Midwest Vegetable Guide - 2022 - 132

Cucurbit Crops - Diseases
breakdown tissue and displace nematodes is an important
method to prevent nematode build-up. Anaerobic soil
disinfestation (ASD) is an effective sterilization method for
greenhouse and high tunnel soils that contain nematodes.
Pesticide
K-PAM HL (5.8L) (metam potassium)
Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash,
Watermelon | 30-62 gals. per acre. Use high rates on muck,
and lower rates on sands. In the fall, when soil at 6 inches is
above 50 F and moist, place K-PAM HL or Sectagon K54
about 8 inches beneath the surface through shank-injectors, or
broadcast sprayers directly in front of tillage tools to bury it.
Seal with soil packing or irrigation. Or, in the spring, it can
be applied through drip irrigation under unperforated plastic
beds. Before planting, allow product to dissipate for 1 week
for every 10 gals. per acre plus 1 more week. REI: 5-day.
IRAC 08F, FRAC M03, HRAC NC. RUP.
Nimitz (4EC) (fluensulfone) Cantaloupe/Muskmelon,
Cucumber, Pumpkin, Squash, Watermelon | 3.5-7 pts. per
acre. Do not use on direct-seeded plants. May be broadcast,
banded, or drip-applied in the spring up to 7 days before
planting at a depth of 8 inches. Effectiveness is reduced on
muck and clay soils. REI: 12-hour. IRAC UN.
Telone C-17 (L) (1,3-dichloropropene, chloropicrin)
Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash,
Watermelon | Muck soils: Use C-17 formulation at 27.4-30
gals. per acre, and C-35 formulation at 33-36 gals. per acre.
Mineral soils: Use C-17 formulation at 10.8-17.1 gals. per
acre, and C-35 formulation at 13-20.5 gals per acre. In the
fall, when soil at 6 inches is above 50 F and moist, place
Telone C-17 or C-35 about 8 inches beneath the surface
through shank-injectors, or broadcast sprayers directly in
front of tillage tools to bury it. Seal with soil packing,
irrigation, or plastic. Or, in the spring, InLine may be applied
through drip irrigation under unperforated plastic beds at 1320.5
gals. per acre, on mineral soils only. Before planting,
allow product to dissipate for 1 week for every 10 gals. per
acre plus 1 more week. REI: 3-5-day. IRAC UN, FRAC NC,
IRAC 08B. RUP.
Telone II (9.85L) (1,3-dichloropropene)
Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash,
Watermelon | Muck soils: Use at 25 gals. per acre. Mineral
soils: Use at 9-12 gals. per acre. In the spring or fall, when
soil at 6 inches is above 50 F and moist, place Telone II about
8 inches beneath the surface through shank-injectors, or
broadcast sprayers directly in front of tillage tools to bury it.
Seal with soil packing or irrigation. Or, in the spring, Telone
EC may be applied through drip irrigation under unperforated
plastic beds at 9-18 gals. per acre on mineral soils only.
Before planting, allow product to dissipate for 1 week for
every 10 gals. per acre plus 1 more week. REI: 5-day. IRAC
UN, FRAC NC. RUP.
132
VAPAM HL (4.25L) (metam sodium)
Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash,
Watermelon | 37.5-75 gals. per acre. Use high rates on muck,
and lower rates on sands. In the fall, when soil at 6 inches is
above 50 F and moist, place VAPAM HL or Sectagon K42
about 8 inches beneath the surface through shank-injectors, or
broadcast sprayers directly in front of tillage tools to bury it.
Seal with soil packing or irrigation. Or, in the spring, it can
be applied through drip irrigation under unperforated plastic
beds. Before planting, allow product to dissipate for 1 week
for every 10 gals. per acre plus 1 more week. REI: 5-day.
IRAC 08F, FRAC M03, HRAC NC. RUP.
Velum Prime (4.16SC) (fluopyram)
Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash,
Watermelon | 6.5-6.84 fl. oz. per acre. Apply through drip
irrigation. Do not exceed 13.7 fl. oz. per acre per season.
Allow 5 days between applications. REI: 12-hour. PHI: 0day.
FRAC 07.
Vydate L (2WSL) (oxamyl) Cantaloupe/Muskmelon,
Cucumber, Pumpkin, Squash, Watermelon | Apply 1-2 gals.
per acre as a banded or shank-injected pre-plant, at-plant infurrow
or directed post-plant soil treatment with at least 20
gals. water per acre incorporated 2-4 inches deep by water or
mechanical means, or drip chemigate 2-4 pts. per acre after
transplanting. Allow 14 days between applications. Do not
exceed 8 total applications, or 3 gals. per acre per season.
REI: 48-hour. PHI: 1-day. IRAC 01A. RUP.
Phytophthora Blight of Multiple Crops -
Phytophthora Oomycete
Phytophthora may cause damping-off, vine infection, and
fruit rot in cucurbits. It is often associated with heavy rains
and fields with poor drainage. The first symptoms are usually
observed in low areas. It has a wide host range of crops and
weeds, including peppers, tomatoes, beans, nightshades and
velvetleaf. Ponds and streams with run-off water from
infested soil may be contaminated with Phytophthora.
At planting, direct-seeded crops benefit from fungicidetreated
seed (see discussion of fungicide seed treatment under
Damping-off). Treat seed with Apron XL LS to help prevent
Phytophthora infection for 5 weeks from time of seeding. At
vine touch, apply contact or systemic fungicides at first sign
of the disease. Systemic fungicides are available.
At harvest, if you touch an infected fruit, disinfest your hands
(using soap or ethanol) before touching an uninfected fruit.
Do not place uninfected fruits on soil infested with
Phytophthora.
Non-Pesticide
Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash,
Watermelon | Avoid fields with a history of the disease and
excess water. Improve drainage with raised beds. Reduce
Midwest Veg Guide 2022
Midwest Vegetable Guide - 2022

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