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The role of soil temperature in mediterranean vineyards in a climate change context
Publication . Costa, J. Miguel; Egipto, Ricardo; Aguiar, Francisca C.; Marques, Paulo; Nogales, Amaia; Madeira, Manuel
The wine sector faces important challenges related to sustainability issues and
the impact of climate change. More frequent extreme climate conditions (high
temperatures coupled with severe drought periods) have become a matter of
concern for the wine sector of typically dry and warm regions, such as the
Mediterranean European countries. Soil is a natural resource crucial to sustaining
the equilibrium of ecosystems, economic growth and people’s prosperity
worldwide. In viticulture, soils have a great influence on crop performance
(growth, yield and berry composition) and wine quality, as the soil is a central
component of the terroir. Soil temperature (ST) affects multiple physical,
chemical and biological processes occurring in the soil as well as in plants
growing on it. Moreover, the impact of ST is stronger in row crops such as
grapevine, since it favors soil exposition to radiation and favors
evapotranspiration. The role of ST on crop performance remains poorly
described, especially under more extreme climatic conditions. Therefore, a
better understanding of the impact of ST in vineyards (vine plants, weeds,
microbiota) can help to better manage and predict vineyards’ performance,
plant-soil relations and soil microbiome under more extreme climate conditions.
In addition, soil and plant thermal data can be integrated into Decision Support
Systems (DSS) to support vineyard management. In this paper, the role of ST in
Mediterranean vineyards is reviewed namely in terms of its effect on vines’
ecophysiological and agronomical performance and its relation with soil
properties and soil management strategies. The potential use of imaging
approaches, e.g. thermography, is discussed as an alternative or
complementary tool to assess ST and vertical canopy temperature profiles/
gradients in vineyards. Soil management strategies to mitigate the negative
impact of climate change, optimize ST variation and crop thermal
microclimate (leaf and berry) are proposed and discussed, with emphasis on
Mediterranean systems
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Fundação para a Ciência e a Tecnologia
Programa de financiamento
DL 57/2016
Número da atribuição
DL 57/2016/CP1382/CT0028