Adding organic matter is the best way to improve nearly all kinds of soils.
This article describes how to determine vineyard nutrient needs through tissue and soil sampling.
Information on vineyard water management, focusing on when to initiate irrigation.
All grapes require heavy pruning to produce fruit, but after the first three growing seasons, different types of grapes need different pruning. Wine grapes and muscadines usually need spur pruning, and American grapes, such as Concord and Thompson Seedless require cane pruning.