- 4 - Petitioners use the head pruning method for their Carignane, Zinfandel, and Petite Syrah grapevines and trellising for the others. During 1999 and 2000, petitioners’ son, Victor Trentadue (Victor), managed petitioners’ vineyard operations, including the growing of grapes, and he also managed Trentadue Winery, petitioners’ separate business for making wine. Victor also owned his own business called Four Seasons Vineyard Management Co., which installed, maintained, and removed grapevines, trellises and irrigation systems. Petitioners attached to their 1999 and 2000 Joint Federal Income Tax Returns, a Schedule F, Profit or Loss From Farming, on which they claimed depreciation deductions for, among other items, the trellis components, trellis systems, irrigation systems, and the well. With respect to the above-listed property, depreciation deductions were calculated using a 10-year class life, which includes 7- to 10-year recovery periods. In the notice of deficiency, respondent determined that the recovery period for each of these properties was 15 years, which would place them in the 20-year class life, which includes 15- to 20-years class lives. Trellising Trellising is a method of training vines used in the production of wine grapes. The primary components of a trellisPage: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NextLast modified: November 10, 2007