High clay content in vineyard soils significantly impacts grape vine water stress and, consequently, wine characteristics. Clay soils have small particle sizes and a high surface area, leading to strong water retention. While seemingly beneficial, this high water-holding capacity can create both water stress and drainage challenges. Initially, clay soils can hold a large reservoir of water, potentially delaying the onset of water stress early in the growing season. However, much of this water is held tightly by the clay particles, reducing its availabi....
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