5 documents found, page 1 of 1
Variability and spatial correlation of aggregates and organic carbon in indian ...
Gomes, Romario Pimenta; Campos, Milton Cesar Costa; Brito, Wildson Benedito Mendes; Cunha, Jose Mauricio; Muniz, Aleksander WestphalHaving in mind the importance of knowing the variability and spatial correlation of soil properties in Indian Dark Earth (IDE), we evaluated in this study the variability and the spatial correlation of aggregates and carbon in an Ultisol under coffee cultivation in southern Amazonas. It was established a 48 x 88 m sampling grid spaced 06 x 08 m, totalling 88 sampling points. Then soil samples were collected at:...
Spatial variability of aggregates and organic carbon under three different uses...
Gomes, Romário Pimenta; Campos, Milton César Costa; Soares, Marcelo Dayron Rodrigues; Silva, Douglas Marcelo Pinheiro; Cunha, José MaurícioIndian Black Earths (IBEs) are distributed throughout the Amazon. They are characterized by their high chemical fertility and agricultural potential. IBEs have high organic carbon, favouring the improvement of soil structure. This work aimed to evaluate the aggregates and organic carbon (OC) spatial variability in different IBEs in southern Amazonas. We evaluated the organic carbon spatial variability, mean wei...
Chemical soil attributes evaluated by multivariate techniques and geostatistics...
Aquino, Renato Eleoterio de; Campos, Milton Cesar Costa; Soares, Marcelo Dayron Rodrigues; Oliveira, Ivanildo Amorim; Franciscon, UilsonStudies on the spatial behavior of soil attributes in the Amazon region are still very incipient. In this sense, the objective of this work was to evaluate the chemical attributes through multivariate techniques and geoestatistics in the area with agroforestry and sugarcane in Humaitá, AM, Brazil. The study was carried out in a farm in Humaitá city, Amazonas State. The studied area was divided into 70.00 m x 70...
Atributos físicos do solo em áreas sob diferentes sistemas de usos na região de...
Soares, Marcelo Dayron Rodrigues; CAMPOS, MILTON CESAR COSTA; Oliveira, Ivanildo Amorim; Cunha, Jose Mauricio; Santos, Luis Antonio CoutrinO conhecimento dos danos provocados pelos diferentes sistemas de manejo é essencial para melhorar a qualidade física do solo. Assim o objetivo deste trabalho foi avaliar os atributos físicos do solo em áreas sob diferentes sistemas de usos na região de Manicoré, AM. Foram delimitadas três áreas, com os seguintes usos do solo: área cultivada com milho, área cultivada com pastagem e área sob floresta nativa. Fora...
Spatial variability of physical attributes in Alfissol under agroforestry, Huma...
Campos, Milton Cesar Costa; Soares, Marcelo Dayron Rodrigues; Oliveira, Ivanildo Amorim; Santos, Luis Antonio Coutrim; Aquino, Renato EleoterioIn this research, we aimed to evaluate the spatial variability of soil properties in Alfissol under agroforestry in the Humaitá region, Amazonas state, Brazil. Mapping of an agroforestry growing area was performed in 70 × 70 m sampling grid design. In the mapped area, soil samples were collected at regular 10 m spacing at 0.0-0.1 m depth layer, totaling 64 sampling sites. The following physical analyses were ca...