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Re:Show HN: Growing Wine Grapes in My Parents' Basement by jmheflin on Friday October 02, 2020 @02:22PM (#24665449)
Another great question. Thanks for taking the time to read my post.

Larry Williams, a professor at UC Davis did a lot of work on this. He found that canes are not a significant contributor to vine nutrient status. Only 2% of the nitrogen that falls to the ground in canes ends up back in the vine the next year.

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