Midwest Vegetable Guide - 2022 - 252

Rhubarb - Weeds
mulch with 3-4 inches of straw around plants, but not on
crowns. If additional mulch is needed in the spring, apply
before hot, dry weather. Add more mulch during summer (if
needed) to control weeds and retain moisture.
Pesticide
Aim EC (2) (carfentrazone) POST
make more than one application per crop per year. REI: 12hour.
HRAC 13.
Dual Magnum (7.62EC) (s-metolachlor) PRE
|
0.67-1.33 pts. per acre. Apply in spring before rhubarb and
weeds emerge. Do not exceed one application and 1.33 pts.
per acre per year. REI: 24-hour. PHI: 62-day. HRAC 15.
| 0.5-2.0 fl. oz. per
acre. Apply a minimum of 1 day prior to transplanting, or
apply between crop rows with hooded sprayer. Do not allow
spray to contact crop. Add 1 qt. COC (1% v/v) or 0.5 pt. NIS
per 25 gal. of spray solution (0.25% v/v). Weeds must be
actively growing and less than 4 in. tall. Do not exceed 6.1 fl.
oz. per acre per season. REI: 12-hour. HRAC 14.
Callisto (40SC) (mesotrione) PRE
| 6 fl. oz. per acre.
Apply to dormant, established rhubarb. Applying after
growth begins will cause crop stunting and bleaching. If
weeds are emerged, add 1qt. COC (1% v/v) or 0.5 pt. NIS per
25 gal. of spray solution (0.25% v/v). Has residual activity to
control weeds that have not emerged. Do not exceed 6 fl. oz.
per acre per year, or 1 application per year. REI: 12-hour.
PHI: 21-day. HRAC 27.
Caparol 4L (prometryn) POST PRE
| 2-4 pts.
per acre. Apply to dormant, established rhubarb before leaves
emerge in spring. Use low rate on light soils. If weeds are
present, add 1 qt. COC (1% v/v) or 0.5 pt. NIS per 25 gal. of
spray solution (0.25% v/v). REI: 12-hour. PHI: 40-day.
HRAC 05.
Casoron 4G (dichlobenil) PRE
| 50 lb. per acre.
Apply before rhubarb emerges in early spring. Broadcast on
soil, and thoroughly incorporate granules by watering in.
REI: 12-hour. HRAC 29.
clethodim products (clethodim) POST
| Use 2EC
formulations at 6-8 fl. oz. per acre with 1 qt. COC per 25
gals. of spray solution (1% v/v). Do not exceed 32 fl. oz. of
2EC formulations per acre per season. Use Select Max at 916
fl. oz. per acre with 8 fl. oz. NIS per 25 gals. of spray
solution (0.25% v/v). Do not exceed 64 fl. oz. of Select Max
per acre per season. Use low rates for annual grasses and high
rates for perennial grasses. Spray on actively growing grass.
Wait at least 14 days between applications. REI: 24-hour.
PHI: 30-day. HRAC 01.
Command 3ME (clomazone) PRE
252
| 2 qt. per acre.
Apply to dormant rhubarb prior to leaf emergence. Do not
paraquat products (paraquat) POST
| 2.5-4 pt.
per acre of 2 lb. per gal. formulation or 1.7-2.7 pt. per acre of
3 lb. per gal. formulation. Add 1 qt. COC (1% v/v) or 0.5 pt.
NIS (0.25%) to 25 gal. of solution. Apply during the dormant
season before buds begin to grow. Do not exceed 2
applications per year. Certified applicators must successfully
complete an EPA-approved training program before mixing,
loading, and/or applying paraquat. REI: 12 to 24-hour.
HRAC 22. RUP.
Poast (1.5EC) (sethoxydim) POST
Midwest Veg Guide 2022
| 1-1.5 pts. per
acre. Add 1 qt. COC per 25 gal. of spray solution (1% v/v).
Spray on actively growing grass. Do not exceed 3 pt. per acre
Lorox DF (50) (linuron) POST PRE
| 2-3 lbs.
per acre. Apply broadcast to dormant rhubarb in the spring
before leaves emerge. REI: 24-hour to 8-day. HRAC 05.
Kerb SC (3.3) (pronamide) POST PRE
| 2.5-5
pt. per acre. Michigan only (MI 24c exp. 04/06/22): apply to
dormant plants after frost has killed leaves in fall. Suppresses
quackgrass. Do not apply to rhubarb the year of planting.
Include glyphosate with application for better weed control.
REI: 24-hour. PHI: 38-day. HRAC 03. RUP.
Fusilade DX (2EC) (fluazifop-P) POST
| 10-16 fl. oz.
per acre. Add 1 qt. COC (1% v/v) or 0.5 NIS per 25 gal. of
spray solution (0.25% v/v). Apply to small actively growing
grass. Do not exceed 32 fl. oz. per acre per year. REI: 12hour.
PHI: 14-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 qt. per acre, or formulations containing 4.5 lb ae
per gal. (5 lb. potassium salt per gal.) at 0.66-3.3 qt. per acre.
Broadcast before plants emerge, or apply between rows with
wipers or hooded or shielded sprayers. Use low rate for
annuals and higher rates for perennials. See label for
suggested application volume and adjuvants. REI: 4-hour to
12-hour. PHI: 14-day. HRAC 9.
Midwest Vegetable Guide - 2022

Table of Contents for the Digital Edition of Midwest Vegetable Guide - 2022
