Soil microbiological, and chemical indicators in pastures
DOI:
https://doi.org/10.5433/1679-0359.2013v34n1p137Keywords:
Microbial biomass carbon, Soil fertility, Soil quality.Abstract
The chemical, physical and biological indicators have been frequently used to indicate changes in soil quality. Thus, the objective of this study was to assess the current state of soils under pastures in the western region of São Paulo using the evaluation and correlation of different microbiological and soil fertility variables. Thirteen quantitative variables were evaluated in 108 soil samples collected in pastures established more than two years. The microbial biomass carbon had the lowest coefficient of variation, while t the pH had the lowest coefficient of variation and soluble phosphorus showed the highest variability, within the chemical variables in the soils. In soils under pastures, evaluated in this study, acid soils and low phosphorus and potassium were predominant. The principal component analysis showed a great dependence between different variables. The clay had low variability, showing significant correlation (p < 0.01) with the CEC and total soil carbon. Microbial biomass was correlated positively with most of the variables of fertility and microbiology, which can then be considered a good biological indicator for these soils.
Downloads
Downloads
Published
How to Cite
Issue
Section
License
Semina: Ciências Agrárias adopts the CC-BY-NC license for its publications, the copyright being held by the author, in cases of republication we recommend that authors indicate first publication in this journal.
This license allows you to copy and redistribute the material in any medium or format, remix, transform and develop the material, as long as it is not for commercial purposes. And due credit must be given to the creator.
The opinions expressed by the authors of the articles are their sole responsibility.
The magazine reserves the right to make normative, orthographic and grammatical changes to the originals in order to maintain the cultured standard of the language and the credibility of the vehicle. However, it will respect the writing style of the authors. Changes, corrections or suggestions of a conceptual nature will be sent to the authors when necessary.
