Oenologists, alternately called enologists, supervise and manage the stages of wine production. They coordinate with viticulturists to grow and harvest grapes, direct the fermentation process, supervise the aging process and oversee bottling. 

 Viticulture Basics: Viticultural practices in the vineyards have direct influence on the type and style of wine that can be produced from any area.Grape vines are basically weeds.  They’ll grow anywhere with a bit of sunlight and little water, let alone any pruning. 

Terroir is the set of all environmental factors that affect a crop's phenotype, unique environment contexts and farming practices, when the crop is grown in a specific habitat. Collectively, these contextual characteristics are said to have a character; terroir also refers to this character.