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Advisor(s)
Abstract(s)
Context and purpose of the study - Climate change imposes increasing restrictions and risks to
Mediterranean viticulture. Extreme heat and drought stress events are becoming more frequent which puts
in risk sustainability of Mediterranean viticulture. Moreover row crops e.g. grapevine for wine, are
increasingly prone to the impact of more intense/longer exposure time to heat stress. The amplified effects
of soil surface energy reflectance and conductance on soil-atmosphere heat fluxes can be harmful for leaf
and berry physiology. Leaf/canopy temperature is a biophysical variable with both physiological and
agronomic meaning. Improved comprehension of spatial and temporal dynamics of soil and leaf/canopy
temperature (thermal microclimate) in irrigated vineyards can support improved crop and soil monitoring
and management under more extreme and erratic climate conditions. In this work we propose a conceptual
approach to integrate information on major soil-vine-atmosphere interactions under deficit irrigation.
Ultimately a conceptual model based on temperature relations is proposed to support assessment of the
impact of air and soil temperatures on canopy and berry temperatures, leaf senescence and gas exchange.
This model may support Decision Support Systems (DSS) for canopy and soil management and irrigation
scheduling in Mediterranean vineyards. In addition a set of temperatures (e.g. canopy, soil) are proposed to
feed the conceptual models to support the DSS
Description
Keywords
Mediterranean viticulture temperature DSS water and heat stress soil and canopy temperature irrigation
Pedagogical Context
Citation
Costa JM, Egipto R, Lopes CM, Chaves M (2019). Dynamics of soil and canopy temperature: a conceptual approach for Alentejo vineyards. In Proceedings 21st GiESCO International Meeting: ‘A Multidisciplinary Vision towards Sustainable Viticulture’, June 23 - 28, 2019 Thessaloniki, Greece, 28-29