Analysis techniques in the study of soil distribution

Courtney, F. M.; Nortcliff, Stephen

doi:10.1177/030913337700100104

Cited by 6 publications

(2 citation statements)

References 44 publications

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“…As shown in previous sections, very detailed soil survey methods give rise to a large number of SMU and, moreover, PCA suggests that Soil Taxonomy series would not be the most suitable classification to shape important edaphic properties for vineyard growing (water stress, iron chlorosis, vegetative growth). In order to reduce SMU number and find a soil classification more adjusted to viticultural zoning proposals, cluster analysis was selected among different statistical analyses, which are used in soil study (COURTNEY and NORTCLIFF, 1977), because this method allows the grouping of data, minimizing within-group variability while maximizing among-group variability (YOUNG and HAMMER, 2000). That is why this methodology is useful not only to simplify SMU, but to maintain most of the data variability.…”

Section: Viticultural Zoningmentioning

confidence: 99%

Application of a very detailed soil survey method in viticultural zoning in Catalonia, Spain

Ubalde¹,

Sort²,

Poch

2009

OENO One

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Aims: The aim of this study was to implement a very detailed soil survey methodology in 1,243 ha of vineyards in Catalonia (Spain) and analyse its suitability for viticultural zoning.Methods and results: The Soil Taxonomy at series level was used as the basis for classifying soils and delineating soil map units at 1:5,000 scale. A principal component analysis showed that most of the variability of soil properties, which was explained by factors related to water stress, iron chlorosis and vegetative growth, was not reflected exactly in the soil map unit classification. A k-means clustering analysis was proposed in order to group soils according to their potential for vine growing.Conclusion: A very detailed soil survey method, based on Soil Taxonomy, could be used as a basic map for viticultural zoning, when was directed at the differentiation of zones of distinct suitability for vineyard growing, by means of cluster analysis.Significance and impact of study: This study showed how very detailed soil maps, which can be difficult to interpret and put into practice, can be valorised as viticultural zoning maps by means of a simple methodology.

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Section: Viticultural Zoningmentioning

confidence: 99%

Application of a very detailed soil survey method in viticultural zoning in Catalonia, Spain

Ubalde¹,

Sort²,

Poch

2009

OENO One

View full text Add to dashboard Cite

show abstract

“…Soil data manipulation has been discussed by Webster (1977). Courtney and Nortcliff (1977) and Arkley (1976) discussed the use of statistics in soil classification and research. III Applications of soil geography: agricultural ' The fact that almost all governments, through their Ministries of Agriculture, and many entrepreneurs undertaking private developments finance soil surveys indicates the intrinsic value to the community of soil geography.…”

Section: Mapping and Soil Mapsmentioning

confidence: 99%