Veŕaison to Harvest Statewide Vineyard Crop Development Update #3 September 22, 2017 Edited by Tim Martinson and Chris Gerling Around New York... Statewide (Tim Martinson) The heat came back this week, but our fruit samples were collected last Monday before the heat really kicked in. So the numbers progressed at about the same rate as last week, with average gains of 1.2 Brix (Range 0 to 3.6), and titratable acidity (TA) dropping by an average of 2.8 g/l (range 1-6 g/l). Lowest rate of change was in varieties near to harvest (Gruner veltliner, Sauvignon blanc, St Croix, Chardonnay). Notably (see figure), soluble solids are lower (by an average of 1.5 Brix across all varieties) and acids higher (average of 3.9 g/l) than they were at this time in 2016. So far, this is a lower brix, higher acid harvest season. There are some regional differences, notably in Cabernet franc maturity (see table p.6-10). The Finger Lakes stands out from the Hudson Valley and Long Island in having higher TAs (10-13 g/l vs 7-9 g/l in HV and LI) and much lower YAN (all except one below 100, range 12-93 ppm). Compare with the HV/LI sites with 168-362 ppm of YAN. Soluble solids are similar, ranging from 15-18 Brix across the state. One other YAN standout is three Riesling samples (labeled E. Seneca cl90, cl239, and cl198) all in the same vineyard. Two have over 200 ppm of YAN but one (Clone 90) shows 45 ppm. This underscores the fact that YAN levels are unpredictable, so measuring them to plan for yeast nutrient needs is important. Wet year, big vines, gets us thinking about reds and methoxypyrazines or at least green flavors. See Chris Gerling s article about this on p. 4 and 5. Downy Mildew. Active foliar downy mildew lesions observed this past Monday at a Cornell teaching vineyard. Drier weather may slow it down, but warm, humid evenings could still provide conditions for explosive spread. Long Island (Alice Wise) Photo by Tim Martinson Hurricane Jose meandered slowly to the south of Long Island most of the week. Forecasts for the East End of Long Island were worrisome: 3-5 of rain and sustained 20-30 mph winds with higher gusts. Fortunately, the storm lost strength and provided <1 of rainfall and much diminished winds. Still, the humid conditions mean that downy mildew and cluster rot are still concerns in some blocks. Botrytis and sour rot are most common where birds and yellow jackets (and assorted other bees/wasps) are damaging fruit. In the industry, harvest has begun with blocks of Pinot Noir, Pinot Gris and even a few Chardonnay loads arriving at the crush pad with moderate Brix and acids. In the Cornell research vineyard in Riverhead, the crop is looking very good with a few minor exceptions. Three year old Saperavi vines were harvested early due to a sparse canopy and scraggly clusters. These vines are exhibiting prominent virus-like symptoms though testing in 2016 was negative. Saperavi is a cold hardy, Georgian (eastern Europe) vinifera variety that is planted in the Finger Lakes. When healthy, the vines have large, loose clusters with redfleshed berries. It is used as in varietal wines and for blending. We also picked Petite Pearl, a hybrid cross of cold hardy Minnesota varieties. We planted PP as part of an effort to Page 1
evaluate the performance of (reportedly) disease tolerant varieties in a maritime climate. Powdery mildew was an issue last season. Trained to the high wire, the exposed fruit was repeatedly attacked by crows, resulting in yield losses and quite a bit of Botrytis/sour rot. Berries were small, clusters were small and compact with a very short peduncle (cluster stem). Between the heavy canopy, yellow jackets and ultra-short peduncles, hand harvest was slow. Despite some challenges this harvest season, we look forward to good ripening conditions as warm sunny weather is predicted for the next 5-6 days.. Finger Lakes (Hans Walter-Peterson). Warm and sunny weather has dominated in the Finger Lakes over the past week, with only a brief visit from the remnants of Hurricane Irma last Thursday dropping rain on some parts of the region (with a few locally heavy downpours), but almost completely missing others. In every month this season, we have had higher than average rainfall and near normal temperatures, so the recent stretch of sunny and dry conditions has been a welcome change of pace. Heavy morning dews, which can favor the development of downy mildew infections, have been commonplace during this time as well, so while there s been very little rain, disease development (primarily downy mildew, botrytis, and sour rot) is still a concern. The pace of harvest has been picking up over the last several days. We are seeing some Pinot noir and Chardonnay being harvested this week for sparkling wine production, but most vinifera for still wines are still likely to hang for at least another week or more before starting to come in. Constellation Brands has been bringing in early Catawba this week, and at this point is planning to start with Concords next Monday. Cayuga White is starting to get picked this week as well. In a number of cases, including our own Teaching Vineyard, yield of Cayuga White is down this year, due at least in part to poor maturation of canes last fall as a result of last year s drought.. Lake Erie (Tim Weigle) The recent sunshine and warm temperatures are helping the Lake Erie region finish off summer on a high note. Concord harvest is in full swing and while we are seeing Brix values varying drastically from vineyard to vineyard, it appears to be the best of both worlds for area processors. Constellation Brands is able to continue to take high acid Concord and juice processors like Welch s (National Grape Cooperative) are able to get their plants started with grapes from some of the sweeter blocks. Average Brix values being reported range from high 12s to low 18 Brix and appear to be heavily dependent on crop size. Mother Nature is once again being friendly to growers looking to maximize crop size as the forecast includes daily highs in the 80 s and abundant sunshine through next Wednesday, September 27. One concern in the ripening process is the amount of black leaf, due to potassium deficiency, that we are starting to see in a number of Concord vineyards. Wine grape growers are also enjoying the abundant sunshine as it is helping to limit the amount of rot, from all components of the rot complex, from being established. On the other side of the coin, warmer temperatures have made harvest scheduling of early and mid-season wine grapes more critical as some varieties can go from ripe to over ripe in a very short time frame. Hudson Valley and Champlain (Jim Meyers) At the vineyard on the hill, there were three blocks of Seyval. Goldilocks was ready to make some wine. She sampled the fruit from the first block. "This Brix is too low!" she exclaimed. So, she sampled the fruit from the second block. "This acid is too high", she said. So, she sampled the last block of fruit. "Ahhh, this Seyval is just right". -- (my apologies to) Robert Southey In last week's issue of Veraison to Harvest, I made a passing reference to the importance of sampling preharvest fruit in a manner that accurately reflects the block from which it is sampled. Let's look a little closer at that topic this week with the help of an aerial drone. One of the Hudson Valley vineyards sampled for Veraison to Harvest is planted in three blocks - mostly Seyval and each approximately 3 acres in area. Figure 1 (left panel) illustrates the vineyard and its three blocks as seen in Google Earth. During the first week of fruit sampling on September 5th, an arbitrary location was chosen for each of the blocks. The Brix/TA numbers for blocks A, B, and C were 18.6/11.5. 16.8/10.8, and 18.3/11.5 respectively. That same day, a specialized aerial drone was flown over the vineyard to produce a Normalized Difference Vegetation Index (NDVI) map (Figure 1, middle). NDVI is a method of analyzing the reflectance of both visible light and near infrared light to measure plant health. The red colored areas on the map have less 'vigor' than the green areas, with yellow being in the middle. 'Vigor' in this context largely refers to leaf area, although NDVI imagery is able to distinguish healthy leaves from stressed leaves even when leaf areas are equal, so that variable (and others to be discussed in Page 2
Figure 1. Seyval blanc vineyard in the Hudson Valley. The vineyard (left) is divided into three blocks. A vineyard drone was used to provide the raw NDVI image (center). Further processing simplified the 'vigor map' into three categories: green (high), yellow (moderate) and red (low). Photos by Jim Meyers, overlain on Google Earth base photo the future) could also be a factor in this map. Figure 1 (right panel) represents a three-zone NDVI map in which the raw NDVI map was processed to define the vineyard with three levels of vigor -- low (red), medium(yellow) and high (green). During the second week of Veraison to Harvest sampling, the blocks were sampled in the areas indicated by the black circles in the photo. These locations were deliberately chosen to represent each of the three vigor zones. The Brix/ TA numbers for blocks A, B, and C, were 19.2/9.4, 17.6/10.5, and 17.4/10.7 respectively. Note the incongruity between the values in week one and week two, particularly the Brix in block C which appears to have decreased by almost one degree over the course of a week. What happened? On September 5th, block C was sampled at the south end of the block which, as indicated by the NDVI map, is a low vigor zone and Block A was sampled near the location shown on the map for the September 11th sample. This is a possible explanation for why blocks A and C were similar on September 5th, but not on September 11th. Block C was harvested a few days after the September 11th sample and came in at 17.5/9.5 which is reflective of the overall vigor of the block as measured by NDVI and as sampled on the 11th. Note that some of the red zones in block C are Pinot Noir, so the Seyval in the block was generally higher vigor than blocks A and B. The take away here is that mapping the variability in a vineyard can be helpful in making decisions and in interpreting data. On a final note, if anyone is interested in exploring the use of NDVI maps for use in differential harvesting next year, please contact me or Justine Vanden Heuvel. Justine and I are working on a research project funded by the New York Farm Viability Institute to explore the benefits of differential harvesting 2017 Lake Erie Concord Update Terry Bates September 21, 2017. Warm and dry conditions in the Lake Erie region have caused the fresh berry weight curve to flatten over the past week. Juice soluble solids continued to increase at a rate consistent with four weeks after veraison. This block at CLEREL was harvested this week and the total semi-load went in at 16.4 Brix. In general, juice soluble solids across the belt are lower than in this phenology block and we are observing a high incidence of potassium deficiency (black leaf) symptoms in commercial vineyards. Page 3
MP Promises: The 2017 Growing Season from a Methoxypyrazine Perspective Chris Gerling We were at the lake this past weekend, and the refrain from everyone we talked to went along the lines of, summer is finally here in mid-september. In the Finger Lakes in 2017, there was warm weather and there was dry weather but there was not very much warm, dry weather. The data shows less heat and more rain than average through the summer- even in August, when it felt relatively dry to my lawn and me. We had apparently adapted to the early summer conditions and now anything short of ark-building weather felt dry. Regardless, as the calendar shows the first official day of fall, our thoughts turn to what the grapes will look and smell like when they are off the vine. When the weather is cool and wet, especially in the early season, one red (green) flag that goes up is the methoxypyrazine (MP) flag. First, a quick review. 3-Isobutyl-2-methoxypyrazines (IBMPs) are the key impact odorant of the green bell pepper, but can also be present in grapes, especially Bordeaux cultivars like Cabernet Sauvignon, Sauvignon Blanc, Cabernet Franc and Merlot. IBMPs are detectable by people at the single-digit parts-per-trillion level, so a bathtub full of them could make Seneca Lake smell like green pepper. Don t get any ideas. 3-isopropyl-2-methoxypyrazines (IPMPs) are also a compound of potential concern for wines, as they are the key aroma compound introduced by multicolored Asian or 7-spotted lady beetles. While how IPMPs get into juice (*&@%! bugs) is fairly straightforward, IBMP accumulation and degradation is a little more nuanced. Key factors affecting IBMP formation: Sunlight exposure. Clusters exposed to sunlight have lower IBMP concentrations than those that are shaded. The key factor here is that this effect is only relevant in the early season, before veraison. Late season exposure has little or no effect on MPs. Vegetative vigor. Increased vegetative vigor (growth) is correlated with higher levels of MPs. While it s easy to assume that the vigor results in shading and that we re still really talking about sunlight, Alan Lakso worked to de-couple these variables. It turns out more vigorous vines produce more MPs, independent of light exposure. Water. Less water is correlated with lower levels of Ample moisture fuels extended vine growth. At this Riesling and Cabernet Franc block at the experiment station's Loomis farm, shoots were tucked (but not hedged) in late July. Many of the yellowish shoots extending out and above trellis are lateral shoots with 10-12 leaves, some still actively growing as of September 12. Rapid and continued shoot growth ('shoot vigor') promotes relatively higher levels of methoxypyrozines. Photo by Tim Martinson IBMPs. Water and vegetative growth are closely connected, of course, so it s probably not surprising to find a relation there, but recent work has also shown that water is important in its own right. Crop load. Very high and very low crop loads are correlated with higher MP concentrations. Keep in mind we re talking about crop load (ratio of yield to pruning weight) as opposed to yield alone, which does not correlate to MP levels in any way. So large vines with very small crops are going to have more MPs than small vines with small crops or large vines with large crops. Temperature. Higher temperatures are associated with lower MP concentrations, and vice versa. Circling back to water, it seems like warmer, drier conditions will lead to lower MP accumulation and cooler, wetter conditions will favor high MP concentrations. Accumulation vs. Degradation. IBMP levels reach their peak a week or two before veraison, and then decline as the grapes mature. This process does not precisely match malic acid degradation (mechanisms seem unrelated), but they track similarly. While MP accumulation can be affected by a number of variables, degradation seems to occur at a constant rate, regardless of treatment (e.g., sunlight exposure above). What you have before veraison says a lot about what you ll have at harvest (see Figure 1). Given enough hang time, vines that have accumulated higher concentrations of IBMPs may also drop below sensory threshold, enough hang time being a relative and sensitive phrase around certain parts of New York, of course. The task becomes to limit MP accu- Page 4
Figure 1. IBMP concentration at 2 weeks preveraison versus IBMP concentration at maturity for 13 sites neear Seneca Lake. ( Figure from Ryona et al. 2008 mulation wherever possible, armed with the primary tools of crop load balance and early leaf removal. Wine quality- The IBMPs in the berry are fairly directly transferred into the juice, and what s in the juice will go directly into the wine. The MP aromas will then engage in a smell-off with other wine volatiles in a battle for supremacy. If your MP accumulation was low enough, or your harvest was late enough, levels can drop below sensory threshold or be sufficiently masked by the other aroma compounds. If time runs out, chances of perceptible pepper pungency are higher. Figure 2 shows the effect of cluster shading on MPs, and I ve added a relative sensory threshold line in red and the green lines that show potential effect of earlier and later harvest dates. There was a time in the nottoo-distant past when any hint of green, vegetative character was seen as a defect in wines, and the goal was all fruit all the time. While no one (I should never say no one in the current craft beverage space) aspires to a red wine that could be mistaken for green pepper juice colored red, recent style shifts have reminded consumers and producers that a hint of green is not always so bad and in some cases probably appropriate. The New Zealand Sauvignon Blanc style is based partially on thiols and partially on IBMPS. Finally, it s important to remember that IBMPs and methoxypyrazines in general are only a part of what constitutes green or vegetative character in wine. So what of 2017? Conditions in June and early July along with the associated vegetative growth many vineyards experienced seem fairly ideal for IBMP accumulation, but there is some good news that doesn t relate to car insurance savings. One reason for hope is that during the key accumulation time of mid-july to early August, conditions were starting to warm up and dry out (sort of). Further, Figure 2. IBMP accumulation in shaded (solid line) vs. exposed (dashed) grape clusters. Red line indicates a rough approximation of sensory threshold, and green lines indicate two theoretical harvest dates. The earlier harvest would mean the shaded clusters would have IBMP concentrations above the sensory threshold. Figure adapted from Ryona et al. 2008 even though there was rain and cool, there was also sun. Ithaca Beer Company makes their Partly Cloudy witbier for good reason, but this summer didn t seem particularly overcast, especially considering the other factors. Also promising is that the degradation engine, speedgoverned and plodding though it may be, is running as well as it possibly can run during the current stretch of weather. Finally, not all of the regions in the state had the same spring and early summer. Lake Erie, for example, was much drier in the early season, which can lead to other problems but MPs ain t one of em. Overall, we are in the position of sampling and waiting, which tends to be the position we re in every year. The deck may be slightly stacked, but that comes with the territory when trying to make a living in agriculture. Here s to enough hang time, whatever that means for you. For a more comprehensive review of IBMPs, see the first-ever Research Focus article in Appellation Cornell, featuring the great work of Imelda Ryona, Justin Scheiner, Alan Lakso, Gavin Sacks, Bruce Pan, Justine Vanden Heuvel and others: Martinson, T. and Scheiner J. 2010. Cornell Researchers Tackle Green Flavors in Red Wines. Appellation Cornell, Issue #1, Research Focus 2010-1. Cornell University. https://grapesandwine.cals.cornell.edu/sites/grapesandwine.cals.cornell.edu/files/shared/documents/ research-focus-issue-1.pdf Ryona, I, B. Pan, D. Intrigliolo, A. Lakso, and G. Sacks. 2008. Effects of Cluster Light Exposure on 3-Isobutyl-2-methoxypyrazine Accumulation and Degradation Patterns in Red Wine Grapes (Vitis vinifera L. Cv. Cabernet Franc) J. Agric. Food Chem. 2008, 56, 10838-10846 Page 5
Fruit Composition Report - 9/18/2017 Samples reported here were collected on Monday, September 18. Where appropriate, sample data from 2016, averaged over all sites is included. Tables from 2016 are archived at http://grapesandwine.cals.cornell.edu/newsletters/veraison-harvest. Next samples will be collected on Monday, September 18. YAN measurements are included this week. Previous YAN measurements from 9/5 included for comparison. Aromella Finger Lakes 9/18/2017 Geneva thinned 1.68 19.2 2.84 13.2 93 Finger Lakes 9/18/2017 Geneva unthinned 1.71 18.0 2.84 14.0 127 Average 9/18/2017 1.69 18.6 2.84 13.6 110 Prev. Average 9/11/2017 1.61 16.9 2.78 15.4 196 Baco Noir Hudson Valley 9/18/2017 HARVEST Final Sample 9/11/2017 Southwest HV 1.22 18.5 3.28 13.6 418 Cabernet Franc Finger Lakes 9/18/2017 E. Seneca 1.60 18.3 3.01 10.9 290 Finger Lakes 9/18/2017 W. Seneca 1.17 15.8 2.91 12.0 12 Finger Lakes 9/18/2017 Cayuga 1.45 16.8 2.99 10.9 42 Finger Lakes 9/18/2017 Dresden 1.28 17.4 3.01 11.0 36 Finger Lakes 9/18/2017 Wayne County 1.33 15.7 2.95 12.5 93 Finger Lakes 9/18/2017 Geneva 1.46 17.3 3.03 12.2 43 Finger Lakes 9/18/2017 Lansing 1.51 16.3 3.04 11.3 68 Finger Lakes 9/18/2017 Keuka 1.13 16.9 2.95 13.3 19 Hudson Valley 9/18/2017 Southwest HV 1.50 17.6 3.37 8.2 362 Hudson Valley 9/18/2017 East Central HV 1.31 18.5 3.32 9.2 168 Long Island 9/18/2017 LI-05 1.74 18.5 3.33 8.0 207 Long Island 9/18/2017 LI-09 1.41 17.2 3.45 7.5 230 Average 9/18/2017 1.41 17.2 3.11 10.6 131 Prev. Sample 9/11/2017 1.41 16.0 3.02 12.9 107 16 Average 9/19/2016 1.51 19.9 3.34 6.7 109 Catawba Finger Lakes 9/18/2017 Keuka 2.95 13.1 2.77 17.7 104 Prev Sample 9/11/2017 Keuka 2.71 11.1 2.55 27.4 61 16 Sample 9/19/2016 2.13 16.2 2.92 9.2 56 Cayuga White Finger Lakes 9/18/2017 Keuka 2.92 16.6 2.99 10.6 128 Finger Lakes 9/18/2017 Cayuga 3.03 17.1 3.13 8.8 194 Finger Lakes 9/18/2017 Dresden 2.87 18.6 3.03 9.9 200 Finger Lakes 9/18/2017 Ithaca 2.97 17.8 2.94 11.0 130 Average 9/18/2017 2.95 17.5 3.02 10.1 163 Prev Sample 9/11/2017 2.84 16.5 2.94 11.9 153 16 Average 9/19/2016 2.50 16.9 3.12 6.7 127 Page 6
Chardonnay Finger Lakes 9/18/2017 Cayuga 1.41 15.0 2.98 12.4 199 Finger Lakes 9/18/2017 W. Seneca 1.44 17.5 2.98 10.0 109 Finger Lakes 9/18/2017 Dresden 1.54 19.7 3.08 8.5 192 Finger Lakes 9/18/2017 Lansing 1.60 18.3 3.13 9.6 98 Long Island 9/18/2017 LI-03 1.84 17.6 3.32 10.3 495 Average 9/18/2017 1.56 17.6 3.10 10.1 219 Prev. Sample 9/11/2017 1.53 16.8 3.01 12.0 127 16 Average 9/19/2016 1.42 21.3 3.39 6.1 141 Concord Finger Lakes 9/18/2017 Keuka 3.31 12.9 3.08 8.3 135 Finger Lakes 9/18/2017 W. Canandaigua 3.50 13.1 3.05 9.2 132 Lake Erie 9/18/2017 Portland 3.86 16.5 3.19 11.4 299 Lake Erie 9/18/2017 Fredonia 3.65 15.7 3.00 10.9 161 Average 9/18/2017 3.58 14.6 3.08 9.9 182 Prev Sample 9/11/2017 3.25 13.3 2.95 11.6 190 16 Sample 9/19/2016 2.69 15.9 3.29 5.7 117 Corot Noir Finger Lakes 9/18/2017 Dresden 2.39 14.7 3.11 9.7 174 Finger Lakes 9/18/2017 Geneva thinned 2.32 15.5 2.90 11.3 35 Finger Lakes 9/18/2017 Geneva unthinned 2.09 15.3 2.90 10.8 49 Average 9/18/2017 2.27 15.2 2.97 10.6 86 Prev Sample 9/11/2017 2.16 14.2 2.86 12.6 107 16 Sample 9/19/2016 Dresden 1.74 16.8 3.48 5.1 100 Frontenac Hudson Valley 9/18/2017 Northeast HV 1.14 25.1 3.05 16.0 287 Thousand Islands 9/18/2017 Clayton-Rake/LR no sample Average 9/18/2017 1.14 25.1 3.05 16.0 287 Prev. Average 9/11/2017 1.13 19.7 2.92 19.0 16 Sample 9/19/2016 1.30 22.0 3.13 15.5 400 Gruner Veltliner Finger Lakes 9/18/2017 Dresden 1.58 16.4 3.04 7.7 181 Prev Sample 9/11/2017 Dresden 1.56 16.4 2.97 9.7 121 Final 16 Sample 9/6/2016 Dresden 1.37 19.6 3.23 6.0 La Crescent Champlain 9/18/2017 Central Champlain 1.32 18.7 2.89 15.7 82 Thousand Islands 9/18/2017 Clayton No Sample Champlain 9/18/2017 Northern Champlain 1.06 19.9 2.90 15.0 132 Hudson Valley 9/18/2017 Northwest HV 1.21 20.2 2.90 16.3 135 Finger Lakes 9/18/2017 Geneva thinned 1.46 24.0 2.90 17.0 124 Finger Lakes 9/18/2017 Geneva unthinned 1.37 22.5 2.94 16.0 96 Average 9/18/2017 1.28 21.1 2.91 16.0 114 Prev. Average 9/11/2017 1.32 19.5 2.86 17.3 16 Final Average 9/12/2016 1.26 22.5 3.07 13.0 136 Page 7
Lemberger Finger Lakes 9/18/2017 Keuka 1.77 19.1 3.02 10.6 57 Finger Lakes 9/18/2017 Dresden 2.01 18.0 3.02 10.2 180 Average 9/18/2017 1.89 18.6 3.02 10.4 118 Prev. Average 9/11/2017 1.84 17.8 2.92 11.9 125 16 Sample 9/19/2016 1.82 21.9 3.17 7.6 124 Malbec Long Island 9/18/2017 LI-06 1.95 18.3 3.36 10.9 299 Prev Sample 9/11/2017 LI-06 1.90 16.9 3.13 14.1 295 16 Sample 9/19/2016 2.44 18.9 3.52 7.4 238 Marechal Foch Hudson Valley 9/18/2017 Northeast HV 1.28 20.9 3.21 11.2 125 Prev. sample 9/11/2017 Northeast HV 1.14 19.7 3.17 10.7 Marquette Champlain 9/18/2017 Central Champlain 1.42 20.5 2.78 16.7 146 Champlain 9/18/2017 Northern Champlain 1.01 19.2 2.79 15.5 214 Finger Lakes 9/18/2017 Dresden 1.67 22.4 3.14 13.0 249 Finger Lakes 9/18/2017 Ithaca 1.49 22.9 2.90 16.3 191 Finger Lakes 9/18/2017 Keuka HARVEST Hudson Valley 9/18/2017 Northeast HV 1.52 22.8 3.23 13.0 337 Hudson Valley 9/18/2017 Northwest HV 1.51 21.0 2.84 15.9 214 Lake Erie 9/18/2017 Fredonia HARVEST Thousand Islands 9/18/2017 Clayton No Sample Average 9/18/2017 1.44 21.5 2.95 15.0 225 Prev Sample 9/11/17 1.46 20.0 2.90 16.0 401 16 Sample 9/19/2016 1.20 24.5 3.12 11.8 278 Merlot Hudson Valley 9/18/2017 East Central HV 1.53 21.4 3.69 5.8 170 Long Island 9/18/2017 LI-04 2.02 18.2 3.38 8.0 253 Long Island 9/18/2017 LI-10 1.64 18.1 3.53 7.1 309 Average 9/18/2017 1.61 20.5 3.27 6.9 251 Prev Sample 9/11/2017 1.58 18.0 3.37 8.6 212 16 Average 9/19/2016 1.77 19.6 3.59 6.1 165 Niagara Lake Erie 9/18/2017 HARVEST 17 Final Sample 9/11/2017 Portland 3.35 14.2 3.15 6.1 153 16 Final Sample 9/12/2016 Portland 3.38 16.3 3.18 5.2 77 Page 8
Noiret Finger Lakes 9/18/2017 Wayne County 1.88 15.5 2.96 11.9 203 Prev Sample 9/11/2017 Wayne County 1.86 14.1 2.94 14.0 328 16 Final Sample 9/12/2016 1.74 18.4 3.29 9.1 251 Pinot Noir Finger Lakes 9/18/2017 W. Cayuga 1.39 18.2 3.15 8.4 65 Finger Lakes 9/18/2017 E. Seneca 1.52 19.6 3.12 9.9 64 Finger Lakes 9/18/2017 Ontario 1.47 18.7 3.14 10.1 81 Hudson Valley 9/18/2017 Southwest HV 1.39 18.4 3.40 8.2 699 Hudson Valley 9/18/2017 East Central HV 1.06 21.3 3.67 7.1 474 Average 9/18/2017 1.36 19.2 3.30 8.7 277 Prev Sample 9/11/2017 1.38 18.0 3.28 14.9 241 16 Sample 9/19/2016 1.25 20.2 3.35 5.8 109 Riesling Finger Lakes 9/18/2017 W. Seneca 1.55 15.3 2.80 15.9 77 Finger Lakes 9/18/2017 E. Seneca 1.70 14.3 2.95 14.7 191 Finger Lakes 9/18/2017 CL 90 Cayuga 1.36 15.2 2.86 14.5 115 Finger Lakes 9/18/2017 Keuka 1.23 15.5 2.88 14.7 109 Finger Lakes 9/18/2017 W. Canandaigua 1.45 14.8 2.86 14.7 163 Finger Lakes 9/18/2017 Dresden 1.31 17.6 2.85 13.5 154 Finger Lakes 9/18/2017 E. Seneca cl90 1.55 17.0 2.76 13.5 45 Finger Lakes 9/18/2017 E. Seneca cl239 1.55 16.5 2.78 13.5 213 Finger Lakes 9/18/2017 E. Seneca cl198 1.71 16.3 2.82 12.7 207 Finger Lakes 9/18/2017 Wayne County 1.39 16.0 2.87 15.4 280 Finger Lakes 9/18/2017 Geneva 1.67 16.9 2.90 14.5 146 Finger Lakes 9/18/2017 Lansing 1.69 15.8 2.88 13.9 73 Hudson Valley 9/18/2017 Southwest HV 1.68 17.8 3.24 8.7 168 Hudson Valley 9/18/2017 East Central HV 1.11 18.4 3.22 8.8 157 Lake Erie 9/18/2017 Portland 1.71 18.7 3.16 9.9 266 Long Island 9/18/2017 LI-01 1.49 18.1 3.21 9.5 117 Average 9/18/2017 1.51 16.5 2.94 13.0 155 Prev Sample 9/11/2017 1.40 15.4 2.86 15.7 165 16 Sample 9/19/2016 1.40 18.7 3.07 8.9 115 Sauvignon Blanc Long Island 9/18/2017 LI-02 1.68 19.7 3.29 8.6 198 Prev Sample 9/11/2017 LI-02 1.57 19.2 3.09 11.0 216 16 Final Sample 9/12/2016 LI-02 1.35 19.8 3.44 9.0 244 Seyval Blanc Finger Lakes 9/18/2017 Cayuga HARVEST Hudson Valley 9/18/2017 Southwest HV 1.65 18.7 3.28 6.5 149 Hudson Valley 9/18/2017 East Central HV 1.67 20.3 3.10 8.6 68 Hudson Valley 9/18/2017 East Central HV 1.75 19.6 3.08 9.1 194 Hudson Valley 9/18/2017 East Central HV HARVEST Average 9/18/2017 1.69 19.5 3.15 8.1 137 Prev Sample 9/11/2017 1.78 18.5 3.12 9.6 190 16 Final Sample 9/12/2016 1.69 18.8 3.14 8.6 157 Page 9
St Croix Finger Lakes 9/18/2017 Geneva thinned 2.31 18.2 3.14 13.7 158 Finger Lakes 9/18/2017 Geneva unthinned 2.34 18.3 3.12 13.1 184 Average 9/18/2017 2.32 18.3 3.13 13.4 171 Prev Sample 9/11/2017 2.26 17.7 3.08 13.8 176 16 Final Sample 9/12/2016 Geneva 1.56 19.4 3.50 5.2 188 Traminette Finger Lakes 9/18/2017 Keuka 1.74 16.5 2.78 14.3 142 Finger Lakes 9/18/2017 Cornell Orchards 1.97 16.5 2.77 16.0 43 Finger Lakes 9/18/2017 Geneva thinned 2.09 17.6 2.80 14.0 58 Finger Lakes 9/18/2017 Geneva unthinned 2.09 17.1 2.80 14.9 77 Average 9/18/2017 1.97 16.9 2.79 14.8 80 Prev Sample 9/11/2017 1.87 14.8 2.67 19.2 124 16 Sample 9/19/2016 1.73 20.2 3.18 9.1 212 Valvin Muscat Finger Lakes 9/18/2017 Geneva thinned 3.24 15.9 2.99 13.4 53 Finger Lakes 9/18/2017 Geneva unthinned 3.09 15.9 2.99 12.2 41 Average 9/18/2017 3.16 15.9 2.99 12.8 47 Prev Sample 9/11/2017 2.69 15.2 2.89 15.7 176 Vidal Blanc Finger Lakes 9/18/2017 Dresden 2.03 16.3 2.97 14.1 222 Prev Sample 9/11/2017 Dresden 1.77 15.5 2.86 16.4 189 16 Sample 9/19/2016 Dresden 1.54 16.9 3.18 7.2 103 Vignoles Finger Lakes 9/18/2017 VSP Keuka 1.78 19.1 2.87 18.7 230 Finger Lakes 9/18/2017 W. Seneca 1.68 20.9 2.98 21.9 184 Average 9/18/2017 1.73 20.0 2.93 20.3 207 Prev Sample 9/11/2017 1.83 18.3 2.83 20.9 16 Sample 9/19/2016 1.29 23.6 3.07 12.9 242 Page 10
A Little-Known Grape Insect: Grapeleaf Skeletonizer Early September. These grapeleaf skeletoizer larvae (Harrisina americana). were found feeding on wild Vitis aestivalis grapevines along the Black Diamond trail near Taughannock Falls, Trumansburg NY. They are not generally found in commercial vineyards. Photo by Tim Martinson This newsletter was made possible with support from the New York Wine and Grape Foundation, the Lake Erie Regional Grape Program, Inc. and the New York State Agricultural Experiment Station at Cornell University.. Veraison to Harvest is a joint publication of: Cornell Enology Extension Program Statewide Viticulture Extension Program Long Island Grape Program Finger Lakes Grape Program Lake Erie Regional Grape Program Eastern New York Regional Horticulture Program Copyright 2017 Cornell University The information, including any advice or recommendations, con-tained herein is based upon the research and experience of Cornell Cooperative Extension personnel. While this information constitutes the best judgement/opinion of such personnel at the time issued, neither Cornell Cooperative Extension nor any representative thereof makes any representation or warrantee, express or implied, of any particular result or application of such information, or regarding any product. Users of any product are encouraged to read and follow product-labeling instructions and check with the manu-facturer or supplier for updated information. Nothing contained in this information should be interpreted as an endorsement expressed or implied of any particular product. Page 11