UNITED
STATES
ENVIRONMENTAL
PROTECTION
AGENCY
WASHINGTON,
D.
C.
20460
OFFICE
OF
PREVENTION,
PESTICIDES
AND
TOXIC
SUBSTANCES
Memorandum
To:
Margaret
Stasikowski,
Director,
Health
Effects
Division
Steven
Bradbury,
Director,
Environmental
Fate
and
Effects
Division
From:
Debbie
Edwards,
Director,
Special
Review
and
Reregistration
Division
Subject:
Nicosulfuron
Use
Closure
Memo
This
memo
serves
as
the
nicosulfuron
Use
Closure
Memo
and
clarifies
its
uses
for
the
RED
risk
assessment.
Nicosulfuron
is
a
postemergence
herbicide
with
registered
uses
for
field,
sweet
and
pop
corn.
After
attaining
confirmation
of
the
single
maximum
use
rate
for
Accent
«
,
changes
w
ere
made
to
BEAD
 
s
Table
A2
(
2003)
to
reflect
this
correct
rate
because
it
is
possible
that
the
maximum
s
ingle
application
used
is
equivalent
to
the
maximum
seasonal
rate.
cc:
David
Hrdy,
HED
Larry
Liu,
EFED
Jerry
Stokes,
HED
Dave
Jaquith,
HED
Abdallah
Khasawinah,
HED
TABLE
A2.
FOOD/
FEED
USE
PATTERNS
SUMMARY
FOR
Nicosulfuron
(
CASE
)
Current
As
Of:
08/
03/
2004
Page
1
of
5
SITE
NAME
LIMITATIONS
Application
Timing
(
for
any
Reg.#
at
any
rate)
Application
Type
(
for
any
Reg.#
at
any
rate)
Application
Equipment
(
for
any
Reg.#
at
any
rate)
Max.
Single
Appl.
Rate
to
a
Single
Site
Max.
Seasonal
Rate
Max.
#
Apps/
cc
&
yr
M
R
I
R
E
I
PHI/
PGI/
PSI
Use
Limitations
(
May
not
apply
to
all
Reg.
#
s)
CORN
(
UNSPECIFIED)
Do
not
apply
through
any
type
of
irrigation
system.
Do
not
apply
where
runoff
is
likely
to
occur.
Do
not
contaminate
water
by
cleaning
of
equipment
or
disposal
of
equipment
wash
waters.
Do
not
contaminate
water,
food,
or
feed
by
storage
or
disposal.
For
terrestrial
uses,
do
not
apply
directly
to
water
or
to
areas
where
surface
w
ater
is
present
or
to
intertidal
areas
below
the
mean
high
water
mark.
Rotational/
plant
back
crop
restriction.
Early
postemergence
Band
treatment/
Broadcast/
Low
volume
spray
(
concentrate)
Aircraft/
Ground
(
L)
.06248
lb
A
.06248
lb/
cc
2/
cc
NS
NS
12
h
Geographic
disallowable:
CA
CORN,
FIELD
30
day(
s)
prefeeding
interval.
30
day(
s)
pregrazing
interval.
30
day(
s)
prefeeding
interval.
30
day(
s)
pregrazing
interval.
32
day(
s)
preharvest
interval.
85
day(
s)
prefeeding
interval.
85
day(
s)
pregrazing
interval.
85
day(
s)
preharvest
interval.
Do
not
apply
directly
to
water,
or
to
areas
where
surface
water
is
present
or
to
intertidal
areas
below
the
mean
high
water
mark.
Do
not
apply
through
any
type
of
irrigation
system.
Do
not
apply
when
drift
is
likely
to
occur.
Do
not
apply
where
runoff
is
likely
to
occur.
Do
not
contaminate
water
by
cleaning
of
equipment
or
disposal
of
equipment
wash
waters.
Do
not
contaminate
water,
food
or
feed.
Do
not
contaminate
water,
food,
or
feed
by
storage
or
disposal.
Drift
and
runoff
may
be
hazardous
to
aquatic
organisms
in
neighboring
areas.
Endangered
species
restriction.
For
terrestrial
uses,
do
not
apply
directly
to
water
or
to
areas
where
surface
w
ater
is
present
or
to
intertidal
areas
below
the
mean
high
water
mark.
Groundwater
restriction.

TABLE
A2.
FOOD/
FEED
USE
PATTERNS
SUMMARY
FOR
Nicosulfuron
(
CASE
)
Current
As
Of:
08/
03/
2004
Page
2
of
5
SITE
NAME
LIMITATIONS
Application
Timing
(
for
any
Reg.#
at
any
rate)
Application
Type
(
for
any
Reg.#
at
any
rate)
Application
Equipment
(
for
any
Reg.#
at
any
rate)
Max.
Single
Appl.
Rate
to
a
Single
Site
Max.
Seasonal
Rate
Max.
#
Apps/
cc
&
yr
M
R
I
R
E
I
PHI/
PGI/
PSI
Use
Limitations
(
May
not
apply
to
all
Reg.
#
s)
Rotational/
plant
back
crop
restriction.
This
pesticide
is
toxic
to
aquatic
invertebrates.
Early
postemergence
Band
treatment/
Broadcast/
Low
volume
spray
(
concentrate)
Aircraft/
Ground
(
L)
.06248
lb
A
.06248
lb/
cc
2/
cc
NS
NS
12
h
Geographic
disallowable:
CA
Postemergence
Soil
band
treatment/
Soil
broadcast
treatment/
Spray
Aircraft/
Sprayer
.06248
lb
A
.06248
lb/
cc
1/
cc
NS
NS
4
h
Geographic
allowable:
CO
IA
KS
MN
NE
OK
SD
TX
Geographic
disallowable:
CA
NY
When
needed
Band
treatment/
Broadcast
Ground
(
L)
.06248
lb
A
.06248
lb/
cc
2/
cc
NS
NS
12
h
CORN,
POP
30
day(
s)
prefeeding
interval.
30
day(
s)
pregrazing
interval.
Do
not
apply
directly
to
water,
or
to
areas
where
surface
water
is
present
or
to
intertidal
areas
below
the
mean
high
water
mark.
Do
not
apply
through
any
type
of
irrigation
system.
Do
not
apply
where
runoff
is
likely
to
occur.
Do
not
contaminate
water
by
cleaning
of
equipment
or
disposal
of
equipment
wash
waters.
Do
not
contaminate
water,
food,
or
feed
by
storage
or
disposal.
For
terrestrial
uses,
do
not
apply
directly
to
water
or
to
areas
where
surface
w
ater
is
present
or
to
intertidal
areas
below
the
mean
high
water
mark.
Rotational/
plant
back
crop
restriction.
Early
postemergence
Band
treatment/
Broadcast/
Low
volume
spray
(
concentrate)
Aircraft/
Ground
(
L)
.06248
lb
A
.06248
lb/
cc
2/
cc
or
year
or
split
NS
12
h
Geographic
disallowable:
CA
Postemergence
Soil
band
treatment/
Soil
broadcast
treatment/
Spray
Aircraft/
Sprayer
.06248
lb
A
.06248
lb/
cc
NS
NS
NS
4
h
Geographic
disallowable:
CA
NY
TABLE
A2.
FOOD/
FEED
USE
PATTERNS
SUMMARY
FOR
Nicosulfuron
(
CASE
)
Current
As
Of:
08/
03/
2004
Page
3
of
5
SITE
NAME
LIMITATIONS
Application
Timing
(
for
any
Reg.#
at
any
rate)
Application
Type
(
for
any
Reg.#
at
any
rate)
Application
Equipment
(
for
any
Reg.#
at
any
rate)
Max.
Single
Appl.
Rate
to
a
Single
Site
Max.
Seasonal
Rate
Max.
#
Apps/
cc
&
yr
M
R
I
R
E
I
PHI/
PGI/
PSI
Use
Limitations
(
May
not
apply
to
all
Reg.
#
s)
CORN,
SWEET
30
day(
s)
prefeeding
interval.
30
day(
s)
pregrazing
interval.
Do
not
apply
directly
to
water,
or
to
areas
where
surface
water
is
present
or
to
intertidal
areas
below
the
mean
high
water
mark.
Do
not
apply
through
any
type
of
irrigation
system.
Do
not
apply
where
runoff
is
likely
to
occur.
Do
not
contaminate
water
by
cleaning
of
equipment
or
disposal
of
equipment
wash
waters.
Do
not
contaminate
water,
food,
or
feed
by
storage
or
disposal.
Rotational/
plant
back
crop
restriction.
Geographic
allowable:
ID
OR
WA
Postemergence
Broadcast/
Directed
spray
Ground
.06248
lb
A
.06248
lb/
cc
1/
cc
NS
NS
4
h
TABLE
A2.
FOOD/
FEED
USE
PATTERNS
SUMMARY
FOR
Nicosulfuron
(
CASE
)
Current
As
Of:
08/
03/
2004
Page
4
of
5
PRODUCT
NUMBERS
CONTAINED
IN
THIS
REPORT
000352­
00560,
000352­
00572,
000352­
00585,
000352­
00593,
000352­
00608,
000352­
006
12,
000352­
00619,
007969­
00166,
007969­
00175,
ID96000900,
OR96002900,
WA96002300
HOMEOWNER
PRODUCTS
CONTAINED
IN
THIS
REPORT
None
TABLE
A2.
FOOD/
FEED
USE
PATTERNS
SUMMARY
FOR
Nicosulfuron
(
CASE
)
Current
As
Of:
08/
03/
2004
Page
5
of
5
HEADER
ABBREVIATIONS
Site
Name
­
The
site
name
refers
to
the
entity
(
crop,
building,
surface
or
artic
le)
where
a
pesticide
is
applied
and/
or
which
is
being
protected.
Limitations
­
Precautionary
statements
related
to
the
use
of
the
product(
s).
Application
Timing
­
The
timing
of
pesticide
application
and
is
the
primary
appl
ication
sort
(
not
aggregated).
Application
Type
­
The
type
of
pesticide
application
(
aggregated).
Application
Equipment
­
The
equipment
used
to
apply
pesticide
(
aggregated).
Max.
Single
Appl.
Rate
to
a
Single
Site
­
Maximum
Dose
for
a
single
application
to
a
single
site.
System
calculated.
Max
Seasonal
Rate
­
The
maximum
amount
of
pesticide
that
can
be
applied
to
a
sit
e
in
one
growing
season
(/
cc)
and
during
the
span
of
one
year
(/
yr).
Max.
#
Apps/
cc
&
yr
­
Maximum
Number
of
Applications
per
crop
cycle
and
per
year
.
M
R
I
­
Minimum
Retreatment
Interval
(
days)
(
at
any
rate).
The
minimum
interval
between
pesticide
application
(
days).
R
E
I
­
ReEntry
Interval
­
The
minimum
amount
of
time
that
must
elapse
before
wo
rkers
can
reenter
a
treated
area.
PHI/
PGI/
PSI
Use
Limitations
(
May
not
apply
to
all
Reg.#
s)
­
Preharvest/
Pregrazin
g/
Preslaughter
Interval
use
limitations
pertinent
to
the
application.
Current
As
Of:
­
The
label
data
for
the
listed
products
in
this
report
is
curren
t
of
this
date.
ABBREVIATIONS
AN
­
As
needed
NA
­
Not
Applicable
NS
­
Not
Specified
(
on
label)
(
L)
­
The
dosage
information
provided
is
from
the
label
in
terms
of
product
(
e.
g
.,
ounces,
gallons,
or
pounds
of
the
product)
because
there
was
insufficient
information
(
e.
g.,
missing
density,
area,
or
active
ingredient
percentages)
to
p
rovide
converted
dosage
information.
This
report
provides
active
ingredient
percentage
in
the
product
for
the
reported
chemical
for
all
unconverted
label
do
sage
information
if
this
information
is
available.
This
active
ingredient
percentage
information
is
displayed
next
to
the
form
code
abbreviations
(
e.
g.,
8
0%
WP).
APPLICATION
RATE
cwt
:
Hundred
Weight
nnE­
xx
:
nn
times
(
10
power
­
xx),
for
instance,
"
1.234E­
04"
is
equivalent
to
".
0
001234"
End
of
Report
For
questions
and
comments
please
contact
the
OPP
Usage
and
Label
Use
Team
throu
gh
e­
mail.
