Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and...
Transcript of Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and...
![Page 1: Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and 3‐13‐29 (tomato special) • Water volume the same for each treatment • Amount of](https://reader035.fdocuments.in/reader035/viewer/2022071004/5fc1bdc3af454d5dba422113/html5/thumbnails/1.jpg)
Hydroponics11:00‐12:30 FineTuningNutrientSolu;onandIrriga;onManagement
2:00‐3:00 ChoosingVarie;esforHydroponicProduc;on
4:30‐5:30 BiologicalandChemicalInsectControlinGreenhouses
![Page 2: Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and 3‐13‐29 (tomato special) • Water volume the same for each treatment • Amount of](https://reader035.fdocuments.in/reader035/viewer/2022071004/5fc1bdc3af454d5dba422113/html5/thumbnails/2.jpg)
The 2012 Educational Program Committee is pleased to share conference educational materials with you under the condition that they are used without alteration for educational and non-commercial use only. All materials are protected by copyright law. The authors kindly request their work is properly cited, including the date of publication. For more information on Small Farms, visit our website at: http://smallfarms.ifas.ufl.edu or contact your local County Extension Agent. For inquiries about this topic, please contact: Danielle Treadwell, Educational Program Chair. Phone: (352)-273-4775 E-mail: [email protected] Suggested Citation: Author Full Name. Title of Presentation or Handout. 2012 University of Florida-IFAS and Florida Agricultural and Mechanical University-CAFS Florida Small Farms and Alternative Enterprises Conference. July 27-29, Kissimmee, FL.
![Page 3: Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and 3‐13‐29 (tomato special) • Water volume the same for each treatment • Amount of](https://reader035.fdocuments.in/reader035/viewer/2022071004/5fc1bdc3af454d5dba422113/html5/thumbnails/3.jpg)
Floa;ngHydroponicLeJuceManagement
RonnieSchnellJuly28,2012
![Page 4: Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and 3‐13‐29 (tomato special) • Water volume the same for each treatment • Amount of](https://reader035.fdocuments.in/reader035/viewer/2022071004/5fc1bdc3af454d5dba422113/html5/thumbnails/4.jpg)
Floa;ngHydroponicSystems
![Page 5: Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and 3‐13‐29 (tomato special) • Water volume the same for each treatment • Amount of](https://reader035.fdocuments.in/reader035/viewer/2022071004/5fc1bdc3af454d5dba422113/html5/thumbnails/5.jpg)
Op;mumNutrientSolu;on• Whatistheop;mumNrateforfloa;nghydroponicleJuce
produc;on?• Createdarangeofnutrientconcentra;ons
– 0,22,56,91,125,159,193ppmN– UsingCaNO3and3‐13‐29(tomatospecial)
• Watervolumethesameforeachtreatment• Amountofnutrientsolu;onaddedchanges• CreatedECvaluesfrom0.5to3.0mSpluscontrol(wateronly)• WhatistheeffectonleJuceyield,andquality?• WillhighlevelsofNinsolu;onresultinhighlevelsofNO3in
;ssue?• Color?
![Page 6: Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and 3‐13‐29 (tomato special) • Water volume the same for each treatment • Amount of](https://reader035.fdocuments.in/reader035/viewer/2022071004/5fc1bdc3af454d5dba422113/html5/thumbnails/6.jpg)
GreenhouseExperiment
![Page 7: Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and 3‐13‐29 (tomato special) • Water volume the same for each treatment • Amount of](https://reader035.fdocuments.in/reader035/viewer/2022071004/5fc1bdc3af454d5dba422113/html5/thumbnails/7.jpg)
ImpactofFer;lizerTreatmentsonEC
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
4.50
5.00
0 7 14 21 28 33
ECm
S
Daysa*erTransplan1ng
193ppmN
159ppmN
125ppmN
91ppmN
56ppmN
22ppmN
0ppmN
![Page 8: Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and 3‐13‐29 (tomato special) • Water volume the same for each treatment • Amount of](https://reader035.fdocuments.in/reader035/viewer/2022071004/5fc1bdc3af454d5dba422113/html5/thumbnails/8.jpg)
LeJuceYield
![Page 9: Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and 3‐13‐29 (tomato special) • Water volume the same for each treatment • Amount of](https://reader035.fdocuments.in/reader035/viewer/2022071004/5fc1bdc3af454d5dba422113/html5/thumbnails/9.jpg)
LeJuceColor
![Page 10: Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and 3‐13‐29 (tomato special) • Water volume the same for each treatment • Amount of](https://reader035.fdocuments.in/reader035/viewer/2022071004/5fc1bdc3af454d5dba422113/html5/thumbnails/10.jpg)
LeJuceColorandYield
![Page 11: Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and 3‐13‐29 (tomato special) • Water volume the same for each treatment • Amount of](https://reader035.fdocuments.in/reader035/viewer/2022071004/5fc1bdc3af454d5dba422113/html5/thumbnails/11.jpg)
TissueNO3‐NConcentra;on
![Page 12: Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and 3‐13‐29 (tomato special) • Water volume the same for each treatment • Amount of](https://reader035.fdocuments.in/reader035/viewer/2022071004/5fc1bdc3af454d5dba422113/html5/thumbnails/12.jpg)
Solu1onStrengthN(ppm)
22 56 91 125 159 193
Poundsaddedper1000gallonsofsolu;on
N 0.19 0.47 0.75 1.04 1.33 1.61
P2O5 0.10 0.25 0.40 0.56 0.71 0.86
K2O 0.42 1.06 1.71 2.36 3.00 3.65
Ca 0.16 0.41 0.66 0.92 1.17 1.42
Mg 0.09 0.24 0.38 0.53 0.67 0.82
AmountofNutrientsAdded
1000gal=400d2about4inchdepthofsolu;on400plants@1plantpersqd
![Page 13: Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and 3‐13‐29 (tomato special) • Water volume the same for each treatment • Amount of](https://reader035.fdocuments.in/reader035/viewer/2022071004/5fc1bdc3af454d5dba422113/html5/thumbnails/13.jpg)
NitrogenUptakeEfficiency
![Page 14: Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and 3‐13‐29 (tomato special) • Water volume the same for each treatment • Amount of](https://reader035.fdocuments.in/reader035/viewer/2022071004/5fc1bdc3af454d5dba422113/html5/thumbnails/14.jpg)
PhosphorusUptakeEfficiency
![Page 15: Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and 3‐13‐29 (tomato special) • Water volume the same for each treatment • Amount of](https://reader035.fdocuments.in/reader035/viewer/2022071004/5fc1bdc3af454d5dba422113/html5/thumbnails/15.jpg)
PotassiumUptakeEfficiency
![Page 16: Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and 3‐13‐29 (tomato special) • Water volume the same for each treatment • Amount of](https://reader035.fdocuments.in/reader035/viewer/2022071004/5fc1bdc3af454d5dba422113/html5/thumbnails/16.jpg)
SummaryofNutrientSupply
• 90‐125ppmN or• 0.75‐1.0lbsper1000galofN• Abouta2:1:4ra;o(N‐P2O5‐K2O)• SupplysufficientNfor400leJuceplants
– Op;mizeyieldandquality– Minimizenitrateaccumula;on
![Page 17: Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and 3‐13‐29 (tomato special) • Water volume the same for each treatment • Amount of](https://reader035.fdocuments.in/reader035/viewer/2022071004/5fc1bdc3af454d5dba422113/html5/thumbnails/17.jpg)
EffectofRainfall• Largeraineventswilldilutethesolu;on• Withoutoverflow,nutrientsares;llthere• Atwhatpointorlevelofdilu;onwouldadjustmentsbeneededtothegrowingsolu;on?
• Startedwith125ppmN(EC~1.5)• Imposedtheequivalentofa0.5,1.0,1.5,2.0,2.5and3.0inchrain
• Comparedtocontrol(nowateradded)• Totalamountofavailablenutrientdoesnotchange,watervolumedoes
• MeasuredleJuceyield,qualityandnutrientuptake
![Page 18: Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and 3‐13‐29 (tomato special) • Water volume the same for each treatment • Amount of](https://reader035.fdocuments.in/reader035/viewer/2022071004/5fc1bdc3af454d5dba422113/html5/thumbnails/18.jpg)
![Page 19: Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and 3‐13‐29 (tomato special) • Water volume the same for each treatment • Amount of](https://reader035.fdocuments.in/reader035/viewer/2022071004/5fc1bdc3af454d5dba422113/html5/thumbnails/19.jpg)
Dilu;onEffect–SimulatedRainfall
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
1.60
1.80
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
ECm
S
DaysA*erTransplan1ng
3.0in
2.5in
2.0in
1.5in
1.0in
0.5in
0in
![Page 20: Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and 3‐13‐29 (tomato special) • Water volume the same for each treatment • Amount of](https://reader035.fdocuments.in/reader035/viewer/2022071004/5fc1bdc3af454d5dba422113/html5/thumbnails/20.jpg)
LeJuceYield
![Page 21: Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and 3‐13‐29 (tomato special) • Water volume the same for each treatment • Amount of](https://reader035.fdocuments.in/reader035/viewer/2022071004/5fc1bdc3af454d5dba422113/html5/thumbnails/21.jpg)
NUptakeEfficiency
![Page 22: Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and 3‐13‐29 (tomato special) • Water volume the same for each treatment • Amount of](https://reader035.fdocuments.in/reader035/viewer/2022071004/5fc1bdc3af454d5dba422113/html5/thumbnails/22.jpg)
EffectsofDilu;onbyRain
• Inaddi;ontoyieldandNuptake:– DidnotimpactPofKuptakeefficiencies– DidnotimpactnitratelevelsinleJuce;ssue– Didnotimpactcolor
![Page 23: Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and 3‐13‐29 (tomato special) • Water volume the same for each treatment • Amount of](https://reader035.fdocuments.in/reader035/viewer/2022071004/5fc1bdc3af454d5dba422113/html5/thumbnails/23.jpg)
Whatdoesthismeanformanagement?
• Star;ngwiththerightamountofnutrientsiscri;cal.
• Fluctua;onsinwatervolumewillnotimpactyieldorquality.
• Maintainingasufficientamountofwaterisnecessary.
• Overflowoftanksresul;nginmasslossofnutrientscouldreduceyieldandquality.
![Page 24: Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and 3‐13‐29 (tomato special) • Water volume the same for each treatment • Amount of](https://reader035.fdocuments.in/reader035/viewer/2022071004/5fc1bdc3af454d5dba422113/html5/thumbnails/24.jpg)
WhentoReplenish
• ThemajorityofNandKwereconsumed.
• Smallerpropor;onsofappliedP,Ca,andMgconsumed.
• Findingtheperfectmixmaybedifficult.
• Replenishadereachharvest.
• Periodicflush
![Page 25: Hydroponics - University of Floridaconference.ifas.ufl.edu/smallfarms12/PDFs and... · 3 and 3‐13‐29 (tomato special) • Water volume the same for each treatment • Amount of](https://reader035.fdocuments.in/reader035/viewer/2022071004/5fc1bdc3af454d5dba422113/html5/thumbnails/25.jpg)
Summary
• 90‐125ppmNO3‐Nwasop;mumforproduc;on
• 0.75–1lbNper1000gal=400plantsor• 0.2–0.25lbofactualNper100plants• Maintainaminimumwaterlevel• Noneedtoadjustforfluctua;onsinwaterlevelduetorains.
• Replenishnutrientsadereachharvest.