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Corn Production Guide (continued)

A-1130, May 1997

Relative Herbicide Effectiveness on Weeds and Persistence in Soil

This table gives a general rating of relative herbicide effectiveness to weeds listed and persistance of herbicides in soil. Under favorable weather conditions, control may be better than indicated. Under unfavorable conditions, some herbicides rated as good or fair may give erratic and unacceptable results. Also, dry and/or cool weather increases herbicide persistence while wet and/or warm weather reduces herbicide persistence.

Weed control ratings in this section are based on the following scale:

   E = Excellent = 90 to 99% Control   P = Poor = 40 to 65% Control
   G = Good = 80 to 90% Control        N = None = No Control
   F = Fair = 65 to 80% Control

Herbicide persistence ratings are for residues present 12 months after application: 

   O = Often    S = Seldom    N = None
Soil Applied Herbicides B
a
r
n
y
a
r
d
g
r
a
s
s		 F
i
e
l
d

S
a
n
d
b
u
r

 F
o
x
t
a
i
l,

G
r
e
e
n

 F
o
x
t
a
i
l,

Y
e
l
l
o
w

 Q
u
a
c
k
g
r
a
s
s		 V
o
l
u
n
t
e
e
r

C
e
r
e
a
l
s

 W
i
l
d

O
a
t

 W
i
l
d

P
r
o
s
o

M
i
l
l
e
t

 H
e
r
b
i
c
i
d
e

P
e
r
s
i
s
t
e
n
c
e
Atrazine (PPI) G F F-G G P-F E E P-F O
Atrazine (PRE) G F F-G G P E G-E P O
Bladex/Cy-Pro (PPI) F F G G P-F E F P-F S
Bladex/Cy-Pro (PRE) P-F F F-G F-G P G-E P-F P-F S
Broadstrike (PPI) N N N N N N N N N
Broadstrike (PRE) N N N N N N N N N
DoublePlay (PPI) E G-E E E F-G G-E G-E F-G N
Dual (PRE) G-E P G-E G-E N F-G G P N
Dual (PPI) F-G P G G N F P N N
Eradicane (PPI) E G-E E E F-G G-E G-E F-G N
Frontier (PPI) G-E G G-E G-E N G F F N
Frontier (PRE) F-G G G-E G-E N F F F N
Harness/Surpass (PPI) E G-E G-E G-E N G G F-G N
Harness/Surpass (PRE) E G G-E G-E N G G F-G N
Hornet (PPI/PRE) N N N N N N N N O
Lasso/generics (PPI) G-E F G-E G-E N F-G F-G P-F N
Lasso/generics PRE F-G P G G N F-G P P N
Sencor (PPI) F F-G F F F G N P S
Sencor (PRE) P-F F P-F P-F N F-G P P S
Prowl/Pentagon (PPI) E G E1 E1 N G G P-F S
Prowl Pentagon (PRE) E F G-E1 G-E1 N F-G P-F PF S
Ramrod (PRE) E F-G G-E G-E N G-E P P N
Sutan (PPI) G-E G E E P-F E G P-F N
TopNotch (PPI) E G-E G-E G-E N G G F-G N
TopNotch (PRE) E G G-E G-E N G G F-G N

PPI = Preplant Incorporated, PRE = Preemergence
1Except where resistant populations have developed.


Soil Applied Herbicides B
u
c
k
w
h
e
a
t,

W
i
l
d

 C
o
c
k
l
e
b
u
r,

C
o
m
m
o
n

 F
l
i
x
w
e
e
d		 K
o
c
h
i
a		 L
a
m
b
s
q
u
a
r
t
e
r
s,

C
o
m
m
o
n

 L
a
n
c
e
l
e
a
f

S
a
g
e

 M
a
l
l
o
w,

V
e
n
i
c
e

 M
a
r
s
h
e
l
d
e
r		 M
u
s
t
a
r
d,

W
i
l
d

 N
i
g
h
t
s
h
a
d
e,

B
l
a
c
k

 P
i
g
w
e
e
d,

R
e
d
r
o
o
t

 P
r
i
c
k
l
y

L
e
t
t
u
c
e

 R
a
g
w
e
e
d,

C
o
m
m
o
n

 S
m
a
r
t
w
e
e
d,

A
n
n
u
a
l

 S
u
n
f
l
o
w
e
r		 T
h
i
s
t
l
e,

R
u
s
s
i
a
n

 T
h
i
s
t
l
e,

C
a
n
a
d
a
Atrazine (PPI) E G E E E - G - E E E E E E G-E E F
Atrazine (PRE) G-E F-G E G-E G-E - G - E G-E G-E E E E F-G G-E P-F
Bladex/Cy-Pro (PPI) G F E G-E G-E - G - E F F E E E F-E E N
Bladex/Cy-Pro (PRE) F-G F E G G-E - G E G-E P-F P-F E E E P-F G-E N
Broadstrike (PPI) G-E F-G E E1 E G-E E E E G-E E E G E G-E G-E1 F
Broadstrike (PRE) G F E E E G-E E E E G-E E E F-G E G G1 P-F
DoublePlay (PPI) F P P G-E E N N P F G-E E P G-E P P F N
Dual (PPI) P N - F F N N - P G G-E P P-F P N F N
Dual (PRE) P N - P-F P-F N N - P G F-G P P-F P N P-F N
Eradicane (PPI) F P P F F N N P P F-G G P F P N P N
Frontier (PPI) P N - F F N - - P-F G-E E - P P N P-F N
Frontier (PRE) P N - P-F F N - - P-F G G-E - P P N P N
Harness/Surpass (PPI) P P - G-E G-E N - - F G-E E - G-E P P F N
Harness/Surpass (PRE) P P - G G N - - F G G-E - G P N F N
Hornet (PPI/PRE) E G-E E E1 E G-E E E E E E E E E E E1 F-G
Lasso/generics (PPI) P N - F F N N - P G G-E P P P N F N
Lasso/generics (PRE) P N - P-F P-F N N - P G F-G P P P N P-F N
Sencor (PPI) F F E G F F-G G-E E E P E E E G P-F E N
Sencor (PRE) F P-F G-E F-G P-F F-G G R G-E P G-E E G-E G P G-E N
Prowl/Pentagon (PPI) P-F N P G-E E N F-G N N P E N F P N G N
Prowl Pentagon (PRE) P N P F-G G N F - N N G N P P N F-G N
Ramrod (PRE) F P P G F N N N P - E P P P N P N
Sutan + (PPI) P P P - P N N - P F F P F P N P N
TopNotch (PPI) P P - G-E G-E N - - F G-E E - G-E P N F N
TopNotch (PRE) P P - G G N - - F G G-E - G P N F N

PPI = Preplant Incorporated, PRE = Preemergence
1Except where resistant populations have developed.

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A-1130, May 1997

 

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