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Applied and Environmental Soil Science
Volume 2013 (2013), Article ID 790795, 10 pages
http://dx.doi.org/10.1155/2013/790795
Research Article

Assessment of Copper and Zinc in Soils of a Vineyard Region in the State of São Paulo, Brazil

1Instituto Agronômico de Campinas, Avenida Barão de Itapura 1481, 13012-970 Campinas, SP, Brazil
2UFC/CCA, Departament de Ciências do Solo, Campus do Pici, Bloco 807, 12168, 60021-970 Fortaleza, CE, Brazil
3Embrapa Monitoramento por Satélite, Avenida Soldado Passarinho 303, Fazenda Chapadão, 13070-115 Campinas, SP, Brazil

Received 7 March 2013; Revised 16 July 2013; Accepted 20 August 2013

Academic Editor: María Cruz Díaz Álvarez

Copyright © 2013 Gláucia Cecília Gabrielli dos Santos et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This soil acidification may increase the bioavailability of copper (Cu) and zinc (Zn) in soils. The objective of this study was to verify the concentrations of Cu and Zn in soils of a vineyard region, including sample acidification, to simulate acid rain. The study was developed in an area of vineyard cultivation, with an adjacent land having other crops grown, in the state of São Paulo, Brazil. Soil samples were collected and GPS located under different uses and coverings. The extracted solutions used to determine the available Cu and Zn forms were diethylenetriaminepentaacetic acid (DTPA), pH 7.3, and calcium chloride 0.01 M. The total forms were obtained by HNO3 digestion. The amounts of Cu and Zn extracted using DTPA were considered high in most of the samples and were greater in the areas cultivated with vineyards that had received fungicide applications for several decades. The total forms were higher in vineyard soils. The amounts of Cu and Zn extracted using CaCl2 did not have good correlation with vineyards or with other metals' forms. The results confirmed that the soil was enriched with Cu and Zn due to the management of the vineyards with chemicals for several decades.