Which region of Chile has annual rainfall exceeding 1000 millimeters, contributing to more widespread fungal diseases?

The Southern Region of Chile is known for its climate, which is characterized by significantly higher annual rainfall, often exceeding 1000 millimeters. This wet environment creates conditions that are favorable for the development of fungal diseases, which can be particularly challenging for viticulture. The high humidity and moisture levels in the Southern Region, especially in areas such as the BioBío and Malleco valleys, contribute to an increased risk of diseases like powdery mildew and downy mildew.

In contrast, other regions of Chile like Coquimbo, Maipo Valley, and Cachapoal have much drier climates, which are less conducive to fungal disease proliferation. Coquimbo, for example, is primarily known for its arid and semi-arid conditions, while the Maipo Valley and Cachapoal Region benefit from a Mediterranean climate that features distinct wet and dry seasons. Thus, they do not experience rainfall levels comparable to the Southern Region and do not have the same elevated risk of fungal diseases.