PORT - Growing environment and grape growing - Soils
3 important questions on PORT - Growing environment and grape growing - Soils
What is the soil in the Douro region
- Stony and shallow
- Free-draining and poor in nutrients
- > limits viogour
- Bedrock = schist
What is the importance of the Schist in the Douro region
- It is the underlaying bedrock
- crumbles into layers relatively easy
- here, due to ancient tectonic movements, split in vertical layers
- vine roots are able to penetrate deep to find water
- irrigation only permitted in exceptional circustances
- the Schist is so important > boundary of the demarcated Port region mostly follows the outline of the schist
- (very difficult to survive in the surrounding impenetrable granite bedrock)
How is the boundary of the demarcated Port region related to the soil
- It mostly follows the outline from the schist bedrock
- the schist is split in vertical layers which makes it possible for the roots of the vine to penetrate deep for the sparse water from rainfall (900 mm in Baixo, 700 mm in Cima, 450 in Superior)
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