Southeastern U.S. Vegetable Crop Handbook - 2022 - 323

DISEASE CONTROL
PHI
(days)
REI
Greenhouse
Use
TABLE 3-53. BIOPESTICIDES, FUNGICIDE, AND NEMATICIDE ALTERNATIVES FOR VEGETABLES (cont'd)
R. A. Melanson, Extension Plant Pathologist, Mississippi State University
Active Ingredient 1
Product 1
Target Diseases/Pests
tea tree oil
Timorex Gold
(Stockton)
thyme oil
Promax, Proud 3
(Huma Gro and Fertilgold/Bio
Huma Netics);
Thyme Guard
(Agro Research
International)
Trichoderma harzianum
Rifai strain T-22
RootShield WP,
RootShield Granules
(BioWorks)
Various foliar diseases (see label
for list)
2
12 hr
See
label
OMRIListed
Comments 2
Yes
Do not spray when temperatures are above 95°F.
Do not exceed 1.54 lb tea tree oil per acre per
use season. See label for additional instructions,
restrictions, and cautions. Timorex Gold is not
registered for use in KY, OK, TN, or WV. FRAC
BM01.
See label
See label
See
label
See
label
Yes
See specific product labels for instructions, cautions,
and restrictions. Check state registration
status of products prior to use.
Root pathogens (such as Pythium,
Rhizoctonia, and Fusarium)
See label
See
label
Yes
Yes
Products are for use in soil or planting applications
or seed or propagative material treatments.
Product should not be applied to chickpea. Not
for use on aquatic crops. See product labels for
instructions and restrictions on various application
uses and for information on compatibility.
Trichoderma
harzianum Rifai
strain KRL-AG2
Trianum-G, Trianum-P
(Koppert
Biological
Systems)
Soilborne or root pathogens
(such as Pythium, Rhizoctonia,
and Fusarium)
See label
See
label
Yes
No
Products are for use in soil or planting mix
applications or seed or propagative material
treatments. Products should not be applied to
chickpea. Not for use on aquatic crops. Check
product labels to determine if product can be
applied when aboveground harvestable food
is present. See product labels for instructions on
various application uses and on compatibility with
other products. Check state registration status
of products prior to use.
Trichoderma
harzianum Rifai
strain T-22 +
T. virens strain
G-41
Trichoderma spp. (T.
asperellum strain ICC
012 and T. gamsil
strain ICC 080)
Ulocladium oudemansii
strain U3
Yeast extract hydrolysate
from Saccharomyces
cerevisiae
1
2
3
RootShield
PLUS+
Granules,
RootShield
PLUS+
WP
(BioWorks)
BIO-TAM 2.0 (SePRO)
BotryStop
(BioWorks)
KeyPlex
350 OR
(KeyPlex)
Certain fungal diseases (see
label)
Botrytis spp. and Sclerotinia spp.
(see label for crop-specific
diseases)
bacterial leaf spot (tomatoes)
Soilborne or root pathogens
(such as Pythium, Rhizoctonia,
and Fusarium)
See label
(Granules)
(WP)
See
label
See
label
See label 4 hr
See label 4 hr
Yes
Not prohibited
Not
prohibited
Yes
Yes
No
See
label
Yes
Yes
Products
are for use in soil or planting mix applications
or seed or propagative material treatments.
Products should not be applied to chickpea. Not
for use on aquatic crops. See product labels for
instructions on various application uses and on
compatibility with other products.
See label for a list of incompatible fungicides and
county restrictions in AR, OK, and TX. Check
state registration status of Tenet prior to use.
Product should be stored in a cool, dry place at or
below 68°F. See label for tank-mixing and application
instructions.
See product labels for instructions on various
application uses. Check state registration
status prior to use.
Data on efficacy is limited or not available for many products listed in this table. Therefore, products listed in this table are not recommendations based on efficacy. Other
active ingredients or products may also be available
Consult product labels to determine vegetables for which a particular product is labeled.
Former names of diseases and pathogens listed in this table that may be still be listed on fungicide labels are as follows: Athelia rolfsii (formerly Sclerotium rolfsii); Fulvia
fulva (formerly Cladosporium fulvum and Passalora fulva); Xanthomonas vesicatoria (formerly Xanthomonas campestris pv. vesicatoria).
FUNGICIDE RESISTANCE MANAGEMENT
The Fungicide Resistance Action Committee (FRAC, https://www.frac.info/) has
organized fungicides according to FRAC groups, which reflect chemical structure
and Mode of Action (MoA). Fungicides within a given FRAC group control fungi in a
similar manner and share the same risk for fungicide resistance development. Some
fungicides are referred to as high- or at-risk fungicides because of their specific MoA's
and therefore have a high risk for resistance development.
Groups of fungicides, such as the QoI's (FRAC group 11) or Phenylamides (FRAC
group 4) are prone to resistance development due to very specific MoA's. Fungicides
in high- or at-risk groups should be rotated and/or tank-mixed with broad spectrum,
protectant fungicides (FRAC group M3 or M5) to delay the development of resistant
strains of fungi. For more information on fungicide resistance management see:
http://www.frac.info/
2022 Vegetable Crop Handbook for Southeastern United States
323

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Southeastern U.S. Vegetable Crop Handbook - 2022

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