Midwest Vegetable Guide - 2022 - 157

Fruiting Vegetables - Diseases
Pageant Intrinsic (boscalid, pyraclostrobin) Eggplant,
Pepper | Rates are as follow per acre: Powdery mildew at 9.718
oz.; gray mold at 23 oz. Do not apply on seedlings meant
for transplanting in the field. REI: 12-hour. PHI: 0-day.
FRAC 07, FRAC 11.
Pageant Intrinsic (boscalid, pyraclostrobin) Tomato | Rates
are as follows per acre.: Gray mold, 23 oz.; anthracnose and
early blight 12.25-23 oz. Labeled for greenhouse-/high
tunnel-grown tomatoes. Do not apply on seedlings meant for
transplanting in the field. For Pythium and Rhizoctonia spp.
use 12-18 oz. per 100 gals. water. Do not apply on seedlings
meant for transplanting in the field. REI: 12-hour. PHI: 0day.
FRAC 07, FRAC 11.
Scala (SC) (5) (pyrimethanil) Tomato | 7 fl. oz. per acre.
Tank-mix with another fungicide. Allow greenhouse/high
tunnel to ventilate for 2 hours. REI: 12-hour. PHI: 1-day.
FRAC 09.
Switch 62.5WG (cyprodinil, fludioxonil) Eggplant, Pepper,
Tomato | 11-14 oz. per acre. Do not apply to small fruited
varieties in the greenhouse. REI: 12-hour. PHI: 0-day. FRAC
09, FRAC 12.
Late Blight of Potatoes/Tomatoes -
Phytophthora Oomycete
This destructive pathogen causes quick plant death and can
be identified by large spreading brown to black stem lesions,
velvety white growth on plant surfaces, and large brown
leathery spots on green fruits. It is favored by prolonged cool
and damp conditions.
The pathogen overwinters on plant residue, including
volunteer potatoes and potato cull piles. The first step to
manage this disease is monitoring and destroying cull and
volunteer potato emergence in the spring. When it is reported
in your region, begin weekly preventive sprays with
chlorothalonil and mancozeb for as long as favorable
conditions persist. Pay attention to which pathogen strain is
identified. If infections start in a field, the strain US-23 is
sensitive to mefenoxam (Ridomil).
Biofungicide products like Double Nickel, Regalia, Serifel,
Serenade, Sonata, and Stargus can be included in a
conventional spray program to reduce the number of
synthetic fungicides or in an organic program with OMRIlisted
copper products. See labels for instructions.
Non-Pesticide
Tomato | Avoid fields with a history the disease. Rotate to
non-Solanaceous crops (including potatoes) for 3-4 years.
Use raised beds, staking, pruning, and mulch to improve
drainage, air flow, and reduce splashing. Prompt destruction
of the infected crop or finished crop with tillage to rapidly
breakdown tissue is an important method to prevent disease
build-up. In small plantings, remove infected plants from the
field and dispose in a sealed trash container, or burn.
Anaerobic soil disinfestation (ASD) is an effective biological
treatment for greenhouse and high tunnel soils that contain
this pathogen.
Pesticide
chlorothalonil products (chlorothalonil) Tomato | Several
formulations of chlorothalonil (Bravo, Echo, Equus, Initiate,
Omni, Oranil, Praiz) are labeled at various rates. See label for
directions. REI: 12-hour. PHI: 0-day. FRAC M05.
copper products (copper hydroxide, copper octanoate,
copper oxychloride, copper sulfate, copper diammonium
diacetate complex, cuprous oxide) Tomato | Several
formulations of copper (Badge, Champ, Kocide) are labelled
for use and may improve efficacy of fungicides against
Phytophthora blight when tank mixed at labeled rates. See
label for directions. REI: 4 to 48-hour. PHI: 0-day. FRAC
M01. OMRI-listed.
Flint (50) (trifloxystrobin) Eggplant, Pepper, Tomato |
Application rates depend on formulation, product and crop.
Gem 500 SC is available at the same rates as Flint. Flint
Extra may have different rates. REI: 12-hour. PHI: 3-day.
FRAC 11.
Forum (4.17SC) (dimethomorph) Eggplant, Pepper | 6 fl.
oz. per acre. REI: 12-hour. PHI: 0-day. FRAC 40.
Gavel 75DF (zoxamide, mancozeb) Tomato | 1.5-2 lbs. per
acre. REI: 48-hour. PHI: 5-day. FRAC 22, FRAC M03.
mancozeb products (mancozeb) Pepper | Several
formulations of mancozeb (Dithane, Manzate, Penncozeb) are
labeled at various rates. See label for directions. REI: 24hour.
PHI: 5-day. FRAC M03.
Mural (WG) (azoxystrobin, benzovindiflupyr) Tomato |
0.6 oz. per 1,000 sq. ft. Tomato Transplants for Home
Consumer Market. REI: 12-hour. PHI: 0-day. FRAC 11,
FRAC 07.
Orondis Opti Premix (SC) (oxathiapiprolin,
chlorothalonil) Tomato | 1.75-2.5 pt. per acre. REI: 12-hour.
PHI: 3-day. FRAC 49, FRAC M05.
Orondis Ultra Premix (SC) (oxathiapiprolin,
mandipropamid) Tomato | 5.5-8.0 fl. oz. per acre. Alternate
with fungicides that have a different mode of action. Use
either soil applications or foilar applications of
oxathiapiproplin products, but not both. REI: 4-hour. PHI: 1day.
FRAC 49, FRAC 40.
Presidio (4SC) (fluopicolide) Eggplant, Pepper, Tomato | 34
fl. oz. per acre. Must be tank-mixed with a product with a
Midwest Veg Guide 2022
157
Midwest Vegetable Guide - 2022

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