http://www.cnr.it/ontology/cnr/individuo/prodotto/ID261095

Assessing irrigated crops' adaptability under future climate: the interplay of water management and cultivars' responses (Abstract/Comunicazione in atti di convegno)

Type

Prodotto della ricerca (Classe)
Abstract/Comunicazione in atti di convegno (Classe)

Label

Assessing irrigated crops' adaptability under future climate: the interplay of water management and cultivars' responses (Abstract/Comunicazione in atti di convegno) (literal)

Anno

2013-01-01T00:00:00+01:00 (literal)

Alternative label

Francesca De Lorenzi (1), Antonello Bonfante (1), Angelo Basile (1), Silvia Maria Alfieri (1), Eugenia Monaco (1), Massimo Menenti (2) (2013)
Assessing irrigated crops' adaptability under future climate: the interplay of water management and cultivars' responses
in 1st CIGR Inter - Regional Conference on Land and Water Challenges, Bari (Italy), 10-14 September 2013
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Francesca De Lorenzi (1), Antonello Bonfante (1), Angelo Basile (1), Silvia Maria Alfieri (1), Eugenia Monaco (1), Massimo Menenti (2) (literal)

Pagina inizio

169 (literal)

Pagina fine

170 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni

Lavoro realizzato nell'ambito del progetto Agroscenari finanziato dal MIPAAF con D.M. 8608/7303/2008 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume

Water, environment and agriculture: challenges for sustainable development (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

2 (literal)

Note

Abstract (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

(1) Consiglio Nazionale delle Ricerche (CNR) - Istituto per i Sistemi Agricoli e Forestali del Mediterraneo (ISAFOM) (2) Delft University of Technology, Department of Geoscience and Remote Sensing, Delft, The Netherlands (literal)

Titolo

Assessing irrigated crops' adaptability under future climate: the interplay of water management and cultivars' responses (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn

2-85352-519-8 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#curatoriVolume

N. Lamaddalena, M. Todorovic, L.S. Pereira (literal)

Abstract

The effect of climate evolution on the sustainability of irrigated agricultural systems will be site-specific depending on: (i) resource availability, (ii) crops' water requirements, (iii) soil hydrological behavior and (iv) irrigation management strategies. In an irrigated district of Southern Italy, for two field crops (maize and tomato), we have evaluated various irrigation scheduling options in different climate scenarios, and we have assessed the adaptability of many cultivars. We have first estimated the yield response to water of several maize and tomato cultivars. Next, to identify options for adaptation, we have evaluated the compatibility of such responses with indicators of soil water availability, with different irrigation strategies, for a reference (current) and future climate. This compatibility assessment was done for each soil unit within the study area. The derived spatial and temporal variations of soil water regime and adaptability were studied. Two climate scenarios were considered: reference (1961-90) and future (2021-2050) climate, the former from climatic statistics, and the latter from statistical downscaling of general circulation models (AOGCM). Climatic data consist of daily time series of maximum and minimum temperature, and daily rainfall on a grid with a spatial resolution of 35 km. The work was carried out in the Destra Sele irrigation scheme (22.000 ha). Twenty-five soil units were identified and their hydrological properties were determined (measured or estimated from HYPRES pedo-transfer functions). Upper boundary conditions were derived from the two climate scenarios. Maize and tomato crops (in the rotations typical of the area) were considered. A mechanistic model of water flow in the soil-plant-atmosphere system (SWAP) was used to describe the hydrological conditions in response to climate and irrigation. The model was calibrated and validated in the same area for many different crops. Cropspecific input data and model parameters were estimated on the basis of local experiments and of scientific literature and assumed to be generically representative of the species. Simulations were performed for reference and future climate, and for different irrigation scheduling options. In all soil units, a set of irrigation scheduling volumes was applied: from full to no irrigation, through different levels of deficit irrigation. From simulation runs, indicators of soil water availability were calculated; moreover the marginal increases of transpiration per unit of irrigation volume (?T/I) were computed, in both climate scenarios. Indicators and marginal increases were used to evaluate crops' adaptability to future climate. To this purpose, for several maize hybrids and tomato cultivars, yield response functions to soil water availability were determined (data from scientific literature and experiments). Cultivars' response functions were evaluated, in all soil units, against the indicators' values, for irrigation levels with different ?T/I. Less water intensive cultivars and irrigation volumes that optimize transpiration (and yield) could thus be identified in both climate scenarios, and irrigation management scenarios were determined taking into account soils' hydrological properties, crop biodiversity, and efficient use of water resource. The results have shown the spatial patterns of soil water regime, that were strongly influenced by soils' characteristics. Moreover the case study has shown how, in the future climate scenario, with limited water resources, the intra-specific biodiversity will allow to maintain current crop production system. (literal)

Editore