Midwest Vegetable Guide - 2022 - 126

Cucurbit Crops - Diseases
Pumpkin, Squash, Watermelon | 1.75-2.5 pts. per acre. Make
no more than 2 sequential applications before rotating to a
different mode of action. When 3 fungicide applications are
used, Orondis can be in no more than 33% of the
applications. Do not follow soil applications of Orondis Gold.
REI: 12-hour. PHI: 0-day. FRAC 49, FRAC M05.
Pristine 38WG (boscalid, pyraclostrobin)
Cantaloupe/Muskmelon, Cucumber, Watermelon | 12.5-18.5
oz. per acre. REI: 12-hour. PHI: 0-day. FRAC 07, FRAC 11.
Quadris Opti (SC) (azoxystrobin, chlorothalonil)
Cantaloupe/Muskmelon, Cucumber, Watermelon | 3.2 pts. per
acre. REI: 12-hour. PHI: 1-day. FRAC 11, FRAC M05.
Quadris Top (SC) (azoxystrobin, difenoconazole)
Cantaloupe/Muskmelon, Cucumber, Watermelon | 12-14 fl.
oz. per acre. REI: 12-hour. PHI: 1-day. FRAC 11, FRAC 03.
Tanos (DF) (famoxadone, cymoxanil)
Cantaloupe/Muskmelon, Cucumber, Watermelon | 8 fl. oz.
per acre. REI: 12-hour. PHI: 3-day. FRAC 11, FRAC 27.
Topsin 4.5FL (thiophanate-methyl)
Cantaloupe/Muskmelon, Cucumber, Watermelon | Use 4FL
formulation or Cercobin at 10 fl. oz. per acre, or 70WSB
formulation at 0.5 lb. per acre. REI: 24-hour to 3-day. PHI: 1day.
FRAC 01.
Zing! (zoxamide, chlorothalonil) Cantaloupe/Muskmelon,
Cucumber, Watermelon | 36 fl. oz. per acre. REI: 12-hour.
PHI: 0-day. FRAC 22, FRAC M05.
Bacterial Fruit Blotch of Cucurbits -
Acidovorax Bacteria
Pesticide
Actigard (0.5WDG) (acibenzolar-s-methyl)
Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash,
Watermelon | 0.5-1 oz. per acre. Apply with two of the fixed
copper product applications described for bacterial fruit
blotch. REI: 12-hour. PHI: 0-day. FRAC P01.
copper products (copper hydroxide, copper octanoate,
copper oxychloride, copper sulfate, copper diammonium
diacetate complex, cuprous oxide) Cantaloupe/Muskmelon,
Cucumber, Pumpkin, Squash, Watermelon | Copper products
(copper hydroxide, copper octanoate, copper oxychloride,
copper sulfate, copper diammonium diacetate complex,
cuprous oxide) mixed with mancozeb products (Dithane,
Manzate, Penncozeb) Cantaloupe/Muskmelon, Cucumber,
Pumpkin, Squash, Watermelon | Several formulations of
copper (Badge, Champ, Kocide) are labelled for use. See
label for directions. Apply fixed copper 2 weeks prior to the
opening of the first female bloom until fruit maturity. , at first
female bloom, and 2 weeks after the first female bloom. Later
in the season, fixed copper products may be applied to help
126
reduce disease spread. No more than 6 applications per
season. See labels for directions. REI: 4 to 48-hour. PHI: 0day.
FRAC M01. OMRI-listed.
Bacterial Wilt of Cucurbits - Erwinia
Bacteria
Primarily a disease of cucumber and melon. Pumpkins and
squash are only affected when striped and spotted beetles
feed on the plants at or before the 5 true leaf stage. Disease
control depends on control of striped and spotted cucumber
beetles. See insect section.
Pesticide
Insecticides Cantaloupe/Muskmelon, Cucumber, Pumpkin,
Squash | Apply systemic insecticides such as Admire or
Platinum (see insect section) at transplant. Apply contact
insecticides after systemic insecticides after systemic
insecticides lose effectiveness (2-3 weeks). Apply foliar
insecticides only when cucumber beetles are present. When
large numbers are present, treatments may be required twice
weekly. Scout fields regularly for cucumber beetles.
Damping-Off Seed and Seedling Rots of
Multiple Crops - Multiple Pathogens
Using treated seed may help reduce the severity of dampingoff
if used with the cultural methods discussed above. Seed
treated with contact fungicides with the active ingredients
thiram or captan may help reduce the decay of the seed prior
to emergence. Systemic products are designed to move into
the seedling and help manage damping-off in the first two to
three weeks. Examples of systemic products include Apron
XL, Dynasty, and Maxim 4FS. Seed that is treated with all
three of these systemic products is available with the trade
name Farmore 300. Vegetable seed that is usually
transplanted (such as muskmelon and watermelon) are less
likely to benefit from fungicide seed treatments than crops
that are direct seeded (such as pumpkin).
Non-Pesticide
Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash,
Watermelon | 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
Apron XL (3) (mefenoxam) Cantaloupe/Muskmelon,
Cucumber, Pumpkin, Squash, Watermelon | 0.085-0.64 fl. oz.
per 100 lb of seed. Seed treatment will help prevent dampingMidwest
Veg Guide 2022
Midwest Vegetable Guide - 2022

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