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The publication explores how temperature affects viticulture in North Carolina, focusing on regional temperature conditions as key factors in grape and wine quality. The study includes four models that outline temperature regimes across the state, discusses climate change implications for viticulture, and recommends winegrape cultivars for new and replacement plantings.
Grapevines require 16 essential nutrients for normal growth and development (Table 9.1). Carbon, hydrogen, and oxygen are obtained as the roots take in water and as the leaves absorb gases. The remaining nutrients are obtained primarily from the soil. Macronutrients are those used in relatively large quantities by vines; natural macronutrients are often supplemented with applied fertilizers.The micronutrients, although no less essential, are needed in very small quantities. When one or more of these elements is deficient, vines may exhibit foliar deficiency symptoms, reduced growth or crop yield, and greater susceptiblity to winter injury or death. The availability of essential nutrients is therefore critical for optimum vine performance and profitable grape production.
To grow more consistent crops and improve your cash flow in years with damaging frost events, this chapter will show you how you can: 1) identify an active protection system to protect your vineyard during budbreak and early shoot development, 2) use the basic principles of frost and frost/freeze protection to deal with complex cold protection scenarios, so that you use your active protection system(s) efficiently, and 3) operate the equipment correctly.
