By Lenn Thompson, Editor-in-Chief During the winter of 2006, Rich Pisacano, veteran grape grower and co-owner of Roanoke Vineyards, had a disagreement with his father Gabby, also a long-time grape grower. The source of the dispute? Employing a more manually intensive, hands-on approach in the vineyard. "At the time, he (Gabby) was not entirely convinced that such differences in the process could have such a profound effect on the finished wine. He suggested taking a portion of the vineyard to do exactly what an extreme protocol asked of him to see what would happen," Rich told me in an email.…