Midwest Vegetable Guide - 2022 - 90

Celery - Diseases
Aster Yellows (Purple-Top Wilt) of
Multiple Crops - Phytoplasma Mollicutes
Pesticide
Insecticides | Use an insecticide to control leafhoppers that
transmit the disease. Leafhoppers must be controlled before
they feed. See Insect section.
Bacterial Blight of Celery - Pseudomonas
Bacteria
Symptoms include leaf blight and extensive leaf death that
requires additional trimming at harvest, resulting in yield
loss. May be seedborne.
Non-Pesticide
Use disease-free seed. Hot water seed treatment may reduce
this seedborne disease. Use temperatures and times of 118 F
for 30 minutes for celery. Rotate to non-host crops for 2
years. Varieties with partial resistance are available. Prompt
destruction of the finished crop with tillage to rapidly
breakdown tissue is an important method to prevent disease
build-up.
Pesticide
copper products (copper hydroxide, copper octanoate,
copper oxychloride, copper sulfate, copper diammonium
diacetate complex, cuprous oxide) | Several formulations of
copper (Badge, Champ, Kocide) are labelled for use and may
slow the spread of bacterial blight. See label for directions.
REI: 4 to 48-hour. PHI: 0-day. FRAC M01. OMRI-listed.
Crater Rot of Celery - Rhizoctonia
Fungus
Non-Pesticide
Clean and sanitize transplant trays, benches, and tools. Rogue
infected transplants. Avoid working field under wet
conditions. Prompt destruction of the finished crop with
tillage to rapidly breakdown tissue is an important method to
prevent disease build-up.
Pesticide
azoxystrobin products (azoxystrobin) | Products include
AzoxyStar, AframeTM , Satori Fungicide , Gold Rush,
Dexter SC, Quadris Flowable, Acadia 2 SC, Heritage,
Tetraban Fungicide, Willowood Azoxy 2SC. See product
labels for various rates. REI: 4-hour. PHI: 0-day. FRAC 11.
90
Catamaran (potassium phosphite, chlorothalonil) | 4-5 pts.
per acre. REI: 12-hour. PHI: 7-day. FRAC 33, FRAC M05.
chlorothalonil products (chlorothalonil) | Several
formulations of chlorothalonil (Bravo, Echo, Equus) are
labeled at various rates. See label for directions. REI: 12hour.
PHI: 7-day. FRAC M05.
Evito (3.98SC) (fluoxastrobin) | Rate depends on
formulation. Also available as Tepera and Aftershock. Do not
apply more than 4 applications per acre per year, with a
minimum re-treatment interval of 7-day between applications
REI: 12-hour. PHI: 3-day. FRAC 11.
Luna Sensation (fluopyram, trifloxystrobin) | 5.8 fl. oz. per
acre. Apply using ground, aerial or chemigation equipment.
Apply at the critical timings for disease control. Refer to
university and/or extension guidelines for best application
timings. Continue as needed on a 14-day interval. Do not
apply more that 15.3 fl. Oz. of Luna Sensation per acre per
year. Do not make more than 2 sequential application of Luna
sensation or any group 7 or group 11 containing fungicide
before rotating with fungicide from a different Group. REI:
12-hour. FRAC 07, FRAC 11.
phosphite and phosphorous acid products (phosphorous
acid, potassium phosphite, mono-dipotassium salts of
phosphorous acid, mono- and dibasic sodium, potassium,
and ammonium phosphites, fosetyl-aluminum) | Rates
vary depending on formulation. REI: 4 to 12-hour. PHI: 0day.
FRAC 33.
Quadris Opti (SC) (azoxystrobin, chlorothalonil) | 2.4-3.7
pts. per acre. REI: 12-hour. PHI: 7-day. FRAC 11, FRAC
M05.
Damping-Off Seed and Seedling Rots of
Multiple Crops - Multiple Pathogens
Michigan State University research has found Pythium spp.
causing damping-off of celery in greenhouses can result in
poor field establishment.
Non-Pesticide
Practice good greenhouse sanitation of equipment, tools
propagation trays/pots, and surfaces. Avoid excess moisture
to the transplants in the greenhouse by monitoring irrigation
frequency. Plant in warm field soils. The fungi responsible
for damping-off in field soils cause more loss when the
seedling is slow to emerge.
Pesticide
Ridomil Gold SL (4SC) (mefenoxam) | 1-2 pts. per acre.
Preplant incorporated (broadcast or band): Apply as a soil
application in sufficient water or liquid fertilizer to provide
Midwest Veg Guide 2022
Midwest Vegetable Guide - 2022

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