This release is available in Spanish.
Not all the terrain of the same vineyard has the same properties. Research undertaken by Neiker-Tecnalia (the Basque Institute for Agricultural Research and Development) confirmed that, over the same zone of cultivated land, there are plots with soils of different characteristics, a fact which gives rise to significant differences in the production of the grape and in the quality of the must. Knowing these differences enables the winegrowers to carry out zoning on their vineyards with the goal of better adapting to the needs of fertilisation, irrigation and treatment of the vine. Likewise, it enables carrying out a selective harvest, with plots producing batches of different qualities.
The research, led by doctor in Biology, Ms Olatz Unamunzaga, aimed to establish a zoning of a vineyard, according to the properties of the soil, as well as studying the productive behaviour and quality of wine. The study enables establishing a series of criteria that help to link the behaviour of a vineyard with the properties of the different soils found on the various plots of the vineyard under study.
Four types of soil
The research was carried out on a vineyard of eight hectares located in Oion (in the Basque province of Araba-lava) and belonging to Bodegas y Viedos Zuazo y Gastn. The researchers established a sampling of more than 190 points distributed systematically at various plots of the vineyard, spread over different topographies and orientation. Apart from the properties of the terrain and soil, different parameters related to the robustness and productivity of the vines were measured, such as the weight of the pruned wood, the production per each unit of vine, the number and weight of the bunches of grapes, the weight of the grape, and the quality of the must.
The Neiker-Tecnalia st
|Contact: Amaia Portugal|