Vineyard site selection is dictated by several determining factors including; environmental stresses and biological pests, slope of growing area, climatic variables, soil and water quality and . Grapes grown in Ventura County exposed to environmental stresses and biological pests that can reduce crop quality and yields and injure or kill grapevines. Damaging winter temperatures, spring and fall frosts, extremes of rainfall, and higher than optimal summer temperatures occur with regularity in some regions. …
