Possible mode of action of paraffin oil as a spray agent in the control of powdery mildew of grapevine

Mineral oils (such as paraffin oil) have been used for a long time for disease control in vineyards. However the mode of action of this substance have not been studied yet. Our examinations highlighted that paraffin oils do not have a direct fungicide effect against neither the mycelia nor the conidia of Erysiphenecator, the causing agent of powdery mildew.

Biological, natural, and chemical control of causative agents of vine decline

The fungal diseases that affect grapevine wood are very limiting factors for viticulture and difficult to control. Several pathogens are associated with these diseases, such as the fungi of the family Botryosphaeriaceae. In this context, this work aimed to verify the effect of chemical fungicides, biological agents and plant extracts on the control of fungi Botryosphaeriaceae, causal agents of death and decline of the vines.

Investigating spatial heterogeneity in powdery mildew pressure at the plot scale: A precision viticulture approach

Powdery mildew (Erysiphe necator) (PM) is the most important and impacting fungal disease of grapevine (Vitis vinifera L). This disease remains difficult to model and forecast accurately because (i) the first signs of the disease in the vineyard are hardly noticeable in the first 30- 40 days after the onset of the epidemic (three to four pathogen generations), and (ii) its spatial distribution within or between neighboring plots is heterogeneous.

Occupational trajectories and social reproduction of small and medium grape growers (Luján de Cuyo, Mendoza-Argentina)

This work analyzes the social reproduction strategies of small and medium grape growers located in Luján de Cuyo, Mendoza, Argentina. Small grape growers are involved in a process of continuous “displacement” that corresponds to intra-generational and inter-generational mobility. It is observed that those who were part of the rural middle classes are facing their declassification with survival strategies that allow them to continue as owners in the productive chain.

Agro-ecological grape production in Mendoza province, Argentina–Technical and economic characterization

In this work agro-ecological vineyards are considered to all those who present a production scheme with low use of synthesis inputs and that tend to achieve a natural balance within the crop, regardless of their adherence to a formal certification system. It includes those that are self-declared agro ecological, organic or biodynamic.

Evolution of the area of the most important vine varieties in Argentina

Analysis of the evolution of the most cultivated vine varieties in Argentina during the period 2000-2016*. The area evolution by variety, color and aptitude in all the country and per province was analyzed. The total area under vine increased by 11%, varieties suitable for wine and / or musts increased by 9.5%, those suitable for fresh consumption had an increase by 46.5% and those suitable for raisins increased by 25.3%.

Mineral, phenolic and anthocyanin profile in flours of grape pomace: effects of diferent winemaking process

Wine industry is an important economic activity in the World, generating significant quantities of residues, mostly known as grape pomace. This material is rich in many nutrients, as fiber, minerals and antioxidants substances, such as phenolic compounds. These nutraceutical properties of grape pomace could be harnessed for human or animal consumption.

Phenolic composition of skins and pulps of grapes for traditional sparkling wines in the Northeast of Brazil

Among the compounds contributing to the grape and wine qualities, phenolics play an important role. Therefore, the objective of this study was to determine the phenolic compounds of skins and pulps of white and red grapes at harvest, destined to traditional sparkling wines, from two winegrowing regions producing tropical wines in the Northeast of Brazil.

Comparative evaluation of productive parameters and wine quality of Cabernet-Sauvignon selections on the Cauquenes area during 2015/2016 season

The use of clonal selections in viticulture allows having vineyards with more defined and uniform characteristics. Different clonal selections of a same cultivar can have different productive and quality based characteristics, which are dependent on environmental factors. The objective of this study was to characterize three grapevine clonal selections ENTAV-INRA (169, 191, and 337) and a massal selection of Cabernet Sauvignon, submitted to two yield range management by a cluster thinning treatment.