Midwest Vegetable Guide - 2022 - 89

Celery - Diseases
Fertilizing
pH: Maintain the soil pH above 5.5 in muck soils and 6.5 in
mineral soils.
Before planting, apply 40 pounds N per acre, 0 to 230 pounds
P2O5 per acre, and 0 to 500 pounds K2O per acre based on
soil test results and recommendations from your state. Celery
is responsive to B. Apply 2 to 4 pounds of B per acre in
banded or broadcast fertilizer to avoid stem cracking.
Banding fertilizer at transplanting can help when soil is less
than 55° F. In these cases, band up to 40 pounds N per acre,
up to 100 pounds P2O5 per acre, and up to 40 pounds K2O per
acre, and subtract those amounts from the preplant
application.
Sidedress with 40 to 50 pounds N per acre two or three times,
three or four weeks apart, starting six weeks after
transplanting, or apply equivalent amount of N through
fertigation. Reduce the amount of fertilizer N applied by the
value of N credits from green manures, legume crops grown
in the previous year, compost and animal manures, and soils
with more than 3 percent organic matter. The total amount of
N from fertilizer (including starter) and other credits should
be 200 pounds per acre on mineral soils and 150 pounds per
acre on muck soils
Use overhead sprinkler or drip irrigation to apply water
frequently to the shallow-rooted crop. If the soil gets too dry,
physiological disorders such as blackheart (a calcium
deficiency), will develop.
Harvesting
Once celery reaches marketable size, there is a narrow
harvest window (about six to eight days) before quality
declines significantly. Both fresh market and processing celery
can be harvested either by hand or mechanically. Time from
transplanting to harvest ranges between 100 and 130 days.
Harvest celery by pulling the entire plant. Cut off the roots and
trim the tops. Wash if necessary and cool quickly with water
or forced air. Maintain a cold chain to market for best quality.
Ideal storage conditions are near freezing and high humidity.
Celery - Diseases
Reviewed by Dan Egel, Mary Hausbeck - Sept 2021
Recommended Controls
Anthracnose of Celery - Colletotrichum
Fungus
Disease and symptom development are favored by periods of
warm temperatures (>68 F) combined with high humidity.
Symptoms include curled/cupped leaves, sporadic leaf
margin discoloration, twisted petioles and small, oval lesions
on petioles. Symptoms of anthracnose can be confused with
those associated with aster yellows except that the affected
foliage remains green.
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.
Cabrio EG (20) (pyraclostrobin) | 12-16 oz. per acre. Do
not apply more than 0.8 lb a.i. pyraclostrobin (64 oz. Cabrio)
per acre per season. Do not make more than two (2)
sequential applications of Cabrio before alternating to a
labeled non-Group 11 fungicide with a different mode of
action. REI: 12-hour. PHI: 0-day. FRAC 11.
Merivon (fluxapyroxad, pyraclostrobin) | 4-11 fl. oz. per
acre. REI: 12-hour. PHI: 1-day. FRAC 07, FRAC 11.
Pristine 38WG (boscalid, pyraclostrobin) | 10-15 oz. per
acre. REI: 12-hour. PHI: 0-day. FRAC 07, FRAC 11.
Rhyme (2.08SC) (flutriafol) | 5-7 fl. oz. per acre. Apply
preventively or when conditions are favorable for disease
development. Do not apply more than 4 applications per year.
REI: 12-hour. PHI: 7-day. FRAC 03.
Topguard EQ (SC) (flutriafol, azoxystrobin) | 6.0-8.0 fl.
oz. per acre. Not a single application may exceed 8 fl. Oz. of
product per acre. Do not apply more than 4 applications per
year. REI: 12-hour to 3-day. PHI: 0-day. FRAC 03, FRAC
11.
Midwest Veg Guide 2022
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Midwest Vegetable Guide - 2022

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