Weed Response to Herbicides
Used in Fruits and Nuts
- Wayne Mitchem, Extension Weed Specialist
BIENNIAL AND PERENNIAL WEEDS
Goal
Fusil ade
Select+
Roundup, Touchdown
Gra mox one*
2,4-D
Poast
Application Method
PRE
PDS
PDS
PDS
PDS
PDS
Time of Year
S
F
S
F
S
F
S
F
S
F
S
F
asters
F
F
P
P
G
E
F
F
F
P
P
bahiagrass
P
P
F
P
F
F
F
F
P
P
F
P
bermudagrass
P
P
G
F
F
G
F
P
P
P
G
P-F
briars
P
P
P
P
P-F
G-E
P
P
F
F
P
P
camphorweed
G
P
P
G
F
P
P
dallisgrass
P
P
F
F
G
G
F
P
P
P
P
P
dogfennel
P
P
G
G
F
P
P
P
horsenettle
P
P
P
P
F
G
P
P
F
P
P
johnsongrass
P
P
G
P
F
G
F
P
P
P
G
F
nutsedge
F
F
P
P
F
G
F
F
P
P
P
plantains
P
P
E
E
F
F
G
G
P
P
wild garlic/onion
P
P
G
G
F
F
G
G
P
P
ANNUAL GRASSES
Goal
Fusil ade
Select+
Roundup, Touchdown
Gra mox one*
2,4-D
Poast
Application Method
PRE
PDS
PDS
PDS
PDS
PDS
Time of Year
S
F
S
F
S
F
S
F
S
F
S
F
barnyardgrass
F
G
E
G
P
P
G
crabgrass
F
G
E
G
P
P
G
crowfootgrass
F
G
E
G
P
P
G
fall panicum
G
E
G
P
P
G
goosegrass
F
G
E
G
P
P
G
johnsongrass (seedling)
E
E
E
P
P
E
ryegrass, annual
P
G
G
G
G
F
G
P
P
E
E
sandbur
P
G
E
G
P
P
G
signalgrass, broadleaf
P
E
E
G
P
P
E
Texas panicum
P
E
E
E
P
P
E
ANNUAL BROADLEAF WEEDS
Goal
Fusil ade
Select +
Roundup, Touchdown
Gra mox one *
2,4-D
Poast
Application Method
PRE
PDS
PDS
PDS
PDS
PDS
Time of Year
S
F
S
F
S
F
S
F
S
F
S
F
bristly starbur
F - G
F
P
G
F G
G
P
chickweed
P
P
G
G
F
G
F
F
P
P
cocklebur
G
P
P
E
G
E
E
P
crotalaria
E
P
P
E
G
G
P
croton, tropic
E
P
P
E
F G
G
P
evening primrose
F
G
P
P
P-F
F
F
F G
F
G
P
P
Florida beggarweed
P
P
E
E
F
P
Florida pusley
E
P
G
F**
F
P
horseweed
P
F
P
P
G-E
G-E
F *
F
G
P
P
jimsonweed
G
P
E
G
E
P
lambsquarters
E
P
G
G
E
P
morningglories
F - G
P
G
G
G
P
pigweeds
E
P
G
G
G
P
prickly lettuce
G
P
P
G
G
F
G
G
G
P
P
prickly sida (teaweed)
E
P
G
F
G
P
G
P
purslane, common
E
P
E
G
E
P
ragweed, common
E
P
G
G
E
E
P
sicklepod
F
P
G
E
E
P
wild radish
G - E
E
P
P
E
E
F
G
G
G
P
P
Key
PRE = Preemergence; PDS = Postemergence Directed Spray;
S = Spring; F = Fall; E = Excellent; G = Good Control; F = Fair Control; P = Poor Control.
*Gramoxone and Rely provide only contact control of many species.
**Gramoxone will control only the seedling stages of Florida pusley.
+ Fusilade and Prism are fluazifop and clethodim, respectively; and have similar activity on most weeds. Weed response also reflects Select herbicide.If no symbol is given, weed does not occur in specific season (spring or fall) or weed response is unknown.