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Agriculture: Grape Pest Management Guidelines

Susceptibility of Weeds to Herbicide Control

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Susceptibility of Spring/Summer Weeds to Herbicide Control
PREEMERGENCE POSTEMERGENCE
DIU FLM IND ISO NAP ORY OXY PEN RIM SIM CAR CLE FLU GLU GLY OXY PAR* SET 24D*
Mode of Action1 7 14 29 21 15 3 14 3 2 5 14 1 1 10 9 14 22 1 4
ANNUAL GRASSES
barnyardgrass C C — N C C P C C P N C C C C N P C N
crabgrasses C C — N C C P C C N N C C C C P C C N
fescues C P — — C C P C C C N P N P C N C N N
foxtails C C — N C C N C C C N C C C C N C C N
lovegrasses C C — N C C P C P P N C C C C N C C N
sandburs C P — N C C N C — P N C C C C N P C N
sprangletops N C — N C C P C P N N C C C C N C C N
witchgrass P P — — C C P C C C — C C P C N C C N
ANNUAL BROADLEAVES
cockleburs C — — — C N C N P C P N N P C C C N C
cudweeds C — — C C N N N N C — N N P C P N N P
fleabane, hairy C P — C N N P N C C N N N C C P C N C
fluvellins P — — — N N P — — P — N N — P P P N —
goosefoot, nettleleaf C C — C C C C P P N — N N P C C C N C
groundcherries C C — C N C C N P C C N N C C C C N C
horseweed P C — C N N P N C C N N N C C P P N C
knotweed, common C — — C C C C C P C — N N P C P P N P
ladysthumb C — — — — — — — — C — N N — C — P N —
lambsquarters, common C C — C C C C C P C — N N P C C P N C
lettuce, prickly C P — C C N C N C C — N N C C C C N C
mallow (cheeseweed) C C — C P P C N C N — N N C P C N N P
nightshades C C — C N N C N C C C N N C C C C N C
pigweeds C C — C C C C C C C — N N C C C C N P
puncturevine C C — C P P C C P P — N N P C C C N C
purslane, common C C — C C C C C C C N N N C C C C N C
smartweed, pale C — — — — — — — — C — N N — C — P N P
speedwells P — — — C P C P N C N N N — C P C N —
starthistle, yellow C — — — P N C N P C N N N P C C P N C
thistle, Russian P C — C P P P P N P — N N C C P C N C
velvetleaf C P — C N P C N P C C N N C C N P N C
willowherb, tall annual C C — P N C C — C C — N N C C N P N C
PERENNIALS (SEEDLINGS)
bermudagrass C N — N C C N C N P N C C C C P C C N
bindweed, field P N — C N P C P P P C N N C C P C N C
dallisgrass C N — N P C N C — C N C C C C N C C N
dandelion C — — C C N C N — C — N N C C C N N C
dock, curly C — — C P P C P P C — N N C C C C N C
johnsongrass C N — N P P N C C P N C C C C N C C N
ESTABLISHED PERENNIALS
asparagus N N — — N N N N — N — N N N P N N N —
bermudagrass N N — N N N N N N N N C P P C N P P N
bindweed, field N N — C N P N N P N P N N P P N P N P
blackberries N N — — N N N N — N — N N N C N N N —
catsear, common N N — — N N N N — N — N N P P N N N —
clover, white N N — C N N N N P N — N N P P N N N P
dallisgrass N N — N N N N N — N N C P P C N N P N
dandelion N N — C N N N N P N — N N P C N N N P
dock, curly N N — N N N N N P N — N N P P N N N P
johnsongrass N N — N N N N N P N N C P P C N N P N
nutsedge, purple N N — N P N N N N N N N N P P N N N N
nutsedge, yellow N N — N N N N N P N N N N P P N N N N
Poison-Oak, Pacific N N — — N N N N — N — N N N C N N N —
sorrel, red N N — — N N N N — N — N N N P N N N —

Susceptibility of Winter Weeds to Herbicide Control
PREEMERGENCE POSTEMERGENCE
DIU FLM IND ISO NAP ORY OXY PEN RIM SIM CAR CLE FLU GLU GLY OXY PAR* SET 24D*
Mode of Action1 7 14 29 21 15 3 14 3 2 5 14 1 1 10 9 14 22 1 4
ANNUAL GRASSES
barley, hare C C — N C C P C C C   N C C C C P C C N
bluegrass, annual C C — N C C P C C C N C N C C P C N N
bromegrasses C P — N C C P C C C N C C C C N C C N
canarygrasses C P — N C C P C — C N C C C C N C C N
oat, wild P P — N C P P P P C N C C C C N C C N
polypogon, rabbitfoot C P — — C C P C C C N C C P C — C C N
ryegrasses C P — N C C P C C C N C C C C N C C N
ANNUAL BROADLEAVES
Chickweeds C C — C C C P C C C   P N N C C P C N P
Burclover, California P P — — P N P N P P — N N C C P P N —
fiddlenecks C — — C C C C C C C C N N P C C C N P
filarees C C — C C N C N C C — N N C P C C N C
groundsel, common N C — C P P C N C C — N N P C C C N C
henbit C C — C P P C C C C — N N C C C C N P
miner's lettuce C — — — C C C C C C — N N C C C C N —
mustards C C — C P N C N C C — N N C C P C N C
nettles C C — C P P C C N C C N N C P C P N P
pineappleweed P — — — C N C N P C N N N C C P P N P
redmaids
(desert rockpurslane)		 C — — — N C C C C C — N N C C C C N —
rocket, London C C — C C P C N C C C N N C C C C N C
Shepherd's-Purse C C — C P N C C C C P N N C C P C N C
sowthistles C P — C C P C N C C N N N C C C C N C
Ratings Legend
C = control P = partial control N = no control — = no information
Chemical Legend
Herbicide Mode
of action 		Herbicide Mode
of action 		Herbicide Mode
of action
CAR = carfentrazone-ethyl (Shark) 14 GLY = glyphosate (Roundup, Touchdown) 9 PAR = paraquat* (Gramoxone SL2.0) 22
CLE = clethodim (Select Max) 1 IND = indaziflam (Alion) 29 PEN = pendimethalin (Prowl, Prowl H20) 3
DIU = diuron (Karmex DF, etc.) 7 ISO = isoxaben (Gallery) 21 RIM = rimsulfuron (Matrix) 2
FLM = flumioxazin (Chateau) 14 NAP = napropamide (Devrinol) 15 SET = sethoxydim (Poast) 1
FLU = fluazifop-p-butyl (Fusilade) 1 ORY = oryzalin (Surflan) 3 SIM = simazine* (Princep) 5
GLU = glufosinate (Rely) 10 OXY = oxyfluorfen (GoalTender) 14 24D = 2,4-D* 4
* Permit required from county agricultural commissioner for purchase or use.
1Mode of action group numbers are assigned by the Weed Science Society of America (WSSA) according to different modes of action. Although weeds may exhibit multiple resistance across many groups, mode-of-action numbers are useful in planning mixtures or rotations of herbicides with different modes of action.

Text Updated: 07/15

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