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All publications of “Marco Aurelio Carbone Carneiro”

7 results

Biochemical and Biological Properties of Soil from Murundus Wetlands Converted into Agricultural Systems

Luciene Nunes Barcelos Martins, Flávia Louzeiro de Aguiar Santiago, Marcela Susana Montecchia, Olga Susana Correa, Orivaldo José Saggin Junior, Edicarlos Damacena de Souza, [...]

14/Jun/2019

ABSTRACT The implementation of conservationist systems that improve soil properties and reduce the impacts of the conversion of native areas is fundamental for feasible agricultural exploitation. This study aimed to evaluate the impact on soil biological properties caused by the conversion of murundus fields into agricultural systems and verify the ability of the no-tillage conservation system to recover these properties over the years. Treatments consisted of three agricultural areas subjected to the same management (no-tillage), in a chronosequence (7, 11, […]

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Arbuscular mycorrhizal fungi in “murundu fields” after conversion to farm systems in the cerrado

Paula Camylla Ramos Assis, Orivaldo José Saggin Júnior, Helder Barbosa Paulino, Sidney Luiz Stürmer, José Oswaldo Siqueira, Marco Aurélio Carbone Carneiro

01/Dec/2014

The murundu fields (Campos de Murundus) are characterized by mounds occurring in some parts of the Cerrado (Brazilian tropical savanna) biome with important ecological functions for the maintenance of soil sustainability. Conversion to agricultural systems may lead to changes in physical, chemical, and biological soil properties not yet assessed, such as reduction in the biodiversity of arbuscular mycorrhizal fungi. The aim of this study was to evaluate how the conversion of mound fields into agricultural areas changes the community of […]

Arbuscular mycorrhizal fungi in an oxisol under managements and uses in cerrado

Dorotéia Alves Ferreira, Marco Aurélio Carbone Carneiro, Orivaldo José Saggin Junior

01/Feb/2012

The alterations in the communities of arbuscular mycorrhizal fungi (AMF) induced by changes in land use and different agricultural uses are still insufficiently studied, particularly in the Cerrado biome. This study evaluated how human interference by management and land use change affect the AMF density and diversity in a Cerrado Oxisol. The study evaluated five areas: Riparian Forest (MC), Riparian Forest Edge (BM), Pasture (Past), no-till monoculture (PD) and Riparian Deforested Area (AD). In each area, 20 plots of 250 […]

Labile and stable fractions of soil organic matter under management systems and native cerrado

Cícero Célio de Figueiredo, Dimas Vital Siqueira Resck, Marco Aurélio Carbone Carneiro

01/Jun/2010

Soil organic matter can be analyzed on the basis of the different fractions. Changes in the levels of organic matter, caused by land use, can be better understood by alterations in the different compartments. The aim of this study was to evaluate the effect of different management systems on the labile and stable organic matter of a dystrophic Red Latosol (Oxisol). The following properties were determined: total organic C and total N (TOC and TN), particulate organic C and particulate […]

Ammonia volatilization of urea in the out-of-season corn

Hamilton Seron Pereira, Anabelisa Ferreira Leão, Adriana Verginassi, Marco Aurélio Carbone Carneiro

01/Dec/2009

The aim of this study was to evaluate the N losses due to volatilization at different rates of common urea, polymer coated urea and urease inhibitor-treated urea in the out-of-season corn, using semi-open static collectors. The treatments consisted of N levels on side-dressing fertilization with urea in different treatments: (a) control (without N), (b) urea 40 kg ha-1 N, (c) urea 80 kg ha-1 N, (d) polymer coated urea 40 kg ha-1 N, (e) polymer coated urea 80 kg ha-1 […]

Physical, chemical and biological properties of cerrado soil under different land use and tillage systems

Marco Aurélio Carbone Carneiro, Edicarlos Damacena de Souza, Edésio Fialho dos Reis, Hamilton Seron Pereira, Watson Rogério de Azevedo

01/Feb/2009

As knowledge on no-till system expands, it has become quite clear that separate chemical indicators cannot provide a detailed soil characterization. The objective of this study was to evaluate the effects of tillage systems and soil use in the physical, chemical and biological properties of a clayey dystrophic Red Latosol – Oxisol and a sandy Neosol – Entisol. The treatments for the Oxisol consisted of: native savanna, pasture, conventional tillage, no-tillage with turnip and with forage sorghum as cover crop. […]

Soil organic carbon, total nitrogen, microbial biomass and activity in two rehabilitation chronosequences after bauxite mining

Marco Aurélio Carbone Carneiro, José Oswaldo Siqueira, Fátima Maria de Souza Moreira, André Luis Lima Soares

01/Apr/2008

Mining is a human activity with a harsh impact on ecosystems. The degradation degree depends on the intensity of soil impact, exploited soil volume and amount of mine spoil. Soil microbial activities are responsible for key functions in ecosystems and can indicate the degree of rehabilitation of mined areas. The purpose of this study was to evaluate the impact of bauxite mining in two chronosequences with different rehabilitation strategies (revegetation) on the following soil attributes: organic carbon (C org), total nitrogen […]