Cooperative
Extension
Service


University of Illinois
at
Urbana-Champaign


No. 13/June 19, 1998

Barnyardgrass, crabgrass, woolly cupgrass, foxtail, fall panicum

Table 1. Efficacy of soybean herbicides: Barnyardgrass

I
L
I
N
K
Y
M
O
N
E
O
H
P
A
I
A
K
S
M
I
M
N
W
S
Mean
PPI/
PRE
Dual II9988989EGEGG
E
8.7-GE
Frontier9988989EGEGG
E
8.7-GE
Lasso9988989EGEGG
E
8.7-GE
Prowl9999988
+
EG
E
EGG
E
8.9-E
Treflan9999999EG
E
EGG
E
9.0-E
Command99998
+
98
+
GEGGG8.7-GE
POST
Assure
II
898898
+
9EG
E
GGE8.6-GE
Fusion998-999EG
E
G-E8.8-E
Poast
Plus
9999999
+
EG
E
EGE9.0-E
Select9999999EG
E
EGE9.0-E
Pursuit77677
/
8
68G
E
GFGG7.5-FG
Raptor88878
+
-8-GFGE8.1-G
Roundup999998
+
10G
E
EGGE8.9-E
Scale1
-
9
1
-
9
1
-
9
1
-
10
1
-
10
1
-
9
1
-
10
e
g
f
p
e
g
f
p
e
g
f
p
n
g
f
p
e
g
f
p
n
1-9-
efgpn


Table 2. Efficacy of soybean herbicides: Crabgrass

I
L
I
N
K
Y
M
O
N
E
O
H
P
A
I
A
K
S
M
I
W
S
Mean
PPI/
PRE
Dual II9999999EG
E
EG
E
8.9-E
Frontier9999999EG
E
EG
E
8.9-E
Lasso9999999EG
E
EG
E
8.9-E
Prowl9999999EG
E
EG
E
8.9-E
Treflan9999999EEEG
E
9.0-E
Command89998
+
98
+
G
E
EEG 8.7-GE
POST
Assure
II
898998
+
8EG
E
GE 8.5-GE
Fusion889-98
+
8
+
EG
E
GE 8.5-GE
Poast
Plus
9999989EG
E
GE 8.8-E
Select999998
+
9EG
E
GE 8.8-E
Pursuit77777
/
8
77GFFF 7.2-F
Raptor76-77
/
8
-7-GFF 7.1-F
Roundup9991
0
1
0
8
+
1
0
EEGE 9.0-E

Table 3. Efficacy of soybean herbicides: Woolly cupgrass

ILINMOIAMNWSMean
PPI
/PRE
Dual II777FGF7.3-FG
Frontier777FGF7.3-FG
Lasso777FGF7.3-FG
Prowl989EG F8.5-GE
Treflan989EGF8.5-GE
Command888FFF7.5-FG
POST
AssureII889EFGG8.3-GE
Fusion88-E-G8.2-G
Poast
Plus
999EG G8.8-E
Select999EGG8.8-E
Pursuit555FPFF<6-P
Raptor555-PFF<6-P
Roundup988EGE8.7-GE

Table 4. Efficacy of soybean herbicides: Giant foxtail

I
L
I
N
K
Y
M
O
N
E
O
H
P
A
I
A
K
S
M
I
M
N
W
S
Mean
PPI/
PRE
Dual II9999999EEEGG
E
9.0-E
Frontier9999999EEEGG
E
9.0-E
Lasso9999999EEEGG
E
9.0-E
Prowl99910998
+
EEEGG
E
9.0-E
Treflan99910999EG
E
EGG
E
9.0-E
Command99910899EEEGG8.9-E
POST
Assure
II
999108
+
99
+
EEEGE9.0-E
Fusion999-8
+
99EEE-E9.0-E
Poast
Plus
999108
+
99
+
EEEGE9.0-E
Select99998
+
99
+
EEEGE9.0-E
Pursuit88888
+
88
+
F
G
GGGG8.0-G
Raptor999998
+
8
+
-GEGG
E
8. 7-GE
Roundup9991010910EEEGE9.1-E

Table 5. Efficacy of soybean herbicides: Yellow foxtail

ILINOHMIMNMean
PPI
/PRE
Dual II999EG9.0-E
Frontier999EG9.0-E
Lasso999EG9.0-E
Prowl999EG9.0-E
Treflan999EG9.0-E
Command999GF8.4-GE
POST
Assure
II
878EG8.2-G
Fusion989E-8.8-E
Poast
Plus
999EG9.0-E
Select999EG9.0-E
Pursuit767GG7.4-F
Raptor887GG8.0-G
Roundup999EG9.0-E

Table 6. Efficacy of soybean herbicides: Fall panicum

I
L
I
N
K
Y
M
O
N
E
O
H
P
A
I
A
K
S
M
I
W
S
Mean
PPI/PRE
Dual II999998
+
8
+
EG
E
GG
E
8. 7-GE
Frontier9998988
+
EG
E
GG
E
8. 6-GE
Lasso9999988EG
E
GG
E
8. 6-GE
Prowl9 999999EG
E
EG
E
8.9-E
Treflan9999999EG
E
EG
E
8.9-E
Command99998
+
99G
E
EGG8. 8-GE
POST
Assure
II
9999999EEEE9.0-E
Fusion999-999EEGE8.9-E
Poast
Plus
9999999EG
E
EE9.0-E
Select9999999EG
E
GE9.0-E
Pursuit77677
/
8
78G-FG7. 3-FG
Raptor88-89-8
+
--FG8.1-G
Roundup99910108
+
10EEGE9.0-E