This article describes how to determine vineyard nutrient needs through grapevine tissue and soil sampling. It also provides tissue testing guidelines.
Q: My so-called lawn needs help — it consists of clumps of grass with bare spots between. My small yard is completely fenced with a large apple tree shading much of it, so the grass gets at most 3 to 4 hours of sun ...
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.