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Alterations of chemical, physical and microbiological attributes of a Brazilian Savanna Oxisol under different uses

Grant number: 12/08547-6
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): August 01, 2012
Effective date (End): July 31, 2013
Field of knowledge:Agronomical Sciences - Agronomy - Soil Science
Principal Investigator:Marcio Roberto Soares
Grantee:Marina Justi
Home Institution: Centro de Ciências Agrárias (CCA). Universidade Federal de São Carlos (UFSCAR). Araras , SP, Brazil

Abstract

The Cerrado, or Brazilian savanna, considered one than more diversity area of the world, suffered late urban and agriculture settlement when compared with other biomes like Atlantic Forest. Was also denied as a secondary ecosystem and not received attention by research for several years. Currently, this ecosystem suffers occupation accelerated due to technological advances in agriculture. Thus, information on soil characteristics and plant communities of different ecosystems that compose it are essential to contribute to the understanding of its dynamics. This makes it possible the scientific characterization of this biome, get more consistent basis for techniques to restore degraded areas and to evaluate the impact of systems management and their influence on the soils of this biome. The objective of this project is the assessment of the chemical, physical and microbiological aspects of a fragment of Cerrado in State São Paulo. For this, in the campus of the Federal University of São Carlos, three areas will be selected: Cerrado sensu stricto, anthropic Cerrado and pasture. It will collected 15 samples in each area, composed of five subsamples for chemical (pH, organic matter, P, Ca, Mg, K, Al, (H + Al), cation exchange capacity, sum of bases, base and aluminum saturation), physical (particle size, density and porosity) and microbiological characterization (microbial biomass and respiration). The areas will be compared as to their soil attributes through analysis of variance (ANOVA) and Tukey's test (p=0,05).