Southeastern U.S. Vegetable Crop Handbook - 2022 - 300

DISEASE CONTROL
TABLE 3-45. GREENHOUSE DISEASE CONTROL FOR VARIOUS VEGETABLE CROPS (cont'd)
R. A. Melanson, Extension Plant Pathologist, Mississippi State University; A. Keinath, Plant Pathologist, Clemson University;
A. Cato, Extension Horticulture IPM, University of Arkansas; I. Meadows, Extension Plant Pathologist, North Carolina State University
Crop/Disease
Botrytis rot (Botrytis spp.),
early blight (A. linariae 2
),
powdery mildew (L. taurica,
O. sipula)
Suppression:
Anthracnose (C. coccodes)
LETTUCE
Downy mildew
(Bremia lactucae)
acibenzolar-S-methyl
(Actigard
50WG)
21
0.75 to 1 oz/acre
7
0.5
Not prohibited for greenhouse use. For use on head and leaf
lettuce. Product should be applied to healthy, actively growing
plants. Product should not be applied to stressed plants. Do not
apply more than one application of product on head lettuce intended
for bag purposes. Do not apply prior to thinning or within 5
days of transplanting. See label for other instructions, restrictions,
and precautions.
Anthracnose, downy mildew,
leaf spot, powdery mildew,
Septoria leaf spot
Downy mildew (Bremia lactucae),
Pythium damping-off
(Pythium spp.), white rust
(Albugo occidentalis)
copper, fixed
(various)
cyazofamid
(Ranman 400SC)
M01
21
See label
2.75 fl oz/acre
See
label
See
label
0.5
Some products are OMRI-listed. See product labels for complete
application instructions, specific crop and disease labels, and
greenhouse usage. Check state registration status prior to use.
Not prohibited for greenhouse use. For use on head and leaf
lettuce. Do not exceed 16.5 fl oz of product or 0.43 lb cyazofamid
per acre per year. Do not apply more than six applications of product
per crop. Alternate applications with a fungicide from a different
FRAC group. See label for additional application instructions
specific to each disease and regarding resistance management
and tank-mixing.
Downy mildew
(Bremia lactucae)
Alternaria leaf spot (Alternaria
spp.), gray mold (B. cinerea),
Sclerotinia rot (Sclerotinia
spp.), basal rot (B. exigua),
Septoria leaf spot (Septoria
lactucae)
Suppression: Powdery
mildew (Golovinomyces cichoracearum
2
)
Botrytis gray mold rot (B.
cinerea), drop rot, Sclerotinia
minor, watery soft rot (Sclerotinia
sclerotiorum)
Downy mildew (B.
lactucae), white rust (A.
occidentalis)
dicloran
(Botran 5F)
14
See label
14
0.5
For use on head and leaf lettuce. Product has different application
rates for at planting, pre-thinning, and post-thinning and established
transplants. See label for detailed application instructions.
Do not exceed 3.2 qt of product per acre per year. Not registered
for use in VA or WV.
famoxadone +
cymoxanil
(Tanos)
11+27
8 to 10 oz/acre
1
0.5
Not prohibited for greenhouse use. For use on head and leaf
lettuce. Product must be tank-mixed with a contact fungicide with
a different mode of action. Do not exceed 48 oz of product per
acre per crop season. Do not make more than one application
of product before alternating with a fungicide that has a different
mode of action. See label for tank mixing instructions. No more
than 50% of total applications in cropping season should contain
Tanos or other FRAC Group 11 fungicides.
Gray mold
(B. cinerea)
fenhexamid
(Decree 50
WDG)
1
2
17
1.5 lb/acre
(stand-alone)
1.0 to 1.5 lb/acre
(tank-mix)
3
0.5
For use in transplant production and greenhouse production.
Do not make more than two consecutive applications. See label
for additional tank-mixing instructions. Do not exceed 3.0 lb
product per acre (transplants) or per acre per crop (greenhouse
production).
Products registered for field use may be used on greenhouse crops (but not transplants) unless excluded on the label. Always check the label before applying a product.
Additional products not prohibited for greenhouse use on basil, cucurbits, and lettuce not listed in this table are available.
Former names of diseases and pathogens listed in this table that may be still be listed on fungicide labels are as follows: Acidovorax citrulli (formerly Acidovorax avenae
subsp. citrulli) Alternaria linariae (formerly A. solani and A. tomatophila); Athelia rolfsii (formerly Sclerotium rolfsii); Golovinomyces spp. (formerly Erysiphe spp.) or Golovinomyces
cichoracearum (formerly Erysiphe cichoracearum); Fulvia fulva (formerly Cladosporium fulvum and Passalora fulva); Boeremia exigua (formerly Phoma exigua);
Plectosphaerella cucumerina (formerly Plectosporium tabacinum); Podosphaera xanthii (formerly Sphaerotheca fuliginea); Stagonosporopsis spp. (formerly Didymella);
Xanthomonas leaf spot (formerly bacterial leaf spot); and (Xanthomonas cucurbitae (formerly X. campestris pv. cucurbitae).
cymoxanil
(Curzate 60 DF)
cyprodinil +
fludioxonil
(Switch 62.5WG)
9+12
27
3.2 to 5.0 oz/acre
(head)
5.0 oz/acre (leaf)
11 to 14 oz/acre
3
(head)
1 (leaf)
0.5
0.5
Not prohibited for greenhouse use. For use on head and leaf
lettuce. Use only with the labeled rate of a protectant fungicide.
Do not exceed 30 oz of product per 12-month period. Curzate not
registered for use in LA.
Not prohibited for greenhouse use. For use on head and leaf
lettuce. After two applications, alternate with another fungicide
with a different mode of action for two applications. Do not exceed
56 oz of product per acre per year. See label for application limits
of active ingredients.
Product 1
polyoxin D
zinc salt
FRAC Rate of Material
EGGPLANT AND PEPPER - TRANSPLANT PRODUCTION (CONT'D)
19
(Affirm WDG)
6.2 oz/acre
Minimum Days
Harv.
-
Reentry
4 hr
Method, Schedule, and Remarks
Allowed for use in greenhouses ONLY in the production
of seedlings and transplants; product is not for use in the
production of edible commodities. See product labels for maximum
limits of active ingredient and applications per season. See
product labels for additional application instructions and labeled
diseases
300
2022 Vegetable Crop Handbook for Southeastern United States
Southeastern U.S. Vegetable Crop Handbook - 2022

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