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A training system (double-curtain training) developed in the early 1960s by the US viticulturalist Dr. Nelson Shaulis (1913-2000) at Cornell University (Geneva, New York State). It belongs to the large group of so-called cordon education systems. Originally, it was created specifically for the Concord grape variety to enable mechanical harvesting. The vines are pulled onto a high T-shaped framework (also V-shaped). The vine row spacing is about three metres. The...

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