Impact of Under-vine Management in a Finger Lakes Cabernet Franc Vineyard

Impact of Under-vine Management in a Finger Lakes Cabernet Franc Vineyard
Author: Adam Duerr Karl
Publisher:
Total Pages: 224
Release: 2015
Genre:
ISBN:

Four under-vine management treatments were established in a Cabernet Franc vineyard to study their impact on vine growth and wine quality: glyphosate herbicide (GLY), cultivation (CULT), native vegetation (NV), and white clover (WC). Drainage lysimeters were installed in the under-vine treatments to monitor nutrient and pesticide concentrations in leachate. Smaller vine size and yields of NV cover crop in comparison to GLY vines suggested the potential for cover crops to limit vine vigor, whereas the greater yields of GLY vines, similarity in juice chemistry between treatments and the lack of sensory differences between treatments suggested that herbicide use promoted higher yields without a sacrifice in fruit quality. GLY leachate had greater concentrations of dissolved organic carbon, total nitrogen, and imidacloprid insecticide than NV leachate. These factors demonstrate the potential of cover crops to maintain soil quality and decrease the leaching of nutrients and agrochemicals in comparison to conventional practices.

Wine-Growers Guide

Wine-Growers Guide
Author: Philip M. Wagner
Publisher: Board and Bench Publishing
Total Pages: 272
Release: 1999-10-01
Genre: Technology & Engineering
ISBN: 093266492X

Back by popular demand, this guide to grape cultivation covers everything from establishing a vineyard to vine ailments. Suitable for both amateur and commercial growers, it considers viticulture conditions throughout North America.

Compositional and Sensory Analysis of Finger Lakes Riesling

Compositional and Sensory Analysis of Finger Lakes Riesling
Author: Rebecca Erin Nelson
Publisher:
Total Pages: 170
Release: 2011
Genre:
ISBN:

As the wine world continues to globalize, and industry competition grows, wine regions have increasingly focused on promoting one or two grape varietals which result in consistently expressive wines that best represent the viticultural area. A variety of studies have concentrated on defining regional cultivar typicity not only to enhance marketing techniques, but also to increase the understanding of a specific cultivar within the region from viticultural, enological, and sensorial perspectives, and findings may be relevant to the entire field. The Finger Lakes region of New York State has put itself on the world wine map through production of Rieslings with definitive sensory character. Preliminary assessments also suggest unique sensory profiles exist in the Rieslings according to which Finger Lake the grapes are cultivated. The sensory properties of Finger Lakes Rieslings, and the presence of subregional character, have not previously been investigated through rigorous, formal sensory analysis. This experiment sought to determine whether Riesling grapes grown along Keuka, Seneca, and Cayuga Lakes and from two distinct clones produced wines with unique sensory and compositional profiles. Six similar blocks of Riesling were selected to reduce effects of viticultural practices on compositional and sensory outcomes. Two sites, exclusively planted with clone 90 or clone 239, were selected from the east side of each lake. Viticultural treatments were standardized throughout the growing season. Inherent site and seasonal characteristics were recorded, and specific vine physiology and status measurements were collected from each block. Grapes were vinified, in duplicate lots from each site, by a standard winemaking protocol to yield two fermentation replicates. Instrumental analyses (GC-FID and GC-MS) were performed to quantify selected volatile aroma constituents of the Riesling wines. Generic descriptive analysis (DA) was performed on the wines by eleven panelists, screened for white wine consumption habits and sensory acuity. Sensory reference standards were developed during training and utilized along with intensity standards during orthonasal evaluation of the wines. Wines were also analyzed by HPLC for phenolic acids profiling. Statistical analyses of the volatile data showed that significant differences existed among some compounds. However, most of these differences were likely of no biological significance based on similarity of overall volatile profiles and vineyard site characteristics such as canopy light environment, vine water status, and crop load, factors which may impact wine quality. Monoterpene and TDN levels were at or below sensory threshold, and linalool was the only compound with apparent correlation to sensory data. DA panelists established 11 aroma attributes important to Finger Lakes Riesling wines. Wine aroma profiles were similar across vineyard sites, and two-way ANOVA results of lake, clone, and their interaction were not significant. Citrus, pineapple, linalool/floral, melon, and stemmy were among the descriptors present at the highest intensities. Phenolics data were characteristic of white wines as hydroxycinnamic acids and their tartrate esters dominated the profile. Higher concentrations of fertaric acid than coutaric acid were observed. While ANOVA showed significant results for lake, clone, and their interactions, clone had the strongest effect. These experiments indicate that sensory and aroma profiles of Riesling wines were similar despite differences in clonal material and growing conditions. However, the importance of seasonal growing conditions should not be overlooked as this experiment should be repeated over multiple years. The Riesling wines were also analyzed with less than six months of bottle age, and aging has the potential to impact wine differentiation. This sensory and volatile data is among the first to be reported for Riesling in the Finger Lakes. Riesling clone may be of interest to growers and winemakers due to effect on phenolic profile which may impact volatile stability and oxidative browning.

Summer in a Glass

Summer in a Glass
Author: Evan Dawson
Publisher: Union Square & Co.
Total Pages: 240
Release: 2011-04-05
Genre: Cooking
ISBN: 1402789629

New Yorks Finger Lakes is home to the countrys fastest-growing wine region, and each year millions of tourists spill into the tasting rooms of its wineries. Filled with fun and likable characters, Summer in a Glass brings this burgeoning area to life and captures its exciting diversity--from its immigrant German winemakers to its young, technically trained connoisseurs, from classic Rieslings to up-and-coming Cabernet Francs.