Agriculture: Almond Pest Management Guidelines

Susceptibility of Weeds in Almond to Herbicide Control

Susceptibility of Winter Weeds in Almond to Herbicide Control

PREEMERGENCE POSTEMERGENCE
FLM ISO ORY OXY PEN RIM SIM TRI GLU GLY OXY PAR* RIM 24D*
Mode of Action1 14 21 3 14 3 2 5 3 10 9 14 22 2 4
ANNUAL WEEDS
barley, hare N C P C C C   C P C N
bluegrass, annual N C P C C C C C C P C C N
bromegrasses N C P C C C C C C N C C N
clovers C P N C P C C N C C P P C P
cudweeds C N N N C C N C C P N C P
filarees C C N C C C C P C P C P C C
groundsel, common C C N C P C C N C C C C C C
henbit C C P C C C C C C C C C C C
mallow, little C C N C P N P C P C N N
mustards C C N C N C N C C P C C
nettle, burning C C P C N N C N C C P C N C
oat, wild C N C P P P C P C C N C P N
radish, wild C N C N C C N C C P P C P
redmaids (desert rockpurslane) C C C C C C C C C C C C
rocket, London C N C C C C N C C C C C C
ryegrasses N C P C C C C C2 N C C N
shepherd's–purse C C N C N C C N C C P C C C

Susceptibility of Spring & Summer Weeds in Almond to Herbicide Control

PREEMERGENCE POSTEMERGENCE
FLM ISO ORY OXY PEN RIM SIM TRI GLU GLY OXY PAR* RIM SET 24D*
Mode of Action1 14 21 3 14 3 2 5 3 10 9 14 22 2 1 4
ANNUAL WEEDS
barnyardgrass N C P C C P C   C C N P C C N
chickweed, common C C C P C C C C C C P C C N P
crabgrasses P N C P C C N C C C P C C C N
fleabane, hairy C C N P N C C N C C1 P P C N C
foxtails N C N C C C C C C N C C C N
goosefoot, nettleleaf C C C C P P C C C C P C P N C
horseweed C C N P N C C N C C1 P P C N C
junglerice C C P C P C C1 N P C N
knotweed, common C C C C C P C C P P P P P N N
lambsquarters, common C C C C C P C C C C C P P N C
lettuce, prickly C C N C N C C N C C C P C N C
mallow, little C C N C P C N P C P C N C N N
nettle, burning C C P C C N C N C N P P N N N
nightshades C C N C P C C N C C C C C N N
pigweeds C C C C C C C C C C C C C N N
puncturevine C P P P P P P C C P C P N N
purslane, common C C C C C C C C C C C C C N N
sandburs N C N C N C C N P C C
sowthistles C C N C N C C N C C C P C N N
sprangletops N P P N P P P C C P P P P N
thistle, Russian C P P P N C P C C P C N N N
PERENNIAL SEEDLINGS
bermudagrass N C N C N P C   C C P C N C N
bindweed, field C C C P P N C C C C C P N C
dallisgrass N C N C C C C C N N N N
dandelion C N C N C C N C C C N C N C
dock, curly C P C C P C C C C C C P N C
johnsongrass C N P N P C P C C C N C C C P
PERENNIAL PLANTS
bermudagrass N N N N N N N   P C N P N P N
bindweed, field N C P N N P N P P P N P P N P
blackberries N N N N N C N N N P
dallisgrass N N N N N N P C N N P N
dandelion C N N N P N N P N N P N C
dock, curly N N N N N N N P N N N N C
johnsongrass C N N N N P N P P C N N P P N
nutsedge, yellow N N N N P N N P P N N P N P
Ratings Legend
C= control P= partial control N= no control = no information
Chemical Legend
FLM = flumioxazin (Chateau) PAR = paraquat* (Gramoxone)
GLU = glufosinate (Rely) PEN = pendimethalin (Prowl H20)
GLY = glyphosate (Roundup) RIM = Rimsulfuron (Matrix)
ISO = isoxaben (Trellis) SIM = simazine (Princep)
ORY = oryzalin (Surflan) TRI = trifluralin (Treflan)
OXY = oxyfluorfen (Goal) 24D = 2,4-D* (Orchard Master)
*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.
2 Resistance to glyphosate is appearing.
Text Updated: 08/17