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w i n e G R O WIN G Shaded Morning side 3.4 2.6 SD 0.3 0.1 IBMP in wine (ng/L) 4 3 a b 2 1 0 Treatments Shaded Figure 6: The concentration of IBMP (ng/L) in Sauvignon Blanc grape berries from 53 days after flowering (Jan. 12, 2012) to harvest, 113 days after flowering (March 13, 2012) for the shaded and the morning side exposed treatments. Merlot The treatments did not affect the berry fresh mass and classical ripening parameters irrespective of the harvest dates at fresh and mature fruit stages (Table II). The increase in Brix between fresh fruit and mature fruit stages can be attributed to an increase in sugar per berry. The IBMP concentration in Merlot grape berries decreased during maturation. A higher concentration of IBMP in grape berries was observed in the shaded treatment (no leaves or lateral shoots removed), compared to the both sides exposed treatment, where leaves and laterals were removed at the berry pea size phenological stage (Figure 9). At the last three sampling dates for both treatments, although no significant decrease in the IBMP concentration was observed, a lower IBMP concentration was noted for the both sides exposed treatment compared to the shaded treatment. IBMP concentrations in the wines were higher for the shaded treatment than the both sides exposed treatment, that was also observed in the grape berries (Figure 9). No noticeable difference was seen in the IBMP concentration between wines for the two harvest stages of fresh and mature fruit (Figure 10). The IBMP concentration in grapes remained relatively stable after reaching a certain concentration.16 The both sides exposed treatment resulted in wines with an IBMP concentration of less than the detection threshold of 15 ng/L in red Figure 7: The concentration of IBMP (ng/L) in Sauvignon Blanc wines from shaded and morning side exposed treatments. wines, whereas the IBMP concentration in the wines of the shaded treatment was 18.1 and 18.3 ng/L respectively for grapes harvested at the fresh and mature fruit stages (Figure 10).13 Conclusions Increased light in the fruit zone has an effect on berry composition, generally Outstanding Tanks for Outstanding Wines Wine Tanks, Fermentors, and Winery Equipment Affordable Custom Tanks and Fermentors Semi-automatic Fillers Membrane Presses Rocket M-7 Semi-automatic Series Filters Corkers and Cappers "Excellent quality at reasonable prices with exceptional customer service built around an understanding of vintners' needs." ~ Jim Schultz, Windy Oaks Winery Mio Vigneto Products, Inc. esters. By removing leaves and lateral shoots, a more complex (fruitier) style of Sauvignon Blanc was produced in comparison to the one-dimensional (greener) wine style produced from the shaded treatment. Morning side exposed Visit us at www.miovigneto.com Email dwightb@miovigneto.com Call Dwight Busalacchi at (415) 531-6450 pr actica l win ery & vin eya rd JANUARY 20 14 31