Glycosylated aroma precursors in Microvine grapevine fruit following guaiacol foliar application
Several previous open-field experiments have shown that foliar applications with guaiacol solutions can modify wine volatile composition. After such treatment, guaiacol glycoconjugates were detected in fruits, leaves and shoots of Monastrell variety, suggesting that aglycone compounds could be released during wine processing with some changes on the wine aroma.
Modification of the source relationship and its influence on the primary and secondary metabolism in Tannat grapes
In this study, the response of Tannat, an emblematic variety of the Uruguay, to the modification of the source relationship (S/S) was evaluated, through the leaf removal on fruit set and thinning of clusters at veraison, measuring the composition of the grape.
Effect of vine nitrogen status on grape berry aromatic potential and on wine aroma
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The effect of post-harvest defoliation on carbon resources of high yielding Sauvignon blanc grapevines
We wanted to quantify the importance of post-harvest carbohydrate assimilation to replenish vine reserves, additional to maintaining optimal growth, productivity and fruit quality of high yielding vigorous Sauvignon blanc grapevines.
Different thermal environment during dormant season lead to a differential cold hardiness status in Vitis vinifera cv. Malbec–The experience in Mendoza, Argentina
En Vitis sp., la resistencia al frío (RF) adquirida durante la estación de dormición (ED) es crucial para la supervivencia y el rendimiento. La mayoría de la información sobre RF es obtenida en áreas cercanas a 40°N, donde las temperaturas causan daños recurrentes en viñedos.
What does the functional-structural plant model hydroshoot tell us about the reasons for grapevine (Vitis vinifera L.) photosynthesis depression?
Grapevine is a species that get along with water deficit. Yet, it cannot always stand thirst when accompanied by high temperatures, reducing noticeably its gas-exchange rates. Elucidating the origins of this reduction is a challenge, regarded the complex hydraulic, biochemical and energy processes lying behind gas-exchanges.
Heat berry: the influence of abiotic factors on the composition of berries, must and wine in Vitis vinifera L. cv. Riesling
It has been known for a long time that altering microclimate affects fruit composition and wine quality. The research project Heat Berry focuses on future scenarios of the climate change regarding higher temperatures and the risk of increasing sun radiation to the fruit. Field experiments were conducted in 2015 and 2016 at an experimental site at Geisenheim (Germany) using Riesling (clone 198-25 grafted to rootstock SO4).
Effect of ethephon application on grape ripening and wine quality during two years
Ethephon is known to be a growth regulator that, when applied to the plant, is metabolized into ethylene. In this study, it has been evaluated the foliar application at the beginning of veraison of a commercial product (Fruitel 180, 18% w/v ethephon) in a Vitis vinifera L. cv. red Tempranillo vineyardin La Rioja (north of Spain).
Evaluation of different tools to measure water status in vines (Vitis vinifera L.) with cv. Tempranillo blanco
Different irrigation treatments were applied in vines (Vitis vinifera L.) with cv. Tempranillo blanco during 2016 in an experimental field located in Rincón de Soto (La Rioja, Spain), 42°12’37″N; 1°52’36″W.
Preliminary results of the eliminary results of the characterizarion of Argentine wines and the foreseeing of the future effects of global warming on the quality and style
The few studies that relates the chemical composition and the organoleptic characteristics of Argentine wines with the origin show that climate is a very important factor.
Assessing the use of shading to mitigate degradation of grape metabolic content in warm climates
Global warming, and the ongoing expansion of viticulture to marginal areas is increasing the surface area of vineyards experiencing high solar irradiance and daily temperatures, leading to the loss of quality-related compounds.
Combined effects of drought and high temperature on gas exchange and growth of Malbec grapevines
Drought and high temperature are important threats to plant growth and sustainable agriculture worldwide.
A slight temperature increase modulates changes in physiology and grape quality of two commercial vines of central Chile
Current climate change sceneries represent a menace for grapevine production. Models have estimated than in the middle of the century temperature will increase aprox. 2°C.
Management of the vineyard: impact on the provision of ecosystem services
According to the Millennium Ecosystem Assessment (MEA, 2003), ecosystem services are the benefits people receive from ecosystems.
Estimating the impact of irrigation water salinity on vines in the Mendoza and Tunuyán river basins
Studies on climate change impact on the South American Central Andes predict scenarios of reduced river flows and salinity increases downstream of the Mendoza and Tunuyán River basins and indicate that these impacts would lead to a reduction in crop yields.
Classification of viticulture and associated environment by digital processing of orbital images in the “Campanha” wine region, Brazil
In the “Campanha” wine region, viticulture occurs under diverse geomorphology, soil and land use.
Success of organic grapes in different vineyard conditions: yield and berry quality
Organic farming may be one solution to reduce the quantities of pesticides used in viticulture. Various innovative organic practices are required because Protected Designation of Origin (PDO) vineyards are planted in very different soil and climate conditions.
The comparison of organic, biodynamic, and conventional farming in Pinot blanc and Rhine Riesling in the 2016 vintage year
This study reports results concerning the comparison of conventional, organic and biodynamic farming in a Pinot blanc and Rhine Riesling vineyard in Northern Italy.
Soil loss study in areas of vineyards versus permanent preservation areas in the “Vale dos Vinhedos”, Brazil
In the region of the Denomination of Origin (DO) “Vale dos Vinhedos”, Brazil, a study evaluated the effect of the occupation of Permanent Preservation Areas (PPA) in conflict with vineyards in regard to potential erosive soil losses.
Variability of chemical parameters of irrigation water in Mendoza’s northern and central oases
Sustainable development in Mendoza’s oases should guarantee water availability in both quantity and quality.