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CRA-ISAGRO Bari : G. Rana, M. Mastrorilli, D. Palumbo, R. Colucci,

La ricerca sugli effetti dell’ozono in colture agrarie in ambiente mediterraneo. CRA-ISAGRO Bari : G. Rana, M. Mastrorilli, D. Palumbo, R. Colucci, M. Bou Jaoudé, R. M. Ferrara, P. Campi 5 tecnici Università di Napoli : M. Fagnano, A. Maggio, S. De Pascale, G. Merola. Università di Napoli

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CRA-ISAGRO Bari : G. Rana, M. Mastrorilli, D. Palumbo, R. Colucci,

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  1. La ricerca sugli effetti dell’ozono in colture agrarie in ambiente mediterraneo • CRA-ISAGRO Bari: • G. Rana, M. Mastrorilli, D. Palumbo, R. Colucci, • M.Bou Jaoudé, R. M. Ferrara, P. Campi • 5 tecnici • Università di Napoli: • M. Fagnano, A. Maggio, S. De Pascale, G. Merola

  2. Università di Napoli 2 stazioni sperimentali : Area rurale: Torre Lama, SA (pianura irrigua costiera) Area peri-urbana: Portici (NA) Stazioni meteorologiche standard + analizzatori di ozono OTC (con/senza filtro) microlisimeteri 2 fitotroni + camere di crescita Laboratori: Agro-fisiologia Chimica CRA- Istituto Sperimentale Agronomico di Bari 2 stazioni sperimentali : Area rurale: Rutigliano (Bari) pianura irrigua Area peri-urbana: Foggia Stazioni meteorologiche standard + analizzatori di ozono OTC (con/senza filtro) Stazioni per eddy covariance (H2O, CO2) Strumentazione monitoraggio acqua nel suolo Laboratori: Agro-fisiologia Chimica Fisica del suolo Gruppo di ricerca “ozono” sud d’Italia

  3. Main factor: ozone effect (es. OTC F vs. OTC NF) Sub-factor: stress idrico o salino (es. 4 livelli di stress idrico o salino) Schema split-plot usato per studiare gli effetti dell’interazione tra ozono e stress idrico o salino (VEDI POSTER Fagnano et al.). S2 S1 S3 S4 Dati: quantità e qualità produzione, scambi gassosi

  4. Schema split-split-plot usato per studiare gli effetti dell’interazione tra ozono, stress salino e trattamenti con un “modulatore” stomatico non tossico (prolina) VEDI POSTER Maggio et al.. Main factor: ozone effect (es. OTC F vs. OTC NF) Sub-factor: CON eSENZASTRESS SALINO +P +P Sub-sub-factor: con (+P) e senza PROLINA Dati: quantità e qualità produzione, scambi gassosi, antiossidanti

  5. Effect of ozone on water status, growth and yield of soybean crop grown under different watering conditions Gianfranco Rana, MaherBou Jaoudé, Marcello Mastrorilli CRA – Istituto Sperimentale Agronomico (Bari)

  6. Objectives 1- To evaluate the ozone concentration levels in rural areas of southern Italy submitted to Mediterranean climate 2- To study the effect of ozone exposure on a sensitive crop at short, medium and long-term, considering crop water conditions 3- To assess and model the relations ozone exposure - plant response

  7. Experimental set up Site: Rutigliano (Bari) under semi - arid Mediterranean climate Crop:soybean in OTC Standard agrometeorological measurements (O3 concentration) Plant water status (PLWP, gs) and soil water content (TDR) Plant growth, production and quality

  8. Open field: cumulated AOT40 over soybean crop cycles (2003-2004-2005)

  9. 2003 – well watered/stressed AA=10000 ppb

  10. 2004 – well watered

  11. 2004 – well watered

  12. 2005 – well watered/stressed

  13. Synthesis and modelling (2003-2004-2005)

  14. Relative gs = +O3/-O3 Relative AET = +O3/-O3 Plant Water Status and AET

  15. Relative LA = +O3/-O3 Relative dry matter = +O3/-O3 Leaf area and dry matter

  16. Recommendations The extension of this work can consider the following: • To evaluate the relationships ozone action - plant functions through CERES (or other) model • To repeat the studies concerning the effect of enriched ozone comparing sensitive and resistant species

  17. New research needed • O3flux effects relationships in Mediterranean environments • Formulation of suitable canopy resistance models for O3 flux • Measure and monitor O3 flux in field conditions by micrometeorological methods in arid and semi-arid environments (including FACE facility) • Set up and assessment of eddy covariance technique for O3 fluxes

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