Agriculture: Floriculture and Ornamental Nurseries Pest Management Guidelines

Susceptibility of Weeds to Herbicide Control

  PREEMERGENCE
  DIH DIM D/P FLM IND ISO I/T MCH NAP ORY O/O OXA OXY O/P PEN PRD TRI
Mode of Action 14 15 15/3 14 29 21 21/3 15 15 3 3/14 14 14 14/3 3 3 3
ANNUAL WEEDS
barnyardgrass C C C C C N C C C C C C P C C C C
bittercress, lesser-seeded C C P P P C C C C P P P
bluegrass, annual C C C N C C C C C C P C C C C
burclover, California C C C N N N C N C C N N N
chickweed, common P C C C C C C C C C N P C C C C
crabgrasses P C C P C N C C C C C C N C C C C
cudweeds C C C C N P N C C C C N N N
filarees C C C C N C P C C C C N N N
fleabane C C C P P N N N P P P P N N N
goosefoot, nettleleaf C C C C C P C C C C C C C C C
groundsel, common C C P C C N C P C P C C N N N
henbit C C C C C N N C C C C C C C C
horseweed C C C P P N P N P P P P N N N
junglerice C N C C C C C C P C C C C
lambsquarters, common C C C C C C C P C C C C C C C C C
lettuce, prickly C P C C N C P C P C C N N N
mallow, little (cheeseweed) P C C C C N P P C C C C P P P
mustard C C C C N P N C C C C N N N
nettle, stinging C C C C C C C C P P C C C C P P P
nightshade, black C P P C C C C C N N C C C C N N N
nightshade, hairy C P P C C C C C N N C C C C N N N
pearlwort C C C P C C C N P C C C C
pigweeds P C C C C C C C C C C C C C C C
purslane, common C C C C C C C C C C C C C C C C C
radish, wild C C C N N N C C C C N N N
rocket, London C C C N C N C C C C N N N
shepherd's-purse C C C C P P N C C C C N N N
sowthistle, common C C C C C P C N C C C C N N N
sprangletops C N C C C C C P N C C C C
spurge, prostrate or spotted C C C C C N N C C C C C C C C
spurry, corn C C C C C C C N P C C C C
willowherbs C C P P N N P C P C C N N N
BIENNIAL WEEDS
oxtongue, bristly N N N N N N N N N N N N
PERENNIAL WEEDS
bermudagrass (plant) N N N N N N N N N N N N N N
bermudagrass (seedling) C C N C C C C C P N N C C C
bindweed, field (plant) P N N N N N N N N N P N N N N N
bindweed, field (seedling) C P N C N N P C C C C P P C
buttercup, yellow P P N N N N N N N N N N N N
johnsongrass (plant) N N N N N N N N N N N N N N
johnsongrass (seedling) C C C N C C C C N N N P P C C
nutsedge, yellow P P P P N N N P P N N N N N N N N
nutsedge, purple N N N N P N N N N N N N N N
woodsorrel, creeping (plant) N N N N N N N N N N N N
woodsorrel, creeping (seedling) C C C C N N C C C C C C C C
MISCELLANEOUS
liverwort C P P P P
C= control P= partial control N= no control = no information
DIH = dichlobenil (Casoron) NAP = napropamide (Devrinol)
DIM = dimethenamid-P (Tower) ORY = oryzalin (Surflan)
D/P = dimethenamid/pendimethalin O/O = oryzalin/oxyfluorfen
FLM = flumioxazin (Broadstar, Sureguard) OXA = oxadiazon (Ronstar)
IND = indaziflam (Marengo G) OXY = oxyfluorfen (Goal)
ISO = isoxaben (Gallery) O/P = oxyfluorfen/pendimethalin
I/T = isoxaben/trifluralin PEN = pendimethalin (Pre-M, Pendulum)
MCH = metolachlor (Pennant) PRD = prodiamine (Barricade)
    TRI = trifluralin (Treflan)
  POSTEMERGENCE
  CLE DIQ FLU GLU GLY PAR PEL SET
Mode of Action 1 22 1 10 9 22 26 1
ANNUAL WEEDS
barnyardgrass C C C C C P C C
bittercress, lesser-seeded N P N C C P N
bluegrass, annual C C N C C C C N
burclover, California N P N C C P P N
chickweed, common N C N C C C C N
crabgrasses C P C C C C P C
cudweeds N P N C C N P N
filarees N N N C P P N N
fleabane N N N C C P N N
goosefoot, nettleleaf N N N C C C N N
groundsel, common N N N C C C N N
henbit N N N C C C N N
horseweed N N N C C C N N
junglerice C P C C C P P C
lambsquarters, common N P N C C P P N
lettuce, prickly N N N C C P N N
mallow, little (cheeseweed) N N N P P N N N
mustard N P N C C C P N
nettle, stinging N P N C C P P N
nightshade, black N P N C C C P N
nightshade, hairy N P N C C C P N
pearlwort N N N C C N N
pigweeds N P N C C C P N
purslane, common N C N C C N C N
radish, wild N C N C C P C N
rocket, London N N N C C C N N
shepherd's-purse N P N C C C P N
sowthistle, common N P N C C C P N
sprangletops N N N C C P N N
spurge, prostrate or spotted N C N C C C C N
spurry, corn N P N C C P N
willowherbs N P N C C P P N
BIENNIAL WEEDS
oxtongue, bristly N N N P C N N
PERENNIAL WEEDS
bermudagrass (plant) C N P P C P N P
bermudagrass (seedling) C C C C C C C C
bindweed, field (plant) N N N P P P N N
bindweed, field (seedling) N C N C C C P N
buttercup, yellow N N N P C N N
johnsongrass (plant) C N P P C N N P
johnsongrass (seedling) C C C C C C C C
nutsedge, yellow N N N N P P N N
nutsedge, purple N N N N P P N N
woodsorrel, creeping (plant) N N N P C N N
woodsorrel, creeping (seedling) N C N C C C N
C= control P= partial control N= no control = no information
CLE = clethodim (Envoy) GLY = glyphosate (Roundup Pro)
DIQ = diquat (Reward) PAR = paraquat (Gramoxone)
FLU = fluazifop-p-butyl (Fusilade) PEL = pelargonic acid (Scythe)
GLU = glufosinate (Finale) SET = sethoxydim (Vantage)
Text Updated: 07/20