This article describes how to determine vineyard nutrient needs through grapevine tissue and soil sampling. It also provides tissue testing guidelines.
Q: I live in a forested area of Deschutes County. I think that deadfall (cut trunks laying on the forest floor) left to decompose improves the health of the forest, but I am wondering if it also increases fire risk.
Learn more about viticulture and precision agriculture research to understand plant nutrition monitoring and management from table grape trials conducted in California's San Joaquin Valley.