Terroir 2010 banner
IVES 9 IVES Conference Series 9 International Terroir Conferences 9 Terroir 2010 9 Geology and Soil: effects on wine quality (T2010) 9 Assessment of the optimal number of observations in the study of vineyard soil (Rigosol)

Assessment of the optimal number of observations in the study of vineyard soil (Rigosol)

Abstract

A study of soil pH on the experimental field resulted in a high variability of pH on a very small scale. This kind of heterogenity in soil pH have effects on growth of two grapevine varieties on rootstock Kober 5BB: Riesling and Pinot Noir A number of 104 soil samples were taken from an area of 1.43 ha from two depths. A goal of this experiment was to find the optimum number of samples for pH studies, and to implement the obtained results in further investigation on experimental fields. Therefore, in this paper we compared diferent deterministic interpolation techniques: inverse distance weight, splines and local polynomial interpolation, on the results of soil pH. Root mean square error (RMSE) statistitics obtained after cross validation procedure was used for the choice of appropriate exponent value for IDW, spline and local interpolation. The obtained interpolation parameters were used for mapping the field and the most accurate technique was IDW, which was further used in creation of pH maps with lower number of samples: 54, 34, 29, 24, 19 and only 14 pH samples. Maps were classified and compared by means of percentage difference in area among classes of pH in respect to classes obtained after maximum sampling. The results indicated that the criteria of 15% of change in pH area over classes could be satisfied with only on third of the samples. An obtained results will be used for further sampling of the whole experimental area.

DOI:

Publication date: December 3, 2021

Issue: Terroir 2010

Type: Article

Authors

Djordjević, A., Životić, Lj., Sivčev, B., Pajić, V., Ranković-Vasić, Z., Radovanović, D

University of Belgrade, Faculty of Agriculture, Nemanjina 6, Belgrade, Zemun, Republic of Serbia

Contact the author

Keywords

vineyard, soil, pH, interpolation, IDW, RBF, LP

Tags

IVES Conference Series | Terroir 2010

Citation

Related articles…

Promoting sustainability in Mediterranean agriculture: insights from the Portuguese vine & wine sector

Agroecology is an integrated approach that simultaneously applies ecological and social concepts and principles to redesign and manage food and agricultural systems, promoting agroecosystems with the necessary biological, socio-economic, and institutional diversity and alignment to support greater efficiency. Thus, several studies have been carried out at promoting the adoption of more agroecological practices among farmers and a wider audience concerning soil conservation and health maintenance.

Shading grapevines with dynamic agrivoltaics address the challenge of early ripening and wine quality related with climate change

Context and purpose of the study. Climate change accelerates grapevine’s phenology, advancing harvests by 2–3 weeks over the past 40 years negatively affecting wine style due to a lack of acidity and too much alcohol.

Outils de caracterisation et zonage des paysages viticoles: application aux vignobles français

Un paysage viticole est une relation entre des formes, dimension objective, et la perception que nous en avons, dimension subjective, émotionnelle. La viticulture n’est pas seulement productrice d’un vin, elle contribue également à façonner le paysage. Pourtant, jusqu’à présent, la connaissance des terroirs était principalement basée sur la caractérisation de leur aptitude à produire des vins de qualité.

Vineyard floor management intensity impacts soil health indicators and biodiversity across South Australian viticultural landscapes

Vineyard floors in warm, dry landscapes including those in South Australia, have traditionally been managed using intensive practices such as tillage and herbicides to control weeds and vegetation, thereby limiting competition with grapevines for water and nutrients in order to not compromise yields.

Exploring the dynamic between yeast mannoproteins structure and wine stability

Mannoproteins are macromolecules found on the surface of yeast cells, composed of hyperbranched polysaccharide negatively charged chains by mannosyl-phosphate groups, fixed to a protein core. during the alcoholic fermentation and aging on lees, these mannoproteins are released from the yeast cell wall and become the main yeast-sourced polysaccharide in wine. due to their techno-functional properties, commercial preparations of mannoproteins can be used as additives to better assure tartaric and protein stability.