Agriculture: Rice Pest Management Guidelines

Susceptibility of Weeds to Herbicide Control

  BEN BEZ/HAL BIS CAR CLO CYH HAL ORT PEN PEO PNX PRO* PRO*/HAL THI* THI/ IMA TRI
Mode of Action 2 27/2 2 14 13 1 2 2 3 2 2 7 7/2 8 8/2 4
ANNUAL GRASSES
barnyardgrass N C C1 N C1 C1 N P1 C C1 C1 C1 C1 C1 C1 N
sprangletop, bearded N C N N C1 C1 N N P N N N N C C N
watergrass, early N C C1 N C1 C1 N P1 P1 C1 C1 C1 C1 C1 C1 N
watergrass, late N P C1 N C1 C1 N P1 P1 C1 C1 C1 C1 C1 C1 N
ANNUAL BROADLEAVES/SEDGES
arrowhead, California C1 C C1 C N N C1 C1 N C1 C P C1 N C1 N
bulrush, ricefield C1 C P1 C N N C1 C1 N C1 P1 P1 C1 N P1 C
ducksalad C C C P N N C N C C P C N C N
redstems C1 P P1 C N N C1 C1 N C1 P1 P C1 N P1 C
sedge, smallflower umbrella C1 C P1 C N N C1 C1 P C1 C1 C1 C1 C1 C N
PERENNIALS
arrowhead, Gregg N C N N N N C1 N N C1 N N N
monochoria (pickerelweed) N C C P N N C C N C C P C N C N
C= control P= partial control N= no control = no information
BEN = bensulfuron (Londax) PEN = pendimethalin (Prowl H2O)
BEZ/HAL = bensulfuron/halosulfuron (Butte) PEO = penoxsulam (Granite SC)
BIS = bispyribac-sodium (Regiment) PNX = penoxsulam (Granite GR)
CAR = carfentrazone-ethyl (Shark H2O) PRO = propanil* (Stam, Superwham)
CLO = clomazone (Cerano) PRO/HAL =propanil/halsulfuron (RiceEdge)
CYH = cyhalofop butyl (Clincher) THI = thiobencarb* (Abolish, Bolero Ultramax)
HAL = halosulfuron (Sandea) THI/IMA = thiobencarb/imazosulfuron (League MVP)
ORT = orthosulfumaron (Strada) TRI = triclopyr (Grandstand)
1 Resistance known to occur. For more information on herbicide resistance by mode of action, see the California Rice Weed Herbicide Susceptibility Chart at UC Rice Online.
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Text Updated: 06/19