Agriculture: Almond Pest Management Guidelines

Susceptibility of Weeds in Almond to Herbicide Control

Weeds Pages

Weed Management

Susceptibility of Winter Weeds in Almond to Herbicide Control

	FLM	ISO	ORY	OXY	PEN	RIM	SIM	TRI		GLU	GLY	OXY	PAR*	RIM	24D*
	PREEMERGENCE									POSTEMERGENCE
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

	FLM	ISO	ORY	OXY	PEN	RIM	SIM	TRI		GLU	GLY	OXY	PAR*	RIM	SET	24D*
	PREEMERGENCE									POSTEMERGENCE
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.
¹	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.
²	Resistance to glyphosate is appearing.

Text Updated: 08/17