FNH 330 Lecture Notes - Lecture 1: Cabernet Sauvignon, Pinot Noir, Central Valley (California)
4 Apr 2016
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Phylloxera: feeds on roots and leaves, taking away nutrients and water. Botryis: grey rot caused by high humidity, important in making sweet desert wine because holds vine for another week. But in fermentaion, kills yeast to stop fermentaion. Need irrigaion in mid-summer and less before harvest, have deep ploughing drainage or pipes/iles or add manure. Co2 + h2o + chloroplast = sugar + photosynthesis = o2. Need summer (de-suckering to remove bad fruit)and winter pruning and shoot posiioning and training system. Too much vine = excess shading, poor quality wine, increased winter injury, increased humidity and disease, pesicide will not work. Light compensaion point: when rate of photosynthesis match respiraion: above: export of sugar to fruit, below: deprive fruit from sugar. Ruakura twin two-tier: spread out in 4, beter than blc in density, wine sensory, rot, and yield. Viticulture considerations: sustainable, low maintenance, economical, depends on terrain and labour (machine vs. hand, wine quality requirement and achievability.
