Insecticides and Miticides Registered for Insect and Mite Control in Grass Seed Production
Silvia I. Rondon
OSU-HAREC Extension Entomologist Specialist
Contact: email [email protected]
Pest
Aphids
Active
Ingredient
chlorpyrifos
Commercial
name
Lorsban
Advanced
dimethoate
Armyworm
Black Cutworms
Glassy Cutworm
1|R o n d o n
Rate (lb)
unless noted
0.5-1
lb ai/a
0.25-0.33 lb
ai/a
0.02 to 0.03
lb ai/a
lamdacyhalothrin
Warrior
zetacypermethrin
Mustang MAX
014 to 0.025
lb ai/a
carbaryl
Sevin XLR Plus,
others
chlorpyrifos
Lorsban
Advanced
cyfluthrin
Baythroid XL
lambdacyhalothrin
Warrior
PHI
REI
Not given
12 hr
14 days
0 days for grazing
and cut for
forage, 7 days for
straw and seed
crop
0 days forage,
hay; 7 days straw
and seed
screenings
12 hr
1 to 1.5
quarts/a
product
1 lb
ai/a
14 days
12 hr
0.013 to
0.015 lb
ai/a
0.015 to 0.03
lb ai/a
0 days
12 hr
0 days for grazing
and cut for
12 hr
12 hr
Restrictions
Do not graze or feed hay, forage, seed, or use
screenings from treated field. For use on perennial
grass seed crops only.
Do not graze or feed hay, forage, seed, or use
screenings from treated fields.
For forage and hay use no more than 0.10 lb ai/a per
season, make subsequent applications no closer than 7
days; for straw and seed screenings use no more than
0.125 lb ai/a per season, make subsequent
applications no closer than 17 days.
Up to two applications per year, but not more than
once every 14 days. Do not exceed 3 lb ai/a per
season.
Do not graze or feed hay, forage, seed, or use
screenings from treated fields. Seed conditioners must
be informed if seed is from a treated field. For use on
perennial grass seed crops only. OR SLN allows up to 3
applications per year.
Maximum amount allowed per 5 day interval- 0.022 lb
ai/a. Maximum amount allowed per crop season0.089 lb ai/a.
Cereal Leaf Beetle
spinosad
Blackhawk
spinosad
Success or
Entrust
zetacypermethrin
Mustang MAX
0.0175 to
0.025 lb ai/a
cyfluthrin
Baythroid XL
lambdacyhalothrin
zetacypermethrin
12 hr
0.013 to
0.015 lb ai/a
0 days
12 hr
Warrior
0.02 to 0.03
lb ai/a
12 hr
Mustang MAX
0.0175 to
0.025 lb ai/a
0 days for grazing
and cut for
forage, 7 days for
straw and seed
crop
0 days forage,
hay; 7 days straw
and seed
screenings
12 hr
For forage and hay use no more than 0.10 lb ai/a per
season, make subsequent applications no closer than 7
days; for straw and seed screenings use no more than
0.125 lb ai/a per season, make subsequent
applications no closer than 17 days.
*
carbaryl
Carbaryl, Sevin
1 lb ai/a
12 hr
No more than 2 applications/yr at least 14 days apart
cyfluthrin
Baythroid XL
0.02 to 0.022
lb ai/a
14 days if grass
foraged or
harvested for hay
0 days
12 hr
Maximum amount allowed per 5 day interval is 0.022
lb ai/a. Maximum amount allowed per crop season is
0.089 lb ai/a
none
Grass Gelechiidae
none
2|R o n d o n
4 hr
0 days forage, 3
days hay or
fodder
0 days forage,
hay; 7 days straw
and seed
screenings
Crane Fly
Grasshoppers
025 to 0.050
lb ai/a per
season
0.031 to
0.062 lb ai/a
forage, 7 days for
straw and seed
crop
PHI 0 days graze,
3 days hay
4 hr
For resistance management, do not apply Success
more than three times in any 21-day period. Do not
exceed 0.186 lb ai/a per season.
For forage and hay use no more than 0.10 lb ai/a per
season, make subsequent applications no closer than 7
days; for straw and seed screenings use no more than
0.125 lb ai/a per season, make subsequent
applications no closer than 17 days.
Maximum amount allowed per 5 day interval is 0.022
lb ai/a. Maximum amount allowed per crop season is
0.089 lb ai/a.
Leafhoppers
Banks Grass Mite
Brown Wheat Mite
Sawfly
Sod Webworms
3|R o n d o n
lambdacyhalothrin
Warrior
0.02 to 0.03
lb ai/a
zetacypermethrin
Mustang MAX
0.0175 to
0.025 lb
ai/a
cyfluthrin
Baythroid XL
lambdacyhalothrin
Warrior
0.013 to
0.015 lb
ai/a
0.02 to 0.03
lb
ai/a
zetacypermethrin
Mustang MAX
0.014 to
0.025 lb
ai/a
lambdacyhalothrin
Warrior
0.02 to 0.03
lb
ai/a
0 days for grazing
and cut for
forage, 7 days for
straw and seed
crop
0 days forage,
hay; 7 days straw
& seed
screenings
12 hr
0 days
12 hr
0 days for grazing
and cut for
forage, 7 days for
straw and seed
crop
0 days forage,
hay; 7 days straw
and seed
screenings
12 hr
0 days for grazing
and cut for
forage, 7 days for
straw and seed
crop
12 hr
12 hr
12 hr
none
For forage & hay use no more than 0.10 lb ai/a per
season, make subsequent applications no closer than 7
days; for straw and seed screenings use no more than
0.125 lb ai/a per season, make subsequent
applications no closer than 17 days.
Maximum amount allowed per 5 day interval- 0.022 lb
ai/a. Maximum amount allowed per crop season0.089 lb ai/a.
For forage and hay use no more than 0.10 lb ai/a per
season, make subsequent applications no closer than 7
days; for straw and seed screenings use no more than
0.125 lb ai/a per season, make subsequent
applications no closer than 17 days.
**
chlorpyrifos
Lorsban
Advanced
1 lb
ai/a
cyfluthrin
Baythroid XL
lambda-
Warrior
0.0125 to
0.022 lb
ai/a
0.02 to 0.03
0 days
12 hr
0 days for grazing
12 hr
For use on perennial grass seed crops only. No part of
crop may be used for feed. Do not graze or feed hay,
forage, seed, or screening from treated fields
Maximum amount allowed per 5 day interval is 0.022
lb ai/a. Maximum amount allowed per crop season is
0.089 lb ai/a.
cyhalothrin
zetacypermethrin
Winter Grain Mite
Mustang MAX
dimethoate
lambdacyhalothrin
Wireworm
lb
ai/a
Warrior
0.014 to
0.025 lb
ai/a
and cut for
forage, 7 days for
straw and seed
crop
0 days forage,
hay; 7 days straw
and seed
screening
12 hr
For forage and hay use no more than 0.10 lb ai/a per
season, make subsequent applications no closer than 7
days; for straw and seed screenings use no more than
0.125 lb ai/a per season, make subsequent
applications no closer than 17 days.
Do not graze or feed hay, forage, seed, or use
screenings from treated fields. Seed conditioners must
be informed if seed is from a treated field. Apply in fall
(late September or October) or late winter (usually
February) to prevent mite populations from increasing
to an injurious level.
0.25 to 0.33
lb
ai/a
14 days
2 days
0.02 to 0.03
lb
ai/a
0 days for grazing
and cut for
forage, 7 days for
straw and seed
crop
12 hr
none
***
* Chlorpyrifos (Lorsban Advanced) at 0.5 lb ai/a, or Baythroid XL at 0.022 lb ai/a applied to control other pests on their labels, have
given good control of cranefly larvae infesting grasses grown for seed.
* * Pyrethroids as applied to control armyworm give good control.
*** Effective soil-applied insecticides are not labeled for use on grasses grown.
More information at http://uspest.org/pnw/insects?10LEGU10.dat
4|R o n d o n