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…

Sugar accumulation disorder Berry Shrivel – from current knowledge towards novel hypothesis

In contrast to fruit and grape berry ripening, the biological processes causing ripening disorders are often much less understood, although shriveling disorders of fruits are manifold and contribute to yield losses and reduced fruit quality worldwide. Shrinking berries are a common feature for all shriveling disorders in grapevine although their timing of appearance during the berry ripening process and their underlying induction processes distinct them from each other. The sugar accumulation disorder Berry Shrivel (BS) is characterized by a suppression of sugar accumulation short after veraison resulting in berries low in sugar content and anthocyanins in berry skins, while the organic acid content is similar. Recent studies analyzed the biochemical, morphological and molecular processes affected in BS berries and linked early changes to the period of ripening onset [1,2].

Terroir in Tasting: A sensory approach for marketing fine Australian wines of provenance as memorable experiences

Aims: Establishing an image of fine wine through the Geographical Indication (GI) system is of interest to the Australian wine sector. Beyond provenance, the sensory experience of fine wine is often linked to consumption with appropriate foods. For this purpose, studies were undertaken to understand consumer perceptions of what

Replay of the Wine Vision 2040 event

A webinar organised by the UBC Wine Research Centre, on June 25th 2020. About Wine Vision 2040 Wine Vision 2040 is delivered by wine-passionate, high-profile individuals keen to share ideas and views that will spark conversations within wine communities.  No...

From vine to wine : a multi-trait experiment for increasing the varietal diversity in the bordeaux wine region. How to adapt to climate change without damaging terroir expression?

Context and purpose of the study climate change is impacting wine typicity across the globe, raising concerns in wine regions historically renowned for the quality of their terroir. Replacing some of the plant material can be an efficient lever for adapting to climate change. However, the change of cultivars also raises questions about the region’s wine typicity. This study, based on seven years of data, investigates the potential adaptability of over 50 different varieties in the bordeaux wine region.

From precursor identification to the study of the distribution of 3-methyl-2,4-nonanedione in red wines and spirits

Prematurely aged red wines are marked by intense prune and fig aromatic nuances that dominate the complex bouquet that can be achieved through bottle aging.