(Article of periodic en Anglais - 2013)

Document title

Spatial correlation between the composition of the clay fraction and contents of available phosphorus of an Oxisol at hillslope scale

Authors(s) and Affiliation(s)

(1) UNESP, Depto. de Solos e Adubos, Jaboticabal, BRESIL
(2) UNESP, Depto. de Ciências Exatas, Jaboticabal, BRESIL
(3) ESALQ/USP, Dep. de Ciência do Solo, Piracicaba, BRESIL


The spatial correlations between the composition of the clay fraction (iron - Fe and aluminum - Al oxides, kaolinite and organic matter - OM) and contents of available phosphorus (P) of an Oxisol were evaluated at hillslope scale under sugarcane cultivation. The studied area is located in Guariba, state of São Paulo, in the Paulista Western Highlands geomorphological province. Soil OM and available P contents were subjected to descriptive statistics and geostatistical analyses in order to assess their variability and spatial dependence. Available phosphorus had positive spatial correlation with high crystalline goethite, hematite and gibbsite. Identifying small hillslope curvatures is useful with a view to better understanding their relationships with soil organic matter and available phosphorus, as well as kaolinite and Fe and Al oxide attributes. A simple correlation analysis by itself is inadequate to relate attributes, which requires a supplemental, geostatistical technique


Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2013, vol. 100 [pp. 100-106]

Bibliographic references : 1 p.

Collation : 4 fig., 4 tabl.



INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2012.07.016

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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