Tables 9 to 15 (Efficacy of corn herbicides)

Cooperative
Extension
Service

University of Illinois
at
Urbana-Champaign

No. 6/May 1, 1998

Tables 9 to 15 (Efficacy of corn herbicides)

Table 9. Efficacy of corn herbicides: Pigweed--waterhemp

I
A I
L I
N K
S K
Y M
I M
O M
N N
B O
H P
A W
S A
v
g
Soil-applied
Atrazine E 9 9 G 9 G 10
-
10 G 10
-
10 9 9+ G
E 9
Princep - 9 9 - 9 G 10 - - 9 9+ - 9
Python E 9 9 G 9 E - G 9
-
9 9 9 G 9
Hornet - 9 9 G 9 E - G 9
-
9 9 9 - 9
Postemergence
Atrazine E 9 9 E 9 E 10
-
10 G 9
-
9 9 10 E 9
Buctril G 7 7 F 7 F 7
-
6 F
G 6
-
6 7 7 G 7
Buctril
+ Atrazine - 9 - E - G - - 9
-
9 9 9 G
E 9
Laddok
S-12 - 8 - G - G - - 8
-
8 9 9 G 8+
Liberty G 8 8 E 8 G 7
-
6 G 7
-
6 8 8 G 8
Tough - 9 - - - - 9
-
8 G - - 9 G 9
Banvel/
Clarity G
E 9 9 G
E 9 G 9
-
8 G 8
-
7 9 9 G
E 9
Marksman - 9 - E 9 E - - 9
-
9 9 10 E 9
2,4-D G 9 9 E 9 G 9
-
8 G 7
-
8 9 9 G
E 9
Stinger - 4 0 - - P - P - 0 6 N 2
Accent G
E 8 8 - 8 E 8
-
5 G 7
-
7 9 9 G 8
Beacon E 8 7 G 8 E 8
-
5 G 8
-
8 9 9 G 8
Exceed E 9 9 G 9 - - G 9
-
8 9 9 G 9
Lightning - 9 9 E 9 E - G 9
-
6 9 9+ E 9
Permit E 9 9 - 9 E 9
-
5 F
G 9
-
8 9 9 G 9
Hornet E 8 3 F 9 P - F
G 7
-
6 7+ 9 F 8
Resolve - 9 9 E 9 - - - 9
-
9 9 - E 9
Scorpion
III E 9 9 G
E - G - G 9
-
9 9 9 G
E 9

Table 10. Efficacy of corn Herbicides: Common ragweed

I
A I
L I
N K
S K
Y M
I M
O M
N N
B O
H P
A W
S A
v
g
Soil-applied
Atrazine E 9 9 G 9 E 9 G 9 9 10 G 9
Princep - 9 9 - 9 E 9 - - 9 9+ - 9
Python P 8 8 G 9 F - F
G 7 7 8 F
G 8
Hornet - 8 8 G 8 E - G 7 8+ 8+ G
E 8
Postemergence
Atrazine E 9 9 E 9 G 9 G 9 9 9 E 9
Buctril E 9 9 G 9 G 9 G 9 9 7+ G
E 9
Buctril
+ Atrazine - 9 - E 9 E - - 9 9 9 E 9
Laddok
S-12 - 9 - G
E - E - - 9 9 9 G
E 9
Liberty E 9 9 G 9 E 8 G 9 9 9 G
E 9
Tough - 6 - - - - 6 P 9 - 7 F 6
Banvel/
Clarity G
E 9 9 G 9 G 10 G 8 9 9 G 9
Marksman - 9 - E - E - - 9 9 9+ E 9
2,4-D G 9 9 E 9 G 9 G 7 9 9 G 9
Stinger - 9 9 - - G - G - 9 9+ G 9
Accent P 4 5 - 2 P 2 P 1 0 6 P 4
Beacon G 9 9 E 9 E 8 G 9 9 9 G 9
Exceed G
E 9 9 E 9 - - - 9 9 9 G
E 9
Lightning - 7 7 G
E 7 F - G 7 7 7 E 7
Permit G
E 8 8 - 8 G 8 G 9 8 9 G
E 8
Hornet G
E 8 8 E 8 E - G 8 9 9 G 8
Resolve - 8 8 G 8 - - - 8 9 - G
E 8
Scorpion
III G
E 9 9 E - G - G 8 9 9 G 9

Table 11. Efficacy of corn herbicides: Giant ragweed

IL IN KY MI MO OH PA WS Avg
Soil-applied
Atrazine 8 8 8 G 8 8 8 FG 8
Princep 8 9 7 F 7 7 7 - 7
Python 4 5 7 F - 5 N P 5
Hornet 7 6 6 G - 7+ 8 F 7
Postemergence
Atrazine 8 8 8 G 8 8 8 EG 8
Buctril 8 7 8 G 9 8 8 F 8
Buctril
+ Atrazine 9 - 8 E - 9 9 GE 9
Laddok
S-12 8 - - G - 9 8+ G 8
Liberty 8 9 8 G 8 8+ 8+ G 8+
Tough 6 - - - 7 - 7 F 7
Banvel/
Clarity 9 9 8 E 9 9 9 G 9
Marksman 9 - - E - 9 9 GE 9
2,4-D 9 9 9 G 8 9 9 G 8+
Stinger 9 9 - E - 9 9 G 9
Accent 2 5 2 N 2 0 N P 2
Beacon 9 9 9 E 8 9 9 G 9
Exceed 9 9 9 - - 9 8+ G 9
Lightning 7 7 8 F - 8 6 GE 7
Permit 8 8 7 G 8 8 8 F 8
Hornet 8 7 7 E - 9 9 G 8
Resolve 8 8 8 - - 9 - G 8
Scorpion
III 8 9 - G - 8 9 G 8

Table 12. Efficacy of corn herbicides: Prickly sida

IL KY MO Avg
Soil-applied
Atrazine 9 9 9 9
Princep 9 9 9 9
Python 7 7 - 7
Hornet 7 7 - 7
Postemergence
Atrazine 8 9 9 8+
Buctril 4 4 4 4
Buctril
+ Atrazine 9 - - -
Laddok S-12 8 - - -
Liberty 7 - 7 7
Tough 6 - 5 5+
Banvel/
Clarity 8 8 8 8
Marksman 9 9 - 9
2,4-D 8 8 8 8
Stinger 0 - - -
Accent 3 2 2 2+
Beacon 7 7 6 7
Exceed 8 8 - 8
Lightning 8 - - -
Permit 7 7 6 7
Hornet 7 - - -
Resolve 8 8 - 8
Scorpion III 8 - - -

Table 13. Efficacy of corn herbicides: Smartweed

IA IL IN KY MI MO M
N NB OH PA WS A
v
g
Soil-applied
Atrazine E 9 9 9 G 9 G 9 9 9+ E 9
Princep - 9 9 9 G 9 G - - - - 9
Python GE 8 9 8 G - G 8 8 8+ G 8
Hornet - 8 9 8 G - - 8 8+ 8+ - 8+
Postemergence
Atrazine E 9 9 9 G 9 G 9 9 10 E 9
Buctril GE 9 9 9 G 9 G 9 8 9 GE 9
Buctril
+Atrazine - 9 - - G - - 9 9 10 E 9
Laddok
S-12 - 9 - - G - - 9 9 9 E 9
Liberty GE 8 9 9 G - G 9 8+ 8+ GE 8+
Tough - 5 - - - 6 P - - 7 P 6
Banvel
/Clarity E 9 9 9 E 9 G 9 9 10 E 9
Marksman - 9 - 9 E - - 9 9 10 E 9
2,4-D F 6 7 7 P 7 P 4 6 7 P 6
Stinger - 7 7 - F - FG - 5 7 F 6+
Accent G 7 8 6 G 8 G 7 8 8 G 7+
Beacon G 8 7 6 G 8 G 8 8 8 G 8
Exceed GE 9 9 9 G - G 8 9 9 G 9
Lightning - 9 9 9 G - G 8 9 8+ G 9
Permit GE 7 7 7 F 8 FG 7 7 8 FG 7+
Hornet GE 8 8 9 G - G 8 9 8 G 8+
Resolve - 9 9 8 - - - 9 9 - E 9
Scorpion
III GE 9 9 - G - G 9 9 9 G 9

Table 14. Efficacy of corn herbicides: Sunflower, wild

IA IL KS MO MN NB ND SD Avg
Soil-applied
Atrazine G 8 F 7 F 7 G G 7+
Princep - 8 - 7 - - - - 7+
Python FG 8 G - G 7 P F 7+
Hornet - 9 E - G 7 E - 8
Postemergence
Atrazine E 9 E 9 G 8 G E 9
Buctril E 9 E 8 G 9 GE E 9
Buctril
+ Atrazine - 9 E - - 9 - - 9
Laddok
S-12 - 9 E - - 9 - - 9
Liberty E 9 E 8 G 9 E G+ 9
Tough - 8 - 6 G - FG G 7
Banvel/
Clarity G 8 G 9 G 7 GE G+ 8
Marksman - 9 E - - 9 - - 9
2,4-D G 8 E 9 F 7 E G+ 8
Stinger - 8 - - G - GE - 8
Accent P 4 - 5 - 2 P P 4
Beacon G 9 GE 8 G 9 - E 9
Exceed E 8 E - G 9 - E 9
Lightning - 9 E - G 8 G E 8+
Permit E 9 - 9 G 9 E E 9
Hornet GE 9 E - G 9 E E 9
Resolve - 8 E - - 8 - - 8
Scorpion
III GE 9 E - G 9 E E 9

Table 15. Efficacy of corn herbicides: Velvetleaf

I
A I
L I
N K
S K
Y M
I M
O M
N N
B O
H P
A W
S A
v
g
Soil-applied
Atrazine E 7 8 F 8 F 7 F 7 8 8+ F 7+
Princep - 7 7 - 8 F 8 - - - 8 - 7+
Python E 8 8 E 7 G - G 7 8+ 8+ G 8
Hornet - 8 8 E 7 G - G 7 9 9 - 8
Postemergence
Atrazine E 8 8 G 8 F 8 F 8 8 8 G
E 8
Buctril G 8 8 F
G 8 G 8 G 7 8 8+ G 8
Buctril
+Atrazine - 9 - E - G - - 8 9 9 G
E 9
Laddok
S-12 - 9 - E - G - - 9 9 9 G
E 9
Liberty E 8 8 G 7 F 7 G 8 7+ 8 G 8
Tough - 6 - - - - 6 P - - 6 F 6
Banvel/
Clarity F
G 8 9 G 8 F 8 G 4 7+ 8 G 8
Marksman - 8 - G
E 8 G - - 8 9 9 G
E 8+
2,4-D G 8 8 G 8 F 8 G 8 8 8 G 8
Stinger - 3 0 - - P - P - 0 6 P 3
Accent F 5 6 - 5 F 3 P 4 5 7 F 5
Beacon F
G 7 7 F
G 7 G 6 F 7 8 8 G
E 7
Exceed E 9 9 E 8 - - G 8 9 9 GE 9
Lightning - 9 9 G 9 F - G 8 9 8+ G
E 9
Permit E 9 8 - 8 G 8 G 9 8 9 E 8+
Hornet G
E 8 8 E 8 G - G 8 8+ 8+ G
E 8+
Resolve - 8 8 E 8 - - - 8 9 - G
E 8
Scorpion III G
E 8 8 G
E - G - G 8 8 9 G
E 8