Consulta: subjectFacets:"Soil chemical attributes"
Registros recuperados: 3
Data/hora: 09/06/2024 11:50:29

Chemical and biological attributes of a lowland soil affected by land leveling
Provedor de dados: 86
Autores: Parfitt,José Maria Barbat; Timm,Luís Carlos; Reichardt,Klaus; Pinto,Luiz Fernando Spinelli; Pauletto,Eloy Antonio; Castilhos,Danilo Dufech.
The objective of this work was to evaluate the relationship between soil chemical and biological attributes and the magnitude of cuts and fills after the land leveling process of a lowland soil. Soil samples were collected from the 0 - 0.20 m layer, before and after leveling, on a 100 point grid established in the experimental area, to evaluate chemical attributes and soil microbial biomass carbon (MBC). Leveling operations altered the magnitude of soil chemical and biological attributes. Values of Ca, Mg, S, cation exchange capacity, Mn, P, Zn, and soil organic matter (SOM) decreased in the soil profile, whereas Al, K, and MBC increased after leveling. Land leveling decreased in 20% SOM average content in the 0 - 0.20 m layer. The great majority of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flooded rice; Soil biological attributes; Soil chemical attributes; Soil management; Soil movement.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013001100010

Yield and mineral nutrition of soybean, maize, and Congo signal grass as affected by limestone and slag
Provedor de dados: 86
Autores: Castro,Gustavo Spadotti Amaral; Crusciol,Carlos Alexandre Costa.
The objective of this work was to evaluate the efficiency of superficial application of limestone and slag, and their effects on soil chemical attributes and on yield and mineral nutrition of soybean, maize, and Congo signal grass (Urochloa ruziziensis). The experiment was carried out in a Rhodic Hapludox under no tillage system. The treatments consisted of the use of limestone or slag (silicates of calcium and magnesium) to correct soil acidity, and of a control treatment without the use of soil correctives. Rates were calculated in order to raise soil base saturation up to 70%. Soybean was sown in November 2006 and maize in December 2007. Congo signal grass was sown right after the harvests of soybean and maize, and it was cropped during the off-seasons....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: No tillage; Silicon; Soil chemical attributes; Superficial liming; Subsuperficial acidity; Yield components.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013000600013

SOIL-PLANT NUTRIENT INTERACTIONS IN TWO MANGROVE AREAS AT SOUTHERN BRAZIL
Provedor de dados: 37
Autores: LANG MARTINS MADI,Ana Paula; TORRES BOEGER,Maria Regina; REISSMANN,Carlos Bruno; GERONAZZO MARTINS,Kelly.
Mangrove forests have a simple architecture. They shelter a few number of arboreal species that grow in a saline environment subject to tidal activity. The research objective was to evaluate possible interactions between physical-chemical soil attributes and plant-leaf nutrient concentrations of different mangrove species. Different mangrove species growing in the same soil, and the same mangrove species growing in two different soil classes were evaluated as to their leaf nutrient concentration patterns. The study was carried out in mangrove areas of the State of Paraná, southern Brazil, in two distinct soil classes: HISTOSOL THIOMORPHIC Salic sodic and GLEYSOL THIOMORPHIC Salic sodic; and three different species: Avicennia schaueriana, Laguncularia...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avicennia schaueriana; Laguncularia racemosa; Mangrove; Soil; Plant nutrients; Rhizophora mangle; Soil chemical attributes.
Ano: 2016
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2016000100004