Walnut

Agricultural pest management


Susceptibility of Weeds to Herbicide Control

(Reviewed 8/17, updated 8/17)

In this Guideline: More about weeds in walnut:

Susceptibility of Winter Weeds to Herbicide Control
Customize list of weeds PREEMERGENCE POSTEMERGENCE
DIU NOR ORY OXY PEN SIM TRI 24D* FLU GLY OXY PAR* SET
Mode of Action 7 12 3 14 3 5 3 4 1 9 14 22 1
ANNUAL WEEDS
barley, hare C C C P C C C N C C P C C
bluegrass, annual C C C P C C C N N C P C N
bromegrasses C C C P C C C N C C N C C
canarygrass C C C P C C C N C C N C C
clovers P N N C P C N P N C P P N
cudweeds C C N N N C N P N C P N N
fiddlenecks C C C C C C P P N C C C N
filarees C C N C C C P C N P P P N
groundsel, common P P N C P C N C N C C C N
henbit C P P C C C C C N C C C N
lettuce, miner's C C C C C C C C N C C C N
mustards C C N C N C N C N C P C N
nettles C C P C N C N C N C P C N
oat, wild P P C P P C P N C C N C C
polypogon, rabbitfoot C C C P C C C N C C N C C
radish, wild C P N C N C N P N C P P N
redmaids (desert rockpurslane) C C C C C C C C N C C C N
rocket, London C C N C C C N C N C C C N
ryegrasses C C C P C C C N C C N C C
shepherd's-purse C C N C N C N C N C P C N
sowthistles C P N C N C N C N C P C N
Susceptibility of Spring/Summer Weeds to Herbicide Control
Customize list of weeds PREEMERGENCE POSTEMERGENCE
DIU NOR ORY OXY PEN SIM TRI 24D* FLU GLY OXY PAR* SET
Mode of Action 7 12 3 14 3 5 3 4 1 9 14 22 1
ANNUAL WEEDS
barnyardgrasses C C C P C P C N C C N P C
chickweed, common C C C P C C C P N C P C N
cockleburs P N N P N P C N C C C N
crabgrasses C C C P C N C N C C P C C
cudweeds C C N N C C N P N C P N N
fleabane, hairy C P N P N C N C N C P C N
foxtails C C C N C C C N C C N C C
goosefoot, nettleleaf C C C C P C C C N C P C N
groundcherries N C C C C C N C N C C C N
horseweed P P N P N C N C N C P C N
knotweed, prostrate C C C C C C C N N C P P N
lambsquarters, common C P C C C C C C N C C P N
lettuce, prickly C P N C N C N C N C C C N
lovegrasses C C C P C P C N C C N C C
mallow, little (cheeseweed) P C N C P N P C N P C N N
nettles C C P C C C N C N C P C N
nightshades C C N C P C N C N C C C N
pigweeds C P C C C C C C N C C C N
pineapple-weed P C N C C C P C N C P C N
polypogon, rabbitfoot C C C C C C N C C N C C
puncturevine C C P P P P P C N C P C N
purslane, common C P C C C C C C N C C C N
sandburs C C C N C P C N C C N P C
sowthistles P P N C N C N C N C C C N
speedwells P P C P C P N C P C N
spurges C C P P C C C P N C P C N
thistle, Russian C C P P P C P P N C P P N
witchgrass P C C P C C C N C C N C C
PERENNIAL SEEDINGS
bermudagrass C C C N C P C N C C P C C
bindweed, field N N C C P N C C N C C C N
dallisgrass C C C N C C C N C C N C C
dandelion C N N C N C N C N C C N N
dock, curly C N P C C C C C N C C C N
johnsongrass C C P N P P C P C C N C C
ESTABLISHED PERENNIALS
asparagus N N N N N N N N P N N N
bermudagrass N P N N N N N N P C N P P
bindweed, field N N P N N N P P N P N P N
blackberries N N N N N N N P N C N N N
clovers N N N N N N N P N P N N N
dallisgrass N N N N N N N N P C N N P
dandelion N N N N N N N C N P N N N
dock, curly N N N N N N N C N P N N N
false dandelion N C N N N N N C N P N N N
johnsongrass N N N N N N P N P C N N P
nutsedge, yellow N P N N N N N P N P N N N
onion, wild N N N N N N
poison-oak, Pacific N N N N N N N P N C N N N
sorrel, red N N N N N N N N N P N N N
Ratings Legend
C= control    P= partial control    N= no control    = no information
24D = 2,4-D* (Orchard Master) GLY = glyphosate (Roundup) OXY = oxyfluorfen (Goal) SET = sethoxydim (Poast)
DIU = diuron (Diuron) NOR = norflurazon (Solicam) PAR = paraquat* (Gramoxone) SIM = simazine (Princep)
FLU =fluazifop-p-butyl (Fusilade DX) ORY = oryzalin (Surflan) PEN = pendimethalin (Prowl) TRI = trifluralin (Treflan)
* Permit required from county agricultural commissioner for purchase or use.
1 At rates used for annual weeds, control of perennials is less than expected with high label rates.

[Precautions]

PUBLICATION

[UC Peer Reviewed]

UC IPM Pest Management Guidelines: Walnut
UC ANR Publication 3471

Weeds

J. A. Roncoroni, UC Cooperative Extension, Napa County
B. D. Hanson, Plant Sciences, UC Davis
K. J. Hembree, UC Cooperative Extension, Fresno County
R. B. Elkins, UC Cooperative Extension, Lake County
J. K. Hasey, UC Cooperative Extension, Sutter, Yuba, and Colusa counties

Acknowledgment for contributions to Weeds:
K. K. Anderson, UC Cooperative Extension, Stanislaus County
C. L. Elmore, Weed and Plant Sciences, UC Davis
J. A. Grant, UC Cooperative Extension, San Joaquin County
W. O. Reil, UC Cooperative Extension, Yolo County
T. S. Prather, Plant, Soil, and Entomological Sciences, University of Idaho, Moscow, ID
A. Shrestha, UC IPM Program, Kearney Agricultural Research and Extension Center, Parlier
G. S. Sibbett, UC Cooperative Extension, Tulare County
J. J. Stapleton, UC IPM Program, Kearney Agricultur-al Research and Extension Center, Parlier

Top of page


Statewide IPM Program, Agriculture and Natural Resources, University of California
All contents copyright © 2017 The Regents of the University of California. All rights reserved.

For noncommercial purposes only, any Web site may link directly to this page. FOR ALL OTHER USES or more information, read Legal Notices. Unfortunately, we cannot provide individual solutions to specific pest problems. See our Home page, or in the U.S., contact your local Cooperative Extension office for assistance.

Agriculture and Natural Resources, University of California

Accessibility   Contact webmaster.