Weed Control Ratings

University weed control ratings from across the Corn Belt give acetochlor-based products like Surpass®, Keystone®, Keystone LA, FulTime® and TopNotch® herbicides the edge for weed control over competitive products.

University Weed Control Ratings give Acetochlor the Edge for Weed Control
Iowa
State
Minnesota Wisconsin Purdue Ohio
State
Missouri Nebraska Penn
State
S. Dakota State Kentucky Michigan State Kansas State
Lambsquarters
Surpass
Dual
Outlook

P-F
P
P

F
F-P
F-P

F-G
F
F

7+
6
6

7+
6
6

9
6
7

8
7
7

7
6
6

8
4
5

7
5
6

F
P
P

G
F-G
N
Pigweeds
Surpass
Dual
Outlook

N
N
N

G
G
G

G-E
G
G

8+
8
8

8+
8
8

10
9
9

8
7
8

9
8
8

8
7
7

8
7
8

G
G
G

G
F-G
F-G
Waterhemp
Surpass
Dual
Outlook

G
F-G
F-G

G
G
G

N
N
N

8
8
8

8
8
8

9
9
9

8
8
8

N
N
N

8
7
7

N
N
N

N
N
N

G
F-G
F-G
Smartweed
Surpass
Dual
Outlook

P-F
P
P

F
F-P
F-P

F
P
P

5
4
4

5
4
4

6
5
4

8
7
7

7
N
6

4
4
4

5
5
5

P
P
P

N
N
N
Common Ragweed
Surpass
Dual
Outlook


P
P
P


F
P
P


F
P
P


7
5
5


7
5
5


8
5
5


5
5
5


7+
6
6


4
4
4


6
5
5


F
P
P


F
N
N

E = Excellent; G = Good; F= Fair; P = Poor; N = No control or not labeled.  9-10 = Excellent; 8 = Good; 7 = Fair; 6 = Poor; 5 or 4 = Unsatisfactory.


Keystone, Keystone LA, Surpass, FulTime and TopNotch are Restricted Use Pesticides and are not available for sale, distribution or use in the state of New York. Always read and follow label directions.