Soil biological attributes in monoculture and integrated systems in the cerrado region of Piauí State, Brazil
Acta Scientiarum - Agronomy, ISSN: 1807-8621, Vol: 43
2021
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Article Description
The implementation of integrated agricultural production systems is considered a promising strategy for sustainable agricultural intensification in Brazil. This study aimed to evaluate the effects of different monoculture and integrated production systems on the microbiological attributes and organic carbon of soil from the Cerrado region in Piauí, Brazil. Soil samples were collected from the 0.0-0.10-m layer in the following systems: no-tillage (PD), pasture (PAS), exclusive eucalyptus cultivation (CEE), integrated livestock-forest system (IPF) and a native Cerrado (CN) area, which was used as reference. Total organic carbon (TOC) and nitrogen (NT) contents, microbial biomass carbon (CMIC), microbial respiration (MR), microbial quotient (qMIC), metabolic quotient (qCO2), as well as the activities of the hydrolysis of fluorescein diacetate (FDA), acid phosphatase, β-glucosidase and urease enzymes were evaluated. High TOC contents were found in the CEE, IPF and PAS systems, and high CMIC and qMIC values were found in the CN and CEE systems. The variables MR, qCO2 and enzymatic activity varied as a function of the management systems. The IPF and CEE systems caused improvements in the soil attributes, with increases in organic carbon and microbial biomass. The IPF integrated production system promoted improvements in the microbiological indicators of soil quality and was considered an environmentally sustainable agricultural production system. The transition from CN to agricultural areas caused changes in the soil microbiological indicators, which were perceived several years after anthropogenic intervention, indicating that even with the adoption of conservation systems, it was not possible to reestablish the soil microbial biomass.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85113820566&origin=inward; http://dx.doi.org/10.4025/actasciagron.v43i1.51814; https://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/51814; https://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/download/51814/751375152379; http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1807-86212021000106002&lng=en&tlng=en; http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1807-86212021000106002&lng=en&tlng=en; http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1807-86212021000106002; http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1807-86212021000106002
Universidade Estadual de Maringa
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