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All publications of “Milton César Costa Campos”

Pedogenesis in an Archaeological Dark Earth – Mulatto Earth Catena over Volcanic Rocks in Western Amazonia, Brazil

Luís Antônio Coutrim dos Santos, Jane Kelly Silva Araujo, Valdomiro Severino de Souza Júnior, Milton César Costa Campos, Marcelo Metri Corrêa, Regilene Angélica da Silva Souza

31/Jul/2018

ABSTRACT Archaeological Dark Earth (ADE) pedogenesis and pre-Columbian history are fundamental for understanding the biodiversity and pedodiversity of the Neotropical rainforest in the Amazon region. This study aimed to evaluate the morphological, physical, chemical, and mineralogical properties as well as NaOH-extractable organic matter [OM(NaOH)] in ADE and Mulatto Earth (ME) overlying volcanic rocks along a toposequence (four soil profiles) in western Amazonia, Brazil. The soil profiles show anthropic A horizons over an argic horizon (Bt) in the ADE (Humic, Pretic […]

Spatial Variability of Soil Properties in Archeological Dark Earth Sites under Cacao Cultivation

Douglas Marcelo Pinheiro da Silva, Milton César Costa Campos, Uilson Franciscon, Leandro Coutinho Alho, Luis Antônio Coutrim dos Santos, Pérsio de Paula, [...]

01/Aug/2016

ABSTRACT Soils with an A horizon formed by human activity, an anthropogenic A horizon, are found in the Amazon Region. Few studies have examined the spatial distribution of the properties of these soils. We mapped the spatial variability of some soil properties in an area of Archaeological Dark Earth (ADE) in the Brazilian Amazon. A sampling grid was defined over an area of 42 × 88 m under cacao cultivation in which sampling points were established at a spacing of […]

Spatial Variability and Sampling Density of Magnetic Susceptibility and Soil Properties in Ultisols of the Manicoré Region, AM, Brazil

Ivanildo Amorim de Oliveira, José Marques, Milton César Costa Campos, Renato Eleotério de Aquino, Ludmila de Freitas, Diego Silva Siqueira e, [...]

01/May/2015

The difficulty in finding recent information on the spatial behavior of properties of soils in the Brazilian Amazon region has been a concern of many researchers. Due to the great difficulty and costs in assessing soil properties, alternative methods have been used for prediction, such as magnetic susceptibility. Thus, the objective of this study was to evaluate the spatial variability of magnetic susceptibility and of physical and chemical soil properties in an Argissolo Vermelho (Ultisol) from native forest, Archaeological Black […]

Spatial Variability and Sampling Density of Magnetic Susceptibility and Soil Properties in Ultisols of the Manicoré Region, AM, Brazil

Ivanildo Amorim de Oliveira, José Marques, Milton César Costa Campos, Renato Eleotério de Aquino, Ludmila de Freitas, Diego Silva Siqueira e, [...]

01/May/2015

The difficulty in finding recent information on the spatial behavior of properties of soils in the Brazilian Amazon region has been a concern of many researchers. Due to the great difficulty and costs in assessing soil properties, alternative methods have been used for prediction, such as magnetic susceptibility. Thus, the objective of this study was to evaluate the spatial variability of magnetic susceptibility and of physical and chemical soil properties in an Argissolo Vermelho (Ultisol) from native forest, Archaeological Black […]

Spatial Variability and Sampling Density of Magnetic Susceptibility and Soil Properties in Ultisols of the Manicoré Region, AM, Brazil

Ivanildo Amorim de Oliveira, José Marques, Milton César Costa Campos, Renato Eleotério de Aquino, Ludmila de Freitas, Diego Silva Siqueira e, [...]

01/May/2015

The difficulty in finding recent information on the spatial behavior of properties of soils in the Brazilian Amazon region has been a concern of many researchers. Due to the great difficulty and costs in assessing soil properties, alternative methods have been used for prediction, such as magnetic susceptibility. Thus, the objective of this study was to evaluate the spatial variability of magnetic susceptibility and of physical and chemical soil properties in an Argissolo Vermelho (Ultisol) from native forest, Archaeological Black […]

SOIL STRUCTURE UNDER IRRIGATED BEANS AND DIFFERENT SOIL MANAGEMENT PRACTICES

Lorena Adriana de Gennaro, Zigomar Menezes de Souza, Laura Fernanda Simões da Silva, Miguel Cooper, Milton César Costa Campos

01/Mar/2015

Agricultural management affects soil structure, modifying soil physical properties and soil water movement. The objective of this study was to evaluate the effects of no-tillage (NT) and conventional tillage (CT) on soil structure through physical properties and pore distribution in 2-D digital images. The study was conducted in an Oxisol with a randomized block design. Soil bulk density, soil macroporosity, mean weighted diameter (MWD), saturated hydraulic conductivity (SHC), and analysis of 2-D digital images (156.25 μm2 resolution) were evaluated at […]

USE OF SCALED SEMIVARIOGRAMS IN THE PLANNING SAMPLE OF SOIL PHYSICAL PROPERTIES IN SOUTHERN AMAZONAS, BRAZIL

Renato Eleotério de Aquino, Milton César Costa Campos, José Marques Junior, Ivanildo Amorim de Oliveira, Daniel De Bortoli Teixeira, José Maurício da Cunha

01/Jan/2015

There is a great lack of information from soil surveys in the southern part of the State of Amazonas, Brazil. The use of tools such as geostatistics may improve environmental planning, use and management. In this study, we aimed to use scaled semivariograms in sample design of soil physical properties of some environments in Amazonas. We selected five areas located in the south of the state of Amazonas, Brazil, with varied soil uses, such as forest, archaeological dark earth (ADE), […]

USE OF SCALED SEMIVARIOGRAMS IN THE PLANNING SAMPLE OF SOIL CHEMICAL PROPERTIES IN SOUTHERN AMAZONAS, BRAZIL

Ivanildo Amorim de Oliveira, Milton César Costa Campos, José Marques Junior, Renato Eleotério de Aquino, Daniel de Bortoli Teixeira, Douglas Marcelo Pinheiro da Silva

01/Jan/2015

The lack of information concerning the variability of soil properties has been a major concern of researchers in the Amazon region. Thus, the aim of this study was to evaluate the spatial variability of soil chemical properties and determine minimal sampling density to characterize the variability of these properties in five environments located in the south of the State of Amazonas, Brazil. The five environments were archaeological dark earth (ADE), forest, pasture land, agroforestry operation, and sugarcane crop. Regular 70 […]