Southeastern U.S. Vegetable Crop Handbook - 2021 - 263

DISEASE CONTROL
TABLE 3-33. DISEASE CONTROL PRODUCTS FOR SPINACH (cont'd)
Z. Hansen, Plant Pathologist, University of Tennessee
Disease
Damping off
(Pythium spp.)
Material
cyazofamid
(Ranman)
mefenoxam
(Ridomil Gold)
(Ultra Flourish)
metalaxyl (various)
oxathiapiprolin + mefenoxam
(Orondis Gold)
phosphorous acid (monoand
di-potassium salts)
(Reliant, Fungi-Phite)
Seedling blight, damping
off, root rot (Pythium
spp., Rhizoctonia solani)
Downy mildew
(Peronospora fainosa f.
sp. spinaciae)
azoxystrobin + mefenoxam
(Uniform)
ametoctradin + dimethomorph
(Zampro)
cymoxanil
(Curzate)
dimethomorph
(Forum)
mandipropamid
(Revus)
oxathiapiprolin
(Orondis Gold 200)
phosphorous acid (mono- and
di-potassium salts)
(Reliant, Fungi-Phite)
polyoxin D zinc salt
(OSO 5%SC)
Downy mildew
(Peronospora fainosa
f. sp. spinaciae),
white rust (Albugo
occidentalis)
acibenzolar-S-methyl
(Actigard)
cyazofamid
(Ranman)
famoxadone + cymoxanil
(Tanos)
FRAC
Code
21
4
1 to 2 pt/acre
2 to 4 pt/acre
4
49+4
P07
11 + 4
45 + 40
27
40
40
4 to 8 pt/acre
13.9 to 27.8 fl oz/
acre
1 to 2 qt/acre
0.34 fl oz/
1,000 row ft
14 fl oz/acre
5 oz/acre
6 fl oz/acre
8 fl oz/acre
21
21
-0
1
1
2
2
4
hr
0.5
0.5
0.5
4 hr
Rate of Material
Formulation
2.75 fl oz/acre
Minimum Days
Harv. Reentry
21
0.5
2
Method, Schedule, and Remarks
Apply to soil in a banded application or in transplant water
at time of transplanting.
Broadcast or banded over the row as a soil spray or preplant
incorporation into the top two inches of soil. For Ultra
Flourish, PHI=3 days only if soil applications do not exceed
4 pt/A and foliar mefenoxam applications do not exceed
0.25 lb a.i./A, otherwise PHI=21 days.
Broadcast or banded over the row as a soil spray or preplant
incorporation into the top two inches of soil.
Apply using any of the following methods: in-furrow, transplant
water, banded spray, and drip irrigation. If using drip
irrigation, delay until after emergence.
Do not apply more than 6 times per crop cycle.
Apply as an in-furrow spray in 5 gal of water per acre prior
to covering seed. Make only application per season.
Do not apply with or in rotation with mandipropamid or
dimethomorph.
Apply with a protectant fungicide. Apply no more than 30
oz per acre in a 12-month period. Not labeled for use in
Louisiana.
Do not apply with or in rotation with mandipropamid.
Make no more than 2 consecutive applications before
alternating with a fungicide with a different mode of action.
Apply no more than 32 fl oz/acre/season. Do not apply with
or in rotation with dimethomorph.
49 + 4 4.8 to 9.6 fl oz/acre
4 hr
Apply at planting in furrow or by drip, or in subsequent drip
irrigation. Make no more than 2 consecutive applications
before alternating with a fungicide with a different mode of
action. Do not apply more than 19.2 fl oz/acre per year.
P07
19
21
21
11+27
1 to 2 qt/acre
3.75 to 13 fl oz/acre
0.5 to 0.75 oz/acre
2.75 fl oz/acre
8 to 10 oz/acre
7
1
4 hr
4 hr
0.5
0.5
0.5
Do not apply more than 6 times per crop cycle.
Do not make more than 6 applications per season at the
maximum-labeled rate.
Do not apply to young seedlings or plants stressed due to
drought, excessive moisture, cold weather, or herbicide
injury.
Do not make more than 3 consecutive applications before
alternating to a fungicide with a different mode of action.
Must be tank-mixed with a contact downy mildew fungicide
with a different mode of action. Make no more than 1
application before alternating with a fungicide with a different
mode of action. Apply no more than 84 oz/acre per
cropping season.
fenamidone
(Reason 500SC)
fixed copper (various)
fluopicolide
(Presidio)
fluxapyroxad + pyraclostrobin
(Merivon)
11
M
43
7 + 11
5.5 to 8.2 fl oz/acre
See labels
3 to 4 fl oz/acre
4 to 11 fl oz/acre
2
2
1
0.5
2
0.5
0.5
Make no more than 1 application before alternating with
a fungicide with a different mode of action. Apply no more
than 24.6 fl oz/acre per cropping season.
Some formulations of copper may cause leaf flecking.
Tank mix with another downy mildew fungicide with a
different mode of action. Apply as a foliar spray or in drip
irrigation.
Do not tank-mix Merivon with any pesticides, adjuvants,
fertilizers, nutrients, or any other additives. Do
not make more than 2 consecutive applications before rotating
to a labeled non-Group 7 or non-Group 11 fungicide.
Make no more than 3 applications per season.
2021 Vegetable Crop Handbook for Southeastern United States
263
Southeastern U.S. Vegetable Crop Handbook - 2021

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