I would encourage you to look into the work of Graeme Sait. He is an Australian agronomist who own Nutri-Tech Solutions and presents around the world through his Nutrition Farming seminars. He has an absurd mind that stores an immense amount of information, so you will find his material to be very, very dense. He has an excellent podcast called Nutrition Matters, where he talks about soil health, plant health, and human health. Graeme has an excellent portion of his in-person courses where he talks about sap pH. If sap pH is acidic, less than 7, then the plant is likely short in an alkalizing mineral – those being Calcium, Magnesium, or Potassium. When you have an acidic pH, you will run into fungal diseases. If your pH is alkaline, greater than 7, then your plant is likely short in Phosphate, Sulfate, or Nitrate which are all acidifying. An alkaline pH can result in insect pressure. There is also the Redox research by Olivier Husson to research. May I ask what the growing conditions are for your vineyard?