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Agronomic adaptation strategies under climate change for winter durum wheat and tomato in southern Italy: irrigation and nitrogen fertilization
- Ventrella, Domenico, Charfeddine, Monia, Moriondo, Marco, Rinaldi, Michele, Bindi, Marco
- Regional environmental change 2012 v.12 no.3 pp. 407-419
- Solanum lycopersicum var. lycopersicum, Triticum aestivum, adaptation, air temperature, carbon dioxide, climate, climate change, crop models, crops, data collection, decision support systems, dry matter accumulation, greenhouse gases, irrigation, nitrogen fertilizers, tomatoes, water resources, weather, winter wheat, Italy, Mediterranean region
- Agricultural crops are affected by climate change due to the relationship between crop development, growth, yield, CO2 atmospheric concentration and climate conditions. In particular, the further reduction in existing limited water resources combined with an increase in temperature may result in higher impacts on agricultural crops in the Mediterranean area than in other regions. In this study, the cropping system models CERES-Wheat and CROPGRO-Tomato of the Decision Support System for Agrotechnology Transfer (DSSAT) were used to analyse the response of winter durum wheat (Triticum aestivum L.) and tomato (Lycopersicon esculentum Mill.) crops to climate change, irrigation and nitrogen fertilizer managements in one of most productive areas of Italy (i.e. Capitanata, Puglia). For this analysis, three climatic datasets were used: (1) a single dataset (50Â kmÂ ÃÂ 50Â km) provided by the JRC European centre for the period 1975â2005; two datasets from HadCM3 for the IPCC A2 GHG scenario for time slices with +2Â°C (centred over 2030â2060) and +5Â°C (centred over 2070â2099), respectively. All three datasets were used to generate synthetic climate series using a weather simulator (model LARS-WG). Adaptation strategies, such as irrigation and N fertilizer managements, have been investigated to either avoid or at least reduce the negative impacts induced by climate change impacts for both crops. Warmer temperatures were primarily shown to accelerate wheat and tomato phenology, thereby resulting in decreased total dry matter accumulation for both tomato and wheat under the +5Â°C future climate scenario. Under the +2Â°C scenario, dry matter accumulation and resulting yield were also reduced for tomato, whereas no negative yield effects were observed for winter durum wheat. In general, limiting the global mean temperature change of 2Â°C, the application of adaptation strategies (irrigation and nitrogen fertilization) showed a positive effect in minimizing the negative impacts of climate change on productivity of tomato cultivated in southern Italy.