Viti 2.0 Flashcards
Slate in context of viticulture
Metamophic origin - fine-grained clay compacted via high temperatures over time.
* Poor in organic matter - does not retain water
* stores heat: cools down slowly
Causes of chlorosis
- too much calcium (which inhibits iron uptake)
- not enough iron (indispensable for photosynthesis)
- not enough magnesium (only mineral constituent of chlorophyll)
Nitrogen’s role in vine growth
Critical for production of green matter
Phosphate’s role in vine growth
Encourages root development, indirectly encourages earlier ripening
Potassium’s role in vine growth
- Improves metabolism
- enriches sap
- impacts next year’s crop
Iron’s role in vine growth
Critical for photosynthesis
Magnesium’s role in vine growth
Only mineral constituent of chlorophyll
* helps with dry matter accumulation
* prevents/control stem necrosis
* increases alcohol and sugar content of berries
Acid soils
Sandy loams or sands
Volcanic soils
Any igneous or silicate-rich soil
Low in calcium and magnesium; reduced phosphorous availability
Alberese
Compact clay and limestone found in Chianti
* Albero = synonymous with Albariza
Albian
A type of schist found in Maury
Examples of Alkaline soil
Chalk and any calcareous soil
What is an alluvial soil?
Material that has been transported by a river and deposited
ex: silt, sand, gravel
Arène
A coarse granitic sand found in Beaujolais
Argovian Marl
A chalky clay found in Cote de Beaune
Aubuis
Found in Touraine - a great soil for Chenin in Vouvray and Montlouis
* stony mix of permeable, fertile, calcareous clays