Grape yield and quality responses to simulated year 2100 expected climatic conditions under different soil textures

BACKGROUND The influence of global warming on grape quality is a great concern among grapegrowers and enologists. The effects of simulated year 2100 expected CO2, temperature and relative humidity (RH) conditions (FCC; 700 µmol CO2 mol−1 air, 28/18 °C day/night and 33/53% RH, day/night) versus the c...

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Published in:Journal of the science of food and agriculture 2017-06, Vol.97 (8), p.2633-2640
Main Authors: Leibar, Urtzi, Pascual, Inmaculada, Morales, Fermín, Aizpurua, Ana, Unamunzaga, Olatz
Format: Article
Language:English
Subjects:
Air temperature
Anthocyanins - analysis
Berries
Carbon dioxide
Clay soils
Climate Change
Climatic conditions
Composition effects
Concentration (composition)
Fruit - chemistry
Fruit - growth & development
Fruit set
Global warming
grape colour
Grapes
Malates - analysis
Malic acid
Night
pH effects
Quality Control
Relative humidity
Soil - chemistry
soil clay content
Soil conditions
Soil water
Tartaric acid
Temperature
Temperature effects
Vitis - chemistry
Vitis - growth & development
water deficit
Wine - analysis
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Summary:BACKGROUND The influence of global warming on grape quality is a great concern among grapegrowers and enologists. The effects of simulated year 2100 expected CO2, temperature and relative humidity (RH) conditions (FCC; 700 µmol CO2 mol−1 air, 28/18 °C day/night and 33/53% RH, day/night) versus the current situation (Curr; 390 µmol CO2 mol−1 air, 24/14 °C and 45/65% RH); well‐irrigated versus expected future water deficit and three soils with different clay contents (41, 19 and 8%) on yield and berry quality of grapevine cv. Tempranillo were evaluated. RESULTS FCC shortened the time between fruit set and veraison and between fruit set and maturity by up to 7 and 10 days, respectively. This faster maturity led to higher must pH and tonality and reduced malic and tartaric acid concentrations, total anthocyanin concentration and colour intensity. Water deficit delayed ripeness for up to 9 days and reduced vegetative growth and malic acid concentration of grapes. However, this malic acid reduction did not occur with the clayey soils. These soils induced the lowest root fresh weight and berries with lower total anthocyanin concentration. CONCLUSION Among the adaptation techniques to cope with the described effects on fruit composition, soil selection should be considered with attention in addition to irrigation practices. © 2016 Society of Chemical Industry
ISSN:0022-5142
1097-0010
DOI:10.1002/jsfa.8086