Effect of climate extremes and elevation on the Tempranillo grapevine response: case study in Ribera Del Duero DO over the period 2004-2023.

The objective of the research was to evaluate the effect of climatic extremes on the response of Tempranillo compared to the average recorded over 20 years in the Ribera del Duero DO, and to assess the main variables driving the changes and differences at different elevations. To achieve these objectives, phenological dates and grape composition were evaluated in 12 plots distributed within the DO at elevations between 725 and 915 m above sea level. Variations were related to climatic variables analysed in weather stations located in the vicinity of the plots studied.

Assessment of nitrogen and phosphorus losses due to erosion in compost-treated and non-treated vineyard soils: effect of rainfall intensity.

Vineyards in Mediterranean areas suffer from significant soil degradation through erosion, due to rainfall and soil characteristics, as well as soil management practices. Previous studies pointed out the nutrient losses produced by erosion and the benefits that some management practices could have on reducing erosion. This research tried to evaluate the effect of events of different intensities and to assess whether the beneficial effect of compost amendment may pose a potential risk of nutrient loss and environmental pollution in particular under high-intensity events.

Combining cosmic-ray neutron sensor and fallout Cs to explore the connection of soil water content with soil redistribution in an agroforestry hillslope.

To ensure sustainable agricultural management, there is a need not only to quantify soil erosion rates but also to obtain information on the status of soil water content and soil loss under different soil types and land uses. A clear understanding of the temporal dynamics and the soil moisture spatial variability (SMSV) will help to control soil degradation by hydrological processes. This study represents the first attempt connecting cosmic-ray neutron sensors (CRNS) with soil erosion research, a novel approach to explore the complex relationships between soil water content (SWC) and soil redistribution processes using two of the most powerful nuclear techniques, CRNS and fallout Cs.

Macabeo (Viura) grape response to climate variability in areas located at different elevations in the Rioja Designation of Origin.

Background: This research aims to analyse the influence of climatic conditions on phenology and grape composition of Macabeo, which is one of the white varieties authorized in Rioja DOCa. Phenological dates for flowers separated and harvest, and grape composition were evaluated for the period 2008-2020 in five plots, located at different elevations (457-650 m a.s.

Variability of Tempranillo grape composition in the Rioja DOCa (Spain) related to soil and climatic characteristics.

Background: Soil and climate are terroir elements that condition vine response. This research was intended to evaluate the variability of grape composition of the Vitis vinifera L. cv.

Potassium uptake and redistribution in Cabernet Sauvignon and Syrah grape tissues and its relationship with grape quality parameters.

Background: The present study investigated the potassium (K) levels in petiole and other grape tissues during ripening in Vitis vinifera Shiraz and Cabernet Sauvignon, grown in areas with differences in vigour, as well as with and without leaf thinning. Potassium levels in petiole, seeds, skin and flesh were related to grape pH, acidity, berry weight and total soluble solids.

Results: Differences in K levels in petiole were in accordance with the differences in soil K.

Grape harvest and yield responses to inter-annual changes in temperature and precipitation in an area of north-east Spain with a Mediterranean climate.

This study presents an analysis of temperature and precipitation trends and their impact on grape harvests in the Penedès region (NE Spain). It includes analyses of maximum, minimum and mean daily temperatures (for both the growing and ripening seasons) and daily rainfall (for the hydrological year, the growing season and each phenological stage) for three observatories in the immediate area. We analysed a series of factors: beginning and end harvest dates; the day on which a given potential alcoholic degree was reached; and yield for several varieties of grape grown in the area in relation to climatic variables.

Hillslope terracing effects on the spatial variability of plant development as assessed by NDVI in vineyards of the Priorat region (NE Spain).

The availability of heavy machinery and the vineyard restructuring and conversion plans of the European Union Common Agricultural Policy (Commission Regulation EC no. 1227/2000 of 31 May 2000) have encouraged the restructuring of many vineyards on hillslopes of Mediterranean Europe, through the creation of terraces to favor the mechanization of agricultural work. Terrace construction requires cutting and filling operations that create soil spatial variability, which affects soil properties and plant development.