Response of grapevine cv. Syrah to irrigation frequency and water distribution pattern in a clay soil

Phenology and grape ripening characteristics of cv Tempranillo within the Ribera del Duero designation of origin (Spain): Influence of soil and plot characteristics

“…No significant differences among groups were found in the average pH. It is known that greater water availability to the vine generates higher acid concentration in the grape (Sebastian et al, 2015;Luciano et al, 2013) while water deficits reduce acidity as berries contain less malic acid (van Leeuwen et al, 2004). In the case of this study, the highest acidity values were found in the plots located near the river (distances up to 2500 m and elevation up to 800 m a.s.l.…”

“…Thus, temperature plays and important role on flavonoid development (Huglin and Schneider, 1998), anthocyanin concentrations (Coombe, 1987;Tarara et al, 2008), proanthocyanidin (Cohen et al, 2012Zamora, 2003 and on various aroma compounds (Duchêne and Schneider, 2005;Reynolds and Wardle, 1993). Other climatic variables such solar radiation or water distribution are also important for the optimum development of color and aroma during ripening (Sebastian et al, 2015;Gregan et al, 2012), and also affect berry sizes and overall yield (Ubalde et al, 2010). However, within a specific climate zone, soil is the most important environmental factor controlling within vineyard vine development and fruit or wine quality (Sotés and Gómez-Miguel, 2003).…”

Review of water deficit mediated changes in vine and berry physiology; Consequences for the optimization of irrigation strategies

“…However, this concept of a strict classification of cultivars into iso and an-isohydric has been challenged by several research groups. Same cultivars showed often very contradictory even opposed behavior when exposed to water stress such as Cabernet-Sauvignon (Williams and Baeza, 2007), Tempranillo (Antolin et al, 2006;Sebastian et al, 2015) and Syrah (Lovisolo et al, 2010;Schultz, 2003;Soar et al, 2006). Whether an-or isohydricity is genotypically determined as indicated by the identification of several QTLs related to isohydricy , or whether it is more influenced by abiotic factors in the current, or even more in past seasons (Chaves et al, 2010) and to what extend diversity of scion-rootstock combinations and their interaction with different soils intervene (Lavoie-Lamoureux et al, 2017), is still an ongoing debate .…”

“…High frequency irrigation implies the application of small amounts of water resulting in limited superficial water bulbs. Sebastian et al (2015) report that differences between irrigation frequencies promoted changes in water status that resulted in relevant agronomic differences. In a heavy clay soil, the higher irrigation frequency (every 2 days) led to an efficiency loss Thibaut Scholasch and Markus Rienth under low water availability conditions.…”

Canopy management and water use efficiency in vineyards under Mediterranean semiarid conditions

“…Moreover, the information available refers to the effect of water distribution pattern in grapevines is even scarcer, despite it is known to affect the shape of the wetted soil zone, modifying the root system development and its function [2]. Grape roots appeared to have phenotypically distinct stages of development, but the functional states of these stages were unknown [3].…”