- 3 - grape production to their own winery, and the remaining 25 percent is sold to unrelated wineries. Vines of a particular variety are grown in a “block”, which is not a standard size area of land. Depending upon the size of the block, petitioners typically used 10 or more individuals to install vines on a block. After the soil has been ripped or broken and nutrients added, the trellis rows are laid out with a mark to identify the location of each vine. A 2-foot trench is dug and a PVC pipe is installed, along with risers at each trellis row for the irrigation system. End and in-line posts are then pounded 2 to 3 feet into the ground, and anchors are screwed into the ground to secure the end posts with guy wires. Various wires are then attached and strung between the posts to train and irrigate the vines. Next, a drip hose is attached to the riser and fastened to the drip wire with clips. Finally emitters are placed on the drip hose at the eventual site of each vine. As of the time of trial, petitioners were cultivating 12 different grape varietals, including Carignane, Chardonnay, Zinfandel, Petite Syrah, Merlot, Sangiovese, Montepulciano, Petite Verdot, Malbec, Syrah, Cab Franc, and Cabernet. Petitioners used two grape-growing methods--trellising and head pruning. The trellising method involves the use of trellises and a drip irrigation system, whereas the head pruning method does not require a trellis, but drip irrigation may be used.Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NextLast modified: November 10, 2007