1. UC IPM
  2. Agriculture
  3. Apricot
  4. Susceptibility of Winter Weeds to Herbicide Control
Agriculture: Apricot Pest Management Guidelines

Susceptibility of Winter Weeds to Herbicide Control

Weeds Pages

  PREEMERGENT POSTEMERGENT
FLM IND ISO NAP NOR ORY OXY PEN PRO RIM TRI   CAR CLE CLO DLI FLU GLY OXY PAR* PYR SET 24D*
Mode of Action1 14 29 21 15 12 3 14 3 3 2 3   14 1 — — 1 9 14 22 14 1 4
ANNUAL WEEDS
barley, hare P C N C C C P C C P C   N C P P C C P P N C N
bluegrass, annual C C N C C C P C C C C N C P P N C P P N N N
brome, downy P C N C C C N C C C C N C P P P C N P N P N
brome, ripgut P C N C C C — C C C C N C P P P C N P N C N
burclover, California — — P P N N C P — — — — — N N N C P P N N —
canarygrass P — N C C C P C C — C N C P P C C P P — C N
chickweed, common C P C C P C N C C — C P N C C N C N C P N P
clovers, perennial — C P P N N P N N — N — N N N N P P P C N P
cudweeds C C P C C N N N N C N — N P P N C P N P N P
fiddlenecks C C C C C C C C C C C C N P P N C C C P N P
filarees C C C C P N C N N C P — N P P P P C P C N P
groundsel, common C P C C P N C N N C N — N P P N C C C C N P
henbit C C C N P P C C C — C — N P P N C C C C N P
lettuce, miner's — C C — C C C — P C C — N C C N C — C P N N
mallow, little C C P P P P C N P C N C N P P N P C N C N N
mustards C C C P P N C N C C N P N C C N C P C C N C
nettle, burning C C C P C P C C P — P C N P P N N P P N N P
oat, wild C C N C P P P P P C P N C P P C C N P P C N
pineapple-weed — — C C P N C N N — N N N P P N C P P N N N
polypogon, rabbitfoot — C N — C C N — — C C N C N N C C — P C C N
radish, wild C C C N P N C N P C N P N P P N C P P C N C
redmaids (desert rockpurslane) — C C — C C C C — C C P N P P N C C C C N C
rocket, London C C C C P N C N C C N C N C C N C C C N N C
ryegrasses P C N C C C N C C C C N C N N C C2 N P P C N
shepherd's–purse C C C P P N C C C C N P N C C N C P C C N C
C= control    P= partial control    N= no control    —= no information

Herbicide Mode of Action1 Herbicide Mode of Action1
CAR = carfentrazone (Shark EW) 14 ORY = oryzalin (Surflan) 3
CLE = clethodim (SelectMax) 1 OXY = oxyfluorfen (GoalTender) 14
CLO = clove oil (Matran II, Burnout II) — PAR = paraquat* (Gramoxone Inteon) 22
DLI = d-limonene (Avenger) — PEN = pendimethalin (Prowl H2O) 3
FLM = flumioxazin (Chateau SW) 14 PRO = pronamide (Kerb) 3
FLU = fluazifop-p-butyl (Fusilade DX) 1 PYR = pyraflufen (Venue) 14
GLY = glyphosate (Roundup) 9 RIM = rimsulfuron (Matrix SG) 2
IND = indaziflam (Alion) 29 SET = sethoxydim (Poast) 1
ISO = isoxaben (Gallery) 21 TRI = trifluralin (Treflan) 3
NAP = napropamide (Devrinol) 15 2,4-D = 2,4-D* (Saber) 4
NOR = norflurazon (Solicam) 12    
*Permit required from county agricultural commissioner for purchase or use.
1Group 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.
2Some populations in California are known to be resistant.
Text Updated: 10/14
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