May 2015 Issue of Wines & Vines
Predicting harvest date using berry sugar accumulation
Sugar loading can be defined as the accumulation of the quantity of sugar per berry, expressed as milligrams (mg) per berry, from véraison onward. Véraison corresponds with the onset of fruit maturation.
In the grapevine, fruit maturation starts with an abrupt softening of the berry (within 24 hours). This softening goes hand in hand with sugars being actively intro…
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