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WineEast "Paper or Plantra" The choice is yours! ® Paper Tube or "GROW" the whole vine! Paper Tube vs. Temporary (single-season?) spray cover, shorter height means more vine training trips. Opaque sidewall construction blocks sunlight vines need to optimize healthy, balanced growth. Plantra JumpStart® Grow Tubes Multi-season field life, spray protection, full tube height for one-trip vine training. Twin-walled for light diffusion and translucent to the specific sunlight vines need, JumpStart® Grow Tubes are packed with advanced greenhouse technology to stimulate the vine's own phytochrome to grow the whole vine from roots to shoots. Bigger, healthier vines for earlier, larger, and sustained harvests. Take the Plantra pledge and "Plant Like You Mean It!" Visit Plantra.com today to discover the impact phytochrome with JumpStart® Grow Tubes can have to get your next planting to Survive, Thrive, Succeed! www.plantra.com 800-951-3806 ©2011 Plantra, Inc. #1 Industry Website Winemaking dosage should be just enough to provide the chosen molecular SO2 and to compensate for the oxygen pickup in your specific bot- tling operation. A minimum of two weeks bottle aging is a good policy, because this gives time for the SO2 to bind up any acet- aldehyde generated by bottling. This one- to two-week period after bottling when the wine seems a little dumbed down is known as bottle shock. Inert gas sparging of bottles will reduce the amount of oxygen pickup and reduce the loss of free SO2 is a good idea. You can count on . Also, cold wine more readily dissolves oxygen than warm wine. If the wine will be in the warehouse for a year, a little extra SO2 wine losing an additional 8-10 ppm SO2 during the first year of storage under cork. Screwcaps generally show less loss. Headlines Features Columns Newsbriefs Calendar Archive search (866) 453-9701 • winesandvines.com Laboratory equipment is set up for the aera- tion oxidation method of SO2 analysis. Most wineries in the East use potassium metabisulfite (PMBS) as their source of SO2 . Additions are made by first dissolv- ing PMBS in cool water, then adding it to 70 Wines & Vines JUne 2011 . It is a stable white powder as long as it is kept dry and sealed in a container. PMBS is about 58% sulfur dioxide by weight, so it takes 1.72 grams of PMBS to yield 1 gram of SO2