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BioKenaF: A crop growth simulation model for kenaf

University of Thessaly Department of Agriculture, Crop Production & Agricultural Environment Laboratory of Agronomy and Applied Crop Physiology (UTH) Greece. BioKenaF: A crop growth simulation model for kenaf. September “27-30” 2006 Madrid, Spain

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BioKenaF: A crop growth simulation model for kenaf

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  1. University of Thessaly Department of Agriculture, Crop Production & Agricultural Environment Laboratory of Agronomy and Applied Crop Physiology (UTH) Greece BioKenaF: A crop growth simulation model for kenaf September “27-30” 2006 Madrid, Spain “A Crop Growth Dynamic Simulation Model for Kenaf”

  2. Model structure • Leaf Photosynthesis • Canopy Photosynthesis • Respiration • Dry Matter distribution • Water balance routine

  3. 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.

  4. Canopy Photosynthesis EXTRA TERRESTIAL IRRADIANCE GLOBAL RADIATION As. Rate of sunlit leaves PARDIR Integration Total Assimilation Rate VIS PAR As. Rate of shaded leaves PARDIF

  5. 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

  6. Dry matter distribution (Daily basis) Total Assimilation Rate DVS DWI LEAF - ECleaf DWI STEM - ECStem Carbohydrate As. Rate (FGASS) Rate of NET Potential As. * FRorg DWI SHEATH - ECSheath DWI ROOTS - ECRoot DWI S. ORGANS -ECSO - Maintenance Respiration

  7. BioKenaF: Relation diagram Light Temp LAI Photosynthesis SLA LEAVES Development rate STEMS Partitioning coefficients Development stage ST. ORGANS Assimilate pool BIOMASS PETIOLES Growth Maintenance respiration CONV. EFF. ROOTS

  8. BioKenaF: Relation Diagram

  9. 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

  10. BioKenaF application Interface Input Form

  11. BioKenaF application Soil Type Input Form

  12. BioKenaF application Irrigation Data Manager

  13. BioKenaF application Editor of Meteorological Data Files

  14. Results total stem leaves petioles Palamas- Karditsa (Greece) Year 2003, 100% Irrigation

  15. total stem leaves petioles Results Palamas- Karditsa (Greece) Year 2003, 50% Irrigation

  16. total stem leaves petioles Results Palamas- Karditsa (Greece) Year 2003, 25% Irrigation

  17. Results Italy Bolognia Year 2003, potential productivity

  18. Results Italy Bolognia Year 2004, potential productivity

  19. Results total stem leaves petioles France- Nicae Year 2005, potential productivity

  20. Results Greece Year 2003

  21. Results Greece Year 2004

  22. Results Greece Year 2005

  23. Results Bolognia Year 2003

  24. Results Bolognia Year 2003

  25. Results France Year 2004

  26. Results Summary

  27. Missing Data

  28. Thank you for your attention !

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