Midwest Vegetable Guide - 2022 - 87

Asparagus - Weeds
nearby broadleaf crops and garden plants. Maximum 1 pt. per
acre per year. REI: 24-hour. PHI: 1-day. HRAC 04.
Lorox DF (50) (linuron) POST PRE
clethodim products (clethodim) POST
| Use 2EC
formulations at 6-8 fl. oz. per acre with 1 qt. of COC per 25
gals. of spray solution (1% v/v). Use Select Max at 9-16 fl.
oz. per acre with 8 fl. oz. of NIS per 25 gals. of spray solution
(0.25% v/v). Spray on actively growing grass. Wait at least
14 days between applications. Do not exceed 32 fl. oz. of
2EC formulations or 64 fl. oz. of Select Max per acre per
season. REI: 24-hour. PHI: 1-day. HRAC 01.
diuron products (diuron) PRE
| Established
plantings only. Do not apply to young plants during the first
year. Use 80DF formulations at 1-4 lbs. per acre, and do not
exceed 6 lbs. per acre per season. Use 4L formulations at 0.83.2
qts. per acre and do not exceed 4.8 qts. per acre per
season. Use lower rates on light-colored soils with less than
2% organic matter. Apply after tillage or chopping fern in the
spring and again after harvest, if necessary. See product label
for split application rates. 6-8 weeks of residual activity. RUP
in Michigan only. REI: 12-hour. HRAC 05. RUP.
Dual Magnum (7.62EC) (s-metolachlor) PRE
|
1.33-2.0 pts. per acre. Illinois, Indiana, Michigan, and
Minnesota only. IL 24c exp. 03/25/24. MI 24c exp. 12/31/21.
MN 24c exp. 12/31/25. Apply before asparagus and weeds
emerge in spring or after the harvest season. Needs moisture
for activation. Do not exceed 1 application per crop. REI: 24hour.
PHI: 16-day. HRAC 15.
Fusilade DX (2EC) (fluazifop-P) POST
| 8-12 fl. oz.
per acre. Include 1-2 pts. of COC or 0.5-1 pt. of NIS per 25
gals. of spray solution. Spray on actively growing grass.
Rates may be doubled if asparagus will not be harvested for
12 months. Wait at least 14 days between applications. Do
not exceed 48 fl. oz. per acre per season on bearing
asparagus. REI: 12-hour. PHI: 1-day. HRAC 01.
glyphosate products (glyphosate) POST
| 0.753.75
lbs. acid equivalent (ae) per acre. Use formulations
containing 3 lbs. ae per gal. (4 lbs. isopropylamine salt per
gal.) at 1-5 qts. per acre, or formulations containing 4.5 lbs.
ae per gal. (5 lbs. potassium salt per gal) at 0.66-3.3 qts. per
acre. Apply to emerged weeds at least 7 days before spears
emerge or immediately after last harvest. Use low rate for
annuals and higher rates for perennials. See label for
suggested application volume and adjuvants. If spears are
allowed to regrow, delay application until ferns have
developed and apply as a directed or shielded spray. Contact
of the spray with asparagus fern may result in crop injury.
REI: 4-hour to 12-hour. PHI: 14-day. HRAC 9.
Poast (1.5EC) (sethoxydim) POST
| 1-1.5 pts. per
acre. Include 1 qt. COC per acre. Spray on actively growing
grass. Use high rate on quackgrass. Do not exceed 5 pts. per
acre per season. REI: 12-hour. PHI: 1-day. HRAC 01.
QuinStar 4L (3.8) (quinclorac) POST
| 12.6 fl.
oz. per acre. Include 1 qt. of COC per 25 gallons of spray
solution. Apply after final harvest for the year. Controls
bindweed, Canada thistle, barnyardgrass, large crabgrass. Do
not exceed 1 application per year. REI: 12-hour. HRAC 04.
Midwest Veg Guide 2022
87
pendimethalin products (pendimethalin) PRE
2.4-8.2 pts. per acre. Use formulations with 3.8 lbs. active
ingredient per gallon. Apply at least 14 days before first
harvest and prior to spear emergence. If spears are present,
remove before application. On sandy soil use no more than
2.4 pts. per acre. Do not apply to newly seeded asparagus
during first year. REI: 24-hour. PHI: 14-day. HRAC 03.
|
| 2-4 lbs. per
acre. Established crowns: Apply before spears emerge, before
cutting season or immediately after cutting, or as directed
spray in ferns. New planted crowns: To control small
emerged weeds apply 1-2 lbs. per acre, up to 2 applications
when ferns are 6-18 inches tall. Newly seeded crops: Apply a
1-inch band of activated charcoal over the row at planting,
then apply Lorox. Use charcoal at 300 lbs. per acre of actual
area sprayed, which is equivalent to 15 lbs. per acre of crop
with a 20-inch row-spacing. Or, use the low rate of Lorox
when ferns are 6-18 inches tall and weeds are less than 4
inches tall. Do not use on sand, loamy sand, or soils with less
than 1% organic matter. Maximum 4 lbs. or 3 applications
per acre per year. REI: 24-hour to 8-day. PHI: 1-day. HRAC
05.
metribuzin products (metribuzin) POST PRE
|
Established plantings only. Do not apply to young plants
during first year. Use 75DF formulations at 0.6-2.6 lbs. per
acre. Use 4F formulations at 2-4 pts. per acre. See product
label for split application rates. Use low rate if combined with
diuron. 6-8 weeks residual activity. Two sprays necessary for
seasonlong sandbur control. Do not exceed 2.6 lbs. or 4 pts.
per acre per year. REI: 12-hour. PHI: 14-day. HRAC 05.
paraquat products (paraquat) POST
| 2.5-4 pts.
per acre. Include 1 qt. of COC, or 4-8 fl. oz. of NIS per 25
gallons of spray solution. Apply before crop emergence or
after last harvest before fern regrows. REI: 12 to 24-hour.
PHI: 6-day. HRAC 22. RUP.
Midwest Vegetable Guide - 2022

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