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Title: Vegetarian
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Place of Publication: Gainesville, Fla.
Publication Date: May 2009
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Vegetarian Newsletter

A Horticultural Sciences Department Extension Publication on Vegetable Crops

Eat your Veggies!!!!!

Issue No. 545 May 2009



Watermelon Fungicides 2009


By: Amanda J. Gevens, UF/IFAS Plant Pathology, Gainesville, FL and Pamela D. Roberts,
UF/IFAS Plant Pathology, SWFREC, Immokalee, FL


Managing disease in watermelon includes site and cultivar selection, irrigation management, row
spacing, and soil preparation. However, once the plants are in the ground, fungicides are an
important component of good disease management. The following table includes all of the
currently-labeled fungicides for common watermelon diseases in Florida. The list is organized
by disease, with products listed alphabetically. Products known to be highly effective have been
labeled with an asterisk (*).

FRAC, or the Fungicide Resistance Action Committee, was developed to help provide resistance
management guidelines for fungicide use. The FRAC codes help identify fungicides by their
mode of action and informs if they should be used in consecutive sprays. The FRAC codes for
each material are listed in the following table. (A simple way to remember what to use next in
your fungicide rotation is to use a labeled fungicide with a different FRAC number or letter.)

A good general fungicide program would be:

a) inspect transplants for health and quality before setting in the field.

b) apply Ridomil under the plastic for damping off (Pythium).

c) scout plants on a weekly basis (from transplant to harvest) for disease.

d) if diseases (such as Gummy Stem Blight or Downy Mildew) are found, it will be
necessary to get on a rotation program with one or more of the fungicides in the
following table.

e) it is a good practice to tank-mix systemic fungicides with protectants, such as Bravo or
Dithane.

f) routine applications of chlorothalonil (Bravo) alternated with mancozeb (Dithane) can
be made until fruit set.










Watermelon Fungicides 2009


Material (FRAC Rate Minimum Days
Disease codes) Formulation A.I. Harvest Re-entry Remarks
Angular Leaf *Fixed copper See label 0 0 Repeated use may cause
Spot (Ml) leaf yellowing
Bacterial Fruit *Fixed copper See label 0 0 Start applic. at first
Blotch (Ml) bloom; ineffective once
fruit reach full size.
Repeated use may cause
leaf yellowing.
Belly Rot or *Azoxystrobin See label See label 1 4 hr Make banded applic. to
Fruit Rot or (Amistar, soil surface or in-furrow
Rhizoctonia Rot Quadris, Heritage) applic. before seed are
2.08F (11) covered.
Chlorothalonil 1.8 lb/A 1.5 lb 0 12 hr Use in sufficient water to
(Bravo Ultrex) 6F a.i./A obtain adequate
(M5) coverage. Re-apply
every 7 days. Spraying
mature watermelon fruit
may result in sunburn of
upper surface.
Potassium See label See label 0 See label Check label for required
phosphates min. gal/A. Restrictions
(Fosphite, Fungi- are for use following
Phite, Prophyt, copper applic., plant and
Topaz) (33) environmental
conditions that restrict
use, and compatibility.
Thiophanate- 0.5 lb/A 0.35 lb/A 0.5 days Apply in sufficient water
methyl (Topsin to obtain run-off to soil
M) 70WP (1) surface.
Damping-off *Mefenoxam 1 to 2 pt/A 0.5 to 2 days Preplant incorporated
(Pythium) (Ridomil Gold, 1 lb/A (broadcast or band); soil
Ultra Flourish) (4) spray (broadcast or
band); or injection (drip
irrigation.
Potassium See label See label 0 See label Check label for required
phosphates min. gal/A. Restrictions
(Fosphite, Fungi- are for use following
Phite, Prophyt, copper applic., plant and
Topaz) (33) environmental
conditions that restrict
use, and compatibility
with other materials.
Propamocarb 12.8 fl 0.6 lb/100 2 0.5 days Rates based on rock
(Previcur Flex) 6F oz/100 gal gal wool cube saturation in
(28) the greenhouse. See
label for use in seed
beds, drip system, and
soil drench.










Material (FRAC Rate Minimum Days
Disease codes) Formulation A.I. Harvest Re-entry Remarks


Leaf Spots,
Alternaria,
Anthracnose
(Colletotrichum),
Cercospora,
Gummy Stem
Blight
(Didymella),
Target Spot
(Corynespora)


*Azoxystrobin
(Amistar,
Quadris, Heritage)
2.08 F (11)


11 to 15.4 fl
oz/A


0.18 to
0.25 lb/A


Make no more than 1
applic. before alternating
with a fungicide with a
different mode of action.
Apply no more than 2.88
qt/crop/A/season.


Bacillus spp. See label See label 0 0 Do not use product
(Serenade Max, alone. Apply with
Sonata, registered fungicide.
Rhapsody)
*Chlorothalonil 1.8-2.7 lb/A 1.5-2.2 lb 0 12 hr Use in sufficient water to
(Bravo Ultrex) 6F a.i./A obtain adequate
(M5) coverage. Re-apply
every 7 days. Spraying
mature watermelon fruit
may result in sunburn of
upper surface.
Copper (Ml) See label Repeated use may cause
leaf yellowing.
Famoxadone + 8 oz/A 4 oz/A 3 0.5 Only for Alternaria and
cymoxanil Anthracnose. Do not
(Tanos) 50WP make >1 applic. before
(11+27) alternating with a
fungicide of a different
mode of action. Must be
tank-mixed with a
contact fungicide.
Fenamidone 5.5 fl oz/A 0.178 lb/A 14 0.5 day Begin applic. when
(Reason) 500SC conditions favor disease
(11) and continue on 5- to 10-
day interval. Do not
apply >22 fl oz/season.
Alternate with fungicides
from different resistance
management groups, and
make <4 applic. of
Group 11 fungicides per
season.
*Kresoxim 4.8 oz 0 12 hr For Gummy Stem
methyl (Sovran) Blight. Follow
(11) resistance management
guidelines for Qol
fungicides.
*Mancozeb (M3) 2 to 3 lb/A 1.6 to 2.4 5 1 day Apply no more than 24
lb/A lb/A/season.
*Maneb (Maneb) 1.2 to 1.6 0.44 to 0.6 5 1 day Spray at first appearance
75DF (M3) lb/A lb/A and then at 7- to 10-day
intervals.


*Pyraclostrobin
(Cabrio) 20WG
(11)


12 to 16 oz/A


2.4 to 3.2
oz/A


Do not use for Gummy
Stem Blight where
resistance to Group 11
(Qol) fungicides exists.
Do not make >lapplic.
before alternating to a
fungicide with a
different mode of action.










Material (FRAC Rate Minimum Days
Disease codes) Formulation A.I. Harvest Re-entry Remarks
Leaf Spots, *Pyraclostrobin + 12.5 to 18.5 4.8 to 7 0 12 hr Not for Target Spot. Use
Alternaria, boscalid (Pristine) oz/A oz/A highest rate for
Anthracnose 38WG (11+7) Anthracnose. Make no
(Colletotrichum), more than 4 applications
Cercospora, per season.
Gummy Stem Tebuconazole 8 fl oz/A 0.22 lb/A 7 12 hr Gummy stem blight
Blight (Folicur) 3.6F suppression only.
(Didymella), Limited to 24 fl
Target Spot oz/A/crop/season.
(Corynespora) Thiophanate- 0.5 lb/A 0.35 lb/A 0.5 Spray at first appearance
(continued) methyl (Topsin and then at 7- to 10-day
M) 70WP (1) intervals.
Mancozeb + 1.5 to 2 lb/A 1.13 lb to 5 2 Begin applications when
Zoxamide (Gavel) 1.5 lb/A plants are in 2-leaf stage,
75DF (M3+22) and repeat at 7- to 10-
day intervals.


Azoxystrobin
(Amistar,
Quadris, Heritage)
2.08 F (11)


11 to 15.4 fl
oz/A


0.18 to
0.25 lb/A


Make no more than 1
applic. before alternating
with a fungicide with a
different mode of action.
Apply no more than 2.88
qt/crop/A/season.


Bacillus spp. See label See label 0 Do not use product
(Rhapsody, alone. Apply with
Serenade, Sonata) registered fungicide.
Chlorothalonil 1.8 lb/A 1.5 lb 0 12 hr Use in sufficient water to
(Bravo Ultrex) 6F a.i./A obtain adequate
(M5) coverage. Re-apply
every 7 days. Spraying
mature watermelon fruit
may result in sunburn of
upper surface.
*Cyazofamid 2.75 fl oz/A 0.071 lb/A 0 0.5 Do not apply >6
(Ranman) 400 CS sprays/crop. Make no
(21) more than 3 consecutive
applic. followed by 3
applic. of fungicides
from different resistance
management groups.
*Cymoxanil 3.2 oz/A 1.9 oz/A 3 0.5 Use only in combination
(Curzate) 60DF with labeled rate of
(27) protectant fungicide. No
more than 9 applic./12
months.
Dimethomorph 6.4 oz/A 3.2 oz/A 0 0.5 Apply only as a tank mix
(Acrobat, Forum) with another fungicide.
50WP (40) Do not make >2
sequential applic.


*Famoxadone +
cymoxanil
(Tanos) 50WP
(11+27)


8 oz/A


4 oz/A


Do not make >1 applic.
before alternating with a
fungicide that has a
different mode of action.
Must be tank mixed with
contact fungicide.


Downy Mildew










Material (FRAC Rate Minimum Days
Disease codes) Formulation A.I. Harvest Re-entry Remarks


Downy Mildew -
(continued)


*Fenamidone
(Reason) 500SC
(11)


5.5 fl oz/A


0.178 lb/A


Begin applications when
conditions favor disease
and continue on a 5- to
10-day interval. Do not
apply >22 fl oz/season.
Alternate with fungicide
from different resistance
management group, and
make no more than 4
total applic. of Group 11
fungicides/season.


Fixed copper See label Repeated use may cause
(Ml) leaf yellowing.
*Fluopicolide 3.0-4.0 fl 0.09-0.125 2 days 12 hrs Max rate is 4 fl
(Presidio) (43) oz/A lb a.i./A oz/A/applic. And 12 fl
oz/A/season. Apply no
more than 2 sequential
applic. Before
alternating to fungicide
of a different chemistry.
Fosetyl-Al 2 to 5 lb/A 1.6 to 2.4 0.5 0.5 Do not tank mix with
(Aliette) 80WDG lb/A coppers. Mixing with
(33) surfactants or foliar
fertilizers is not
recommended.
*Mancozeb (M3) 2 to 3 lb/A 1.6 to 2.4 5 1 Apply no more than 24
lb/A lb/A/season
*Mandipropamid 8 oz 0.13 0 12 hr Max of 4 applic. during
(Revus) (40) lb/a.i./A 1 crop cycle. Apply no
more than 2 sequential
applic. before alternating
to a fungicide of a
different chemistry. An
adjuvant is
recommended. Do not
use in transplant
production. 30 day plant
back restriction, unless
plant appears on label.
*Maneb (Maneb) 1.5 to 2 lb/A 0.44 to 0.6 5 1 Spray at first appearance
75DF (M3) lb/A and at 7-10-day
intervals.
*Mefenoxam + 2 to 3 lb/A 1.5 lb/A 7 2 Spray at first appearance
chlorothalonil and repeat at 14-day
(Ridomil Gold intervals. Apply full rate
Bravo, Fluoronil) of protectant fungicide
76.5WP (4+M5) between applic. Avoid
late-season applic., when
plants reach maturity.


Potassium
phosphates
(Fosphite, Fungi-
Phite, Prophyt,
Topaz) (33)


See label


See label


See label


Check label for required
min. gal/A. Restrictions
are for use following
copper applic., plant and
environmental
conditions that restrict
use, and compatibility
with other materials.










Material (FRAC Rate Minimum Days
Disease codes) Formulation A.I. Harvest Re-entry Remarks
Downy Mildew *Propamocarb 1.2 pt/A 0.9 lb/A 2 0.5 Begin applic. before
(continued) (Previcur Flex) 6F infection; continue on a 7-
(28) to 14-day interval. Do not
apply >6 pt/season.
Always tank mix with
another downy mildew
product.
*Pyraclostrobin 8 to 12 oz/A 1.6 to 2.4 0 0.5 Do not make >1 applic.
(Cabrio) 20WG oz/A before alternating to a
(11) fungicide with a different
mode of action.
*Pyraclostrobin + 12.5 to 18.5 4.8 to 7 0 12 hr Not for Target Spot. Use
boscalid (Pristine) oz/A oz/A highest rate for
38WG (11+7) Anthracnose. Make no
more than 4 applications
per season.
Trifloxystrobin 4 oz/A 2 oz/A 0 0.5 Begin applic.
(Flint) 50WDG preventatively and
(11) continue as needed
alternating applic. of
Ridomil Gold Bravo on a
7-10-day interval.
*Mancozeb + 1.5 to 2 lb/A 1.13 to 1.5 5 2 Begin applic. when plants
Zoxamide (Gavel) lb/A are in 2-leaf stage, and
75DF (22+M3) repeat at 7-10-day
intervals.
Phytophthora Cyazofamid 2.75 fl oz/A 0.071 lb/A 0 0.5 Do not apply >6 sprays/
Blight (Ranman) 400SC crop. Make no more than
(21) 3 consecutive applic.
followed by 3 applic. of
fungicides from different
resistance management
groups.
Dimethomorph 6.4 oz 3.2 oz 0 0.5 Must be applied as a tank
(Acrobat, Forum) mix with another
50WP (15) fungicide active against
Phytophthora Blight. Do
not make >2 sequential
applic.
*Fluopicolide 3.0-4.0 fl 0.09-0.125 2 days 12 hrs Max rate is 4 fl
(Presidio) (43) oz/A lb a.i./A oz/A/applic. And 12 fl
oz/A/season. Apply no
more than 2 sequential
applic. Before alternating
to fungicide of a different
chemistry.
*Mandipropamid 8 oz 0.13 0 12 hr Max of 4 applic. during 1
(Revus) (40) lb/a.i./A crop cycle. Apply no
more than 2 sequential
applic. before alternating
to a fungicide of a
different chemistry. An
adjuvant is recommended.
Do not use in transplant
production. 30 day plant
back restriction, unless
plant appears on label.










Material (FRAC Rate Minimum Days
Disease codes) Formulation A.I. Harvest Re-entry Remarks
Phytophthora Potassium See label See label 0 See label Check label for required
Blight phosphates min. gal/A. Restrictions
(continued) (Fosphite, Fungi- are for use following
Phite, Prophyt, copper applic., plant and
Topaz) (33) environmental
conditions that restrict
use, and compatibility
with other materials.


*Azoxystrobin
(Amistar,
Quadris, Heritage)
2.08 F (11)


11 to 15.4 fl
oz/A


0.18 to
0.25 lb/A


Make no more than 1
applic. before alternating
with a fungicide with a
different mode of action.
Apply no more than 2.88
qt/crop/A/season.


Chlorothalonil 1.8-2.7 lb/A 1.5-2.2 lb 0 12 hr Use in sufficient water to
(Bravo Ultrex) 6F a.i./A obtain adequate
(M5) coverage. Re-apply
every 7 days. Spraying
mature watermelon fruit
may result in sunburn of
upper surface.
Copper (Ml) See label Repeated use may cause
leaf yellowing.
Horticultural Oils See label See label See label for specific
(JMS Stylet Oil, application techniques
Sporan, Neem required.
Oil)
*Kresoxim 3.2-4.8 oz 0 12 hr Follow resistance
methyl (Sovran) management guidelines
(11) for Qol fungicides.
*Myclobutanil 2.5 to 5 oz/A 1 to 2 oz/A 0 1 Apply no more than 1.5
(Nova, Rally) lb/A/crop. Observe 30-
40WP (3) day plant back interval.
*Pyraclostrobin 8 to 12 oz/A 1.6 to 2.4 0 0.5 Do not make >1 applic.
(Cabrio) 20WG oz/A before alternating to a
(11) fungicide with a
different mode of action.
*Pyraclostrobin + 12.5 to 18.5 4.8 to 7 0 12 hr Not for Target Spot. Use
boscalid (Pristine) oz/A oz/A highest rate for
38WG (11+7) Anthracnose. Make no
more than 4 applications
per season.
*Quinoxyfen 4-6 fl oz/A 3 days 12 hr Do not make more than
(Quintec) (13) 4 applic./season. Rotate
fungicide chemistries to
avoid resistance
_development.
*Sulfur (M2) See label 0 1 Do not use when temps.
are over 900F or on
sulfur-sensitive varieties.


Tebuconazole
(Folicur) 3.6F


4-6 fl oz/A


0.11-0.17
lb/A


12 hr


Follow label for
resistance management
guidelines. Limited to
24 fl oz/A/crop/season.


Powdery Mildew










Material (FRAC Rate Minimum Days
Disease codes) Formulation A.I. Harvest Re-entry Remarks


Powdery Mildew
- (continued)


*Thiophanate-
methyl (Topsin
M) 70WP (1)


0.5 lb/A


0.35 lb/A


Spray at first appearance
and then at 7- to 10-day
intervals.


*Trifloxystrobin 1.5 to 2 oz/A 0.75 to 1 0 0.5 Begin applic.
(Flint) 50WDG oz/A preventatively and
(11) continue as needed on a
7-14-day interval. Do
not apply >lapplic.
before alternating with a
non-strobilurin
fungicide.


*Triflumizole
(Procure) 50WS
(3)


4 to 8 oz


2 to 4 oz


Begin applic. at vining
or first sign of disease,
and repeat at 7-14-day
intervals.










Vegetarian Newsletter


A Horticultural Sciences Department Extension Publication on Vegetable Crops

Eat your Veggies!!!!!

Issue No. 545 May 2009



Identification and Management of Gummy Stem Blight
on Watermelon

By: Amanda J. Gevens, Extension Plant Pathology, UF/IFAS Plant Pathology,
Gainesville, FL


Regional Report

Gummy stem blight was identified on a few north central Florida farms in early April.
Symptoms included lesions on lower stems and crowns with characteristic gummy, amber-brown
colored ooze emerging from cracked stem tissue. Rain and high winds favor spread of the spores
that cause this watermelon disease. It is important to include protectant fungicides in your spray
program to prevent initial infection.

Symptoms

Leaf symptoms often begin as circular, tan to dark brown spots at leaf edges; spots enlarge
rapidly until entire leaf is blighted. Spots can occur on both cotyledons and true leaves. Water-
soaking may occur on hypocotyls and leaves. Stem cankers develop in the cortical tissue, and
amber-brown colored gummy exudates is often produced on the stem surface. Small, black
fungal fruiting bodies may be visible on cankers. Stems may be girdled and seedlings killed.
When infection occurs in older plants, lesions develop slowly on stems near the center of the hill.
Cankered vines typically wilt mid-season. Small, watersoaked spots can develop on infected
fruit which can coalesce and enlarge to cover fruit. Fruit lesions may also exude gummy
material. The spots typically contain the small, black fruiting bodies.

Pathogen

Gummy stem blight is caused by the fungus Didymella bryoniae. Dark fruiting bodies, or
pycnidia, of the anamorph, Phoma cucurbitacearum, form on the surface of leaves, stems, and
fruits. The conidia are hyaline, cylindrical with rounded ends and are non- or mono-septate.
Dark pseudothecia may also form, especially on stems. Pseudothecia produce numerous asci
which generate hyaline, monoseptate ascospores. The fungus grows in culture between 12 and
320C., with an optimum temperature of 240C.










Disease cycle


The pathogen can overwinter on infected vines and crop debris, and may be seedborne. The
optimum temperature for infection is 200C in melon and 34-250C in watermelon and cucumber.
Moisture is critical for disease development. Peak ascospore dispersal occurs after rain and
during dew periods at night. Free moisture on leaves for <1 hour is necessary for infection, and
extended wetness is essential for lesion expansion. Cotyledons and young leaves of watermelon
and melon are very susceptible. Some cucumber and squash varieties have resistance, and may
only become susceptible as they mature.

Management

Seed should be treated prior to plant. A minimum 2-year crop rotation cycle is also
recommended to limit potential infection. There are currently no resistant cultivars of
watermelon, melon, or cucumber. Minimization of leaf wetness by using drip irrigation and
allowing proper plant spacing can help limit disease. Fungicides can be very effective in
managing gummy stem blight; however, timing of applications is important. Fungicides are
particularly effective when applied in advance of infection. A table of effective fungicides for
cucurbit gummy stem blight follows this article. Products known to be highly effective have
been labeled with an asterisk (*).


Material Rate Minimum Days
Disease (FRAC codes) Formulation A.I. Harvest Re-entry Remarks
Gummy Stem *Azoxystrobin 11 to 15.4 fl 0.18 to 1 4 hr Make no more than 1
Blight (Didymella (Amistar, oz/A 0.25 lb/A applic. before alternating
bryoniae) Quadris, with a fungicide with a
Heritage) 2.08 F different mode of action.
(11) Apply no more than 2.88
qt/crop/A/season.
Bacillus spp. See label See label 0 0 Do not use product
(Serenade Max, alone. Apply with
Sonata, registered fungicide.
Rhapsody)
*Chlorothalonil 1.8-2.7 lb/A 1.5-2.2 lb 0 12 hr Use in sufficient water to
(Bravo Ultrex) a.i./A obtain adequate
6F (M5) coverage. Re-apply
every 7 days. Spraying
mature watermelon fruit
may result in sunburn of
upper surface.
Copper (Ml) See label Repeated use may cause
leaf yellowing.
Famoxadone + 8 oz/A 4 oz/A 3 0.5 day Only for Alternaria and
cymoxanil Anthracnose. Do not
(Tanos) 50WP make >1 applic. before
(11+27) alternating with a
fungicide of a different
mode of action. Must be
tank-mixed with a
contact fungicide.












Material Rate Minimum Days
Disease (FRAC codes) Formulation A.I. Harvest Re-entry Remarks
Fenamidone 5.5 fl oz/A 0.178 14 0.5 day Begin applic. when
(Reason) 500SC lb/A conditions favor disease
(11) and continue on 5- to 10-
day interval. Do not
apply >22 fl oz/season.
Alternate with fungicides
from different resistance
management groups, and
make <4 applic. of
Group 11 fungicides per
season.
*Kresoxim 4.8 oz 0 12 hr For Gummy Stem
methyl (Sovran) Blight. Follow
(11) resistance management
guidelines for Qol
fungicides.
*Mancozeb 2 to 3 lb/A 1.6 to 2.4 5 1 day Apply no more than 24
(M3) lb/A lb/A/season.
*Maneb 1.2 to 1.6 0.44 to 5 1 day Spray at first appearance
(Maneb) 75DF lb/A 0.6 lb/A and then at 7- to 10-day
(M3) intervals.
*Pyraclostrobin 12 to 16 oz/A 2.4 to 3.2 0 0.5 day Do not use for Gummy
(Cabrio ) 20WG oz/A Stem Blight where
(11) resistance to Group 11
(Qol) fungicides exists.
Do not make >lapplic.
before alternating to a
fungicide with a
different mode of action.
*Pyraclostrobin 12.5 to 18.5 4.8 to 7 0 12 hr Not for Target Spot. Use
+ boscalid oz/A oz/A highest rate for
(Pristine) Anthracnose. Make no
38WG (11+7) more than 4 applications
per season.
Tebuconazole 8 fl oz/A 0.22 lb/A 7 12 hr Gummy stem blight
(Folicur) 3.6F suppression only.
Limited to 24 fl
oz/A/crop/season.
Thiophanate- 0.5 lb/A 0.35 lb/A 0.5 day Spray at first appearance
methyl (Topsin and then at 7- to 10-day
M) 70WP (1) intervals.
Mancozeb + 1.5 to 2 lb/A 1.13 lb to 5 2 Begin applications when
Zoxamide 1.5 lb/A plants are in 2-leaf stage,
(Gavel) 75DF and repeat at 7- to 10-
(M3+22) day intervals.











Vegetarian Newsletter

A Horticultural Sciences Department Extension Publication on Vegetable Crops

Eat your Veggies!!!!!

Issue No. 545 May 2009




New Hydroponic Short Course at North Florida Research
and Education Center-Suwannee Valley Rousing Success


By: Robert Hochmuth, Multi-County Extension Agent, North Florida Research and Education
Center-Suwannee Valley



An intensive two day short course and optional grower tour was held in March at the
North Florida Research and Education Center Suwannee Valley. The popularity in
registrations led to a second course being offered the same week. In all, 70 attendees
were able to learn about "Starting a Successful Hydroponic Business". Attendees came
from all over Florida but also from Ohio, New York, Alabama, and Georgia. Most
attendees were prospective or very new commercial growers, but six County Extension
faculty and three UF students were also able to participate.

Attendees were able to learn about most topics through hands-on experiences in the greenhouses. Important
classroom topics included business planning and marketing. Topics inside the greenhouse production area included:
greenhouse structures, culture under open shade areas, season extension, soilless media selection, floating systems,
nutrient film technique (NFT), growing microgreens, production containers, vertical culture, water and nutrient
management, integrated pest management (IPM), selecting vegetable, herb, and cut flower crops, an organic
production in greenhouses.

A follow-up survey being conducted indicates attendees rated the short course value very high and encouraged us to
offer that course again to other new growers. In addition 100% of respondents want additional intensive single day
training as well. The two top requests were clearly fertilizer and pest management.

As a result, we plan to offer the course for new growers in March, 2010 and the
intensive classes in November, 2009. Growers will select one of three days for the
advanced topic class.

Special thanks to all NFREC-SV faculty and staff for making the event such a success.
Additional thanks to Dr. Comerford, for his leadership and Al Wysocki, George
Hochmuth, Tim Carpenter (Verti-Gro) and Tim Blank (Future Growing), Linda
Landrum, Wanda Laughlin, and Lei Lani Davis for helping teach the workshops.
[Bob Hochmuth]










Vegetarian Newsletter

A Horticultural Sciences Department Extension Publication on Vegetable Crops

Eat your Veggies!!!!!

Issue No. 545 May 2009



Water and Nutrient Management Web Sites

By: Thomas Obreza, Associate Dean for Extension and Eric Simonne, Northeast District
Extension Director, UF/IFAS, Gainesville, Florida


Below is a list of selected reference websites presented at a recent Elluminate in-service training.
The list is of course non-exhaustive.

General
Site: Alabama Cooperative Extension Water Program
URL: http://www.aces.edu/waterquality/faq/faq.htm
Content: Frequently-Asked Questions.

Site: USDA's Water Quality Information Center
URL: http://grande.nal.usda.gov/wqic/
Content: An on-line library of a wide variety of water-related documents.

Site: Water Footprint
URL: http://www.waterfootprint.org/?page=files/home
Content: Human impacts on fresh water systems

Drinking Water
Site: EPA's main drinking water site
URL: http://www.epa.gov/safewater/
Content: All kinds of drinking water information from a national perspective.

Site: EPA's list of drinking water contaminants
URL: http://www.epa.gov/safewater/contaminants/index.html
Content: List of all drinking water contaminants tracked by EPA and their maximum contaminant
levels (MCL).









Irrigation
Site: California Agricultural Technology Institute's Center for Irrigation Technology
URL: http://cati.csufresno.edu/cit/index.html
Content: A wide variety of irrigation resources.

Site: The Irrigation Association
URL: http://www.irrigation.org/
Content: An industry-oriented web site with a wide variety of irrigation information.

Site: Crop evaptranspiration Guidelines for computing crop water requirements FAO irrigation
and drainage paper 56
URL: http://www.fao.org/docrep/X0490E/X0490E00.htm
Content: The basics on principles and practices of irrigation scheduling

Water Quality
Site: Fla. Dept. of Environmental Protection Water Programs
URL: http://www.dep.state.fl.us/water/default.htm
Content: Front door to information about FDEP's many water programs.

Best Management Practices
Site: Fla. Dept. of Agr. and Consumer Services Office of Agricultural Water Policy
URL: http://www.floridaagwaterpolicy.com/
Content: Agricultural BMP manuals produced by FDACS in PDF format, plus other
environmental education resources.

Site: Fla. Dept. of Environmental Protection
URL: http://www.dep.state.fl.us/water/nonpoint/pubs.htm
Content: Non-agricultural BMP manuals produced by FDEP in PDF format, plus other
environmental education resources.

Soil Maps and Information
Site: USDA-NRCS Web Soil Survey
URL: http://websoilsurvey.nrcs.usda.gov/app/HomePage.htm
Content: Obtain an on-line soil map and technical information about soils (such as water-holding
capacity). This site replaces the old paper copies of soil survey reports, but it does have some
scanned soil surveys that can be downloaded in PDF format.

Site: Florida Soil Characterization Data Retrieval System
URL: http://flsoils.ifas.ufl.edu/
Content: A comprehensive soil data set including soil profile descriptions, soil taxonomic
information, geographic coordinates, and 144 different physical and chemical soil properties. The
dataset includes about 1,300 profiles distributed across 58 Florida counties.









Watersheds
Site: EPA's "Surf Your Watershed"
URL: http://cfpub.epa.gov/surf/locate/index.cfm
Content: Allows you to drill down to your watershed and find water quality information about it.

Site: Conservation Technology Information Center's "Know Your Watershed"
URL: http://www2.ctic.purdue.edu/kyw/
Content: Basic information about watersheds from a national perspective.

Site: Everglades restoration
URL: http://www.evergladesplan.org/index.aspx
Content: Everything you want to know about Everglades restoration, but were afraid to ask.

Water Management Districts
Northwest Florida: http://www.nwfwmd. state.fl.us/
Suwannee River: http://www.srwmd.state.fl.us/
St. Johns River: http://sir.state.fl.us/
South West Florida: http://www.swfwmd.state.fl.us/
South Florida: http://www.sfwmd.gov/

Plant Nutrients
Site: USDA's "Nutrient Content of Crops: Nutrients Removed By Harvest"
URL: http://npk.nrcs.usda.gov/
Content: A tool for calculating the approximate amount of nitrogen, phosphorus, and potassium
that is removed by the harvest of agricultural crops.

Site: FDACS Bureau of Compliance Monitoring Fertilizer sales reports
URL: http://www.flaes.org/complimonitoring/reports.html
Content: Records of the amounts and types of fertilizers (classified by "farm" or "non-farm") sold
in each Florida county.

Site: Agro Services International
URL: http://www.agroservicesinternational.com/Software/Software.html
Content: Fertilizer calculator: A spreadsheet in Excel format to calculate fertilizer blends.

Site: International Plant Nutrient Institute
URL: http://www.ipni.net/
Content: Lots of information, resource material, and web links related to fertilizer use, focusing on
N, P, and K.

Site: The Fertilizer Institute
URL: http://www.tfi.org/
Content: TFI is the trade organization representing the fertilizer industry. Their web site contains
lots of resource material about fertilizers and their use.




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