C
C P C C N C P N C
C P C C N C N C
C C C N P N C
 
P C P N N P C
N P P N N N P
N C N P N P
N N N C N N N
N N N N N N N
N N N N N N N N N
N P N C C

C = control    P = partial control    N = no control    = no information

Chemical Legend
24D = 2,4-D Amine*
BRO = bromoxynil (Buctril)
CAR = carfentrazone (Shark)
CHS = chlorsulfuron (Glean)
CLO = clopyralid (Stinger)
DIA = dicamba* (Banvel, Clarity)
FEN = fenoxaprop (Puma)
 
GLY = glyphosate (Roundup)
MCA = MCPA Amine*
MES = mesosulfuron (Osprey)
PAR = paraquat* (Gramoxone)
PEN = pendimethilin (Prowl H20)
PYR = pyraflufen-ethyl (ET)
TRI = trifluralin (Treflan)

Comments
*   Permit required from county agricultural commissioner for purchase or use.
+   Control varies depending on size of weed at application; the smaller the weed, the better the control.

[Precautions]

PUBLICATION

[UC Peer Reviewed]

UC IPM Pest Management Guidelines: Small Grains
UC ANR Publication 3466

Weeds

W. M. Canevari, UC Cooperative Extension, San Joaquin County
S. D. Wright, UC Cooperative Extension, Tulare County
L. F. Jackson, Agronomy, UC Davis

Acknowledgment for contributions to Weeds:
C. E. Bell, UC Cooperative Extension, San Diego County
H. L. Carlson, UC Cooperative Extension, Siskiyou County
D. W. Cudney, Botany and Plant Sciences, UC Riverside
J. E. Hill, Agronomy, UC Davis
M. J. Smith, UC Cooperative Extension, San Luis Obispo County
R. N. Vargas, UC Cooperative Extension, Madera County

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