Terroir 2016 banner
IVES 9 IVES Conference Series 9 Spatial suitability analysis for site selection of vineyards using biophysical models and computational intelligence

Spatial suitability analysis for site selection of vineyards using biophysical models and computational intelligence

Abstract

Developing a sustainable agricultural production system and acquiring the full potential of land resources requires employing land-use assessment. This entails knowledge of the climate, soil, and topography of the area of interest. There is a great potential for Growth and development of grapes (Vitis vinefera L.) in the Pacific North West region of the United States. However, there are few studies that have focused on the development of a comprehensive spatial suitability system. The main objective of this study was to develop a spatial site selection system that can help select suitable areas for grapevine cultivation.

Several bio-climatic indices such as Growing Degree Days (GDD), Frost Free Days (FFD), Huglin Index (HI) were calculated for a period of 30 years using daily weather data obtained from the University of Idaho Gridded Surface Meteorological dataset. The soil data were obtained from the gSSURGO dataset and several properties such as soil depth, pH, available water holding capacity (AWC), and drainage class were extracted for the study area. The topographical data were obtained from the National Elevation dataset. The data were then reclassified using fuzzy logic and the soil, weather, and topographic suitability maps were developed. The final vineyard potential scores were obtained by combining the soil, weather, and topographic suitability. The potential scores had a range from 0 to 1, where 0 pertains to non-suitable areas and 1 refers to optimal sites. Consequently, the vineyard potential score for the vineyards that have been established in the state of Washington were obtained from the Crop Scape land cover maps and used as a measure of evaluation.

The spatial site selection system was able to classify the study area to 10 different regions based on their vineyard potential. The evaluation results indicated that 84% of the vineyards that are already established in the study area have a vineyard potential score ranging from 0.91 to 1. Another 15 % had a potential score ranging from 0.8 to 0.9. The results of this study can help decision makers, growers, and others with conducting a more precise land-use assessment for grapevine production.

DOI:

Publication date: June 23, 2020

Issue: Terroir 2016

Type: Article

Authors

Golnaz Badr

Department of Viticulture and Enology, Washington State University

Contact the author

Keywords

Terroir, wine, viticulture, spatial suitability, zoning

Tags

IVES Conference Series | Terroir 2016

Citation

Related articles…

Terroir, climat et sol

Le sol et le climat occupent une place prépondérante dans le concept de terroir, pour lequel l’OIV s’apprête à adopter une définition internationale. Les travaux de recherche qui ont été menés depuis une trentaine d’années sur ces thèmes et qui ont été, pour les plus importants, présentés dans les 7 premiers Congrès Internationaux des Terroirs Viticoles ont considérablement modifié les connaissances sur le fonctionnement des terroirs viticoles dans le monde et le comportement des consommateurs avertis par rapport aux vins de terroirs.

REGAVID a decision tool to deficit irrigation in a temperate climate (DO Monterrei – Spain)

In temperate climates, such as in the North of Spain, the use of irrigation in the vineyard has not been required, due to the usual rainfall from June to August. In some large vineyards, irrigation management has been carried out, based on occasional support irrigation, or for the application of nutrients (fertigation). Currently it is necessary to implement decision support models to manage irrigation water in real time and avoid misuse of a scarce resource. Moreover, quality standards must be achieved, as in the previous rainfed viticulture.

Cold plasma at atmospheric pressure for eliminating Brettanomyces from oak wood

In the oenological industry, the maintenance and sanitation of oak barrels has become a fundamental task. The wood has a porous structure that facilitates the penetration not only of the wine, but of the microorganisms it contains, such as the alterative yeast Brettanomyces bruxellensis.

Contribution of grape and oak wood barrels to pyrrole content in wines – Influence of several cooperage parameters

Chardonnay is the world’s most planted white grape variety and has met a great commercial success for decades.

Toward an automatic way to identify red blotch infected vines from hyperspectral images acquired in the field

Vineyards are affected by different virus diseases, which can lower yield and affect the quality of grapes. Grapevine red blotch disease is one of them, and no curative solution exists. Once infected, a vine must be removed and replaced with a virus-free vine (aka roguing). Screening vineyards to look for symptoms can be time-consuming and needs well-trained experts. To improve this process, we conducted an experiment identifying infected vines using a hyperspectral camera in the field.