BioKenaF: A crop growth simulation model for kenaf September “27-30” 2006 Madrid, Spain “A...
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BioKenaF: A crop growth simulation model for kenaf
September “27-30” 2006
Madrid, Spain“A Crop Growth Dynamic Simulation Model for Kenaf”
University of Thessaly
Department of Agriculture, Crop Production &
Agricultural Environment
Laboratory of Agronomy and Applied Crop Physiology
(UTH) Greece
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Model structure
Leaf Photosynthesis
Canopy Photosynthesis
Respiration
Dry Matter distribution
Water balance routine
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Leaf Photosynthesis
The relation between available radiation and CO2 gross assimilation by a single leaf is described by an asymptotic exponential relation
FG = AMAX * ( 1 − EXP(− EFF*PAR/AMAX) )
FG: assimilation in kg(CO2)ha-1(leaf)h-1
PAR: photosynthetically active radiation(J m-2s-1)
EFF: is the light use efficiency in kg ha-1h-1/J m-2s-1
AMAX: maximum rate of CO2 assimilation in kg(CO2)ha-1(leaf)h-1.
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Canopy Photosynthesis
EXTRA TERRESTIAL IRRADIANCE
GLOBAL RADIATION
PAR
PARDIR
PARDIF
VIS
As. Rate of sunlit leaves
As. Rate of shadedleaves
TotalAssimilation
Rate
Integration
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Respiration
Maintenance respiration (MRR): Energy consumed to meet maintenance requirements.
MRRorg=Rorg*Sorg
Growth respiration (EC): Respiration providing energy for the conversion of primary photosynthesis into structural plant materials like, proteins, cellulose, fats, lignin.
DWIorg=DailyGainorg*EC
Maintenance respiration (MRR): Energy consumed to meet maintenance requirements.
MRRorg=Rorg*Sorg
Growth respiration (EC): Respiration providing energy for the conversion of primary photosynthesis into structural plant materials like, proteins, cellulose, fats, lignin.
DWIorg=DailyGainorg*EC
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Dry matter distribution (Daily basis)
Total Assimilation
Rate
CarbohydrateAs. Rate(FGASS)
Rate of NET Potential
As.
Maintenance Respiration
DWI LEAF - ECleaf
DWI STEM - ECStem
DWI SHEATH - ECSheath
DWI ROOTS - ECRoot
DWI S. ORGANS -ECSO-
* FRorg
DVSDVS
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BioKenaF: Relation diagramLightTemp
Photosynthesis
Developmentrate
Developmentstage
Partitioningcoefficients
Assimilatepool
Maintenancerespiration
BIOMASS
STEMS
ST. ORGANS
PETIOLES
ROOTS
LEAVES
LAI
Gro
wth
CONV.EFF.
SLA
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BioKenaF: Relation Diagram
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Application
HARDWARE
• Processor: AMD ATHLON XP 2800+
• Motherboard: Gigabyte 7N400-Pro
• RAM: 1 GB 400 Mhz
• Hard disk: W.Digital 160 GB
• Graphics: GA 6600 GT 128 MB Ram
SOFTWARE
• Microsoft Visual Basic 6
• Microsoft Excel 2000
• Helexis Icon Catcher v3.0
• Microsoft Paint for windows XP
SIMULATION TIME
4 sec
13 sec including exportation to MS Excel
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BioKenaF application
Interface
Input Form
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BioKenaF application
Soil Type
Input Form
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BioKenaF application
Irrigation
Data
Manager
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BioKenaF application
Editor of Meteorological
Data Files
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Results
total
stem
leaves
petioles
Palamas- Karditsa (Greece) Year 2003, 100% Irrigation
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Results
Palamas- Karditsa (Greece) Year 2003, 50% Irrigation
0
5000
10000
15000
20000
25000
150 200 250 300 350J. Day
Kg
r / h
a
total
stem
leavespetioles
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Results
Palamas- Karditsa (Greece) Year 2003, 25% Irrigation
0
5000
10000
15000
20000
25000
150 200 250 300 350
J. Day
Kg
r /
ha total
stem
leavespetioles
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Results
Italy Bolognia Year 2003, potential productivity
Sowing date 19/6/2003
0
5000
10000
15000
20000
25000
150 200 250 300 350
J. DayK
gr
/ h
a
Sowing date 19/5/2003
0
5000
10000
15000
20000
25000
150 200 250 300 350
J. Day
Kg
r / h
a
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Results
Italy Bolognia Year 2004, potential productivity
2004 S1
0
5000
10000
15000
20000
25000
150 200 250 300 350 400
J. Day
Kgr /
ha
2004 S2
0
5000
10000
15000
20000
25000
150 200 250 300 350 400
J. Day
Kgr /
ha
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Results
totalstem
leavespetioles
France- Nicae Year 2005, potential productivity
0,00
5000,00
10000,00
15000,00
20000,00
25000,00
150 200 250 300 350
J. Day
Kg
r /
ha
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Results
Greece Year 2003
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Results
Greece Year 2004
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Results
Greece Year 2005
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Results
Bolognia Year 2003
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Results
Bolognia Year 2003
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Results
France Year 2004
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Results
Summary
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Missing Data
WheatherLocation Year TMAX TMIN Radiation Precipitation Wind RH Day of Emer. Harvests Irrigation Soil Type G. Water
Portugal 2003 X X X X X X X X X X X
2004 X X X X X X X X X X X
2005 X X X
Catania 2003 X X X X
2004 Problem
X X
2005 X X
Spain 2003 X X X X X X
2004 X X X X X X
2005 X X X X X X
Greece 2003 ? X X X X X
CETA 2004 ? X X X X
2005 X X ? X X X X X X X
France 2003 X X X X X X X X X X
2004 X X X X X X X X X X
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Thank you for your attention !