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Vine photosynthesis and ripening physiology

Follow carbon from leaf to berry and separate sources, transport, sinks, and several ripening clocks.

4 min 16 secN06After Level 3 Lessons 1–2

Lesson map

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Each part of this lesson has its own page. Start with preparation, go directly to the background material, or return for the quiz after watching.

The line worth keeping

Harvest sugar supports a potential-alcohol estimate; it cannot by itself prove balanced ripeness, climate, vine health, or quality.