Consulta: creatorFacets:"Dias,Adriana Cristina"
Registros recuperados: 5
Data/hora: 01/06/2024 18:03:08

Compactação causada pelo manejo de plantas invasoras em latossolo vermelho-amarelo cultivado com cafeeiros
Provedor de dados: 90
Autores: Pais,Paula Sant'Anna Moreira; Dias Junior,Moacir de Souza; Santos,Gislene Aparecida dos; Dias,Adriana Cristina; Guimarães,Paulo Tácito Gontijo; Alcântara,Elifas Nunes de.
O manejo de plantas invasoras é considerado uma das principais atividades que promovem degradação da estrutura do solo em lavouras cafeeiras, devido à compactação do solo causada pelas operações de controle de plantas invasoras. O objetivo deste estudo foi determinar o modelo de capacidade de suporte de carga para o manejo de plantas invasoras sem capina, bem como, utilizando esse modelo, qual manejo de plantas invasoras causa menor ou maior compactação do solo. Este estudo foi realizado em um Latossolo Vermelho-Amarelo (LVA) cultivado com cafeeiros da cutivar Topázio MG 1190 desde 2006, localizado na Fazenda Experimental da EPAMIG, na comunidade Farias, em Lavras-MG. Os manejos de plantas invasoras avaliados foram: na linha de tráfego da entrelinha -...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sustentabilidade; Pressão de pré-consolidação; Modelagem da capacidade de suporte de carga; Coffea arabica L.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000600011

Mineralogical, chemical and electrochemical attributes of soils
Provedor de dados: 63
Autores: Almeida,Cecília Calhau; Fontes,Maurício Paulo Ferreira; Dias,Adriana Cristina; Pereira,Thiago Torres Costa; Ker,João Carlos.
ABSTRACT: A set of attributes endows the soils with distinctive characteristics and astute understanding is required in order to formulate suitable strategies for soil management. The aim of this study was to physically, chemically and mineralogically characterize samples of the main soil classes in Minas Gerais, Brazil, determine the point of zero salt effect (PZSE) and the point of zero charge (PZC), and ascertain the correlation between these factors and soil attributes. The soils evaluated presented different textural classes ranging from loamy sand (Entisol) to very clayey (some Oxisols and Ultisols). The soils differed substantially in terms of fertility, presenting a range from dystrophic (low fertility, base saturation &lt; 50 %) to eutrophic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil attributes; Weathered soils; Secondary minerals; Mineralogical composition; Point of zero charge.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000601402

Adsorption and desorption of arsenic and its immobilization in soils
Provedor de dados: 63
Autores: Almeida,Cecília Calhau; Fontes,Maurício Paulo Ferreira; Dias,Adriana Cristina; Pereira,Thiago Torres Costa; Ker,João Carlos.
ABSTRACT: Arsenic (As) is a naturally occurring chemical element considered toxic and carcinogenic by health and environmental protection agencies. Studies of As adsorption/desorption behavior in soils are important to predictions of As’ potential mobility in natural systems. The aim of this study was to assess the adsorption of As(V) in soils from Minas Gerais, Brazil, and determine its immobilization rate in order to identify soils with characteristics more favorable to its deployment as an As geochemical barrier. The adsorption experiment was performed using different As concentrations and the data pertaining to the maximum adsorption capacity of As(V) (MACAs) were determined by Langmuir and Freundlich isoterms. The Oxisols, due to their more oxidic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Toxic contaminant; Maximum adsorption capacity; Mineralogy of soils; Texture; Geochemical barrier.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000301401

Load-bearing capacity of a red-yellow latosol cultivated with coffee plants subjected to different weed managements
Provedor de dados: 64
Autores: Pais,Paula Sant'Anna Moreira; Dias Junior,Moacir de Souza; Dias,Adriana Cristina; Iori,Piero; Guimarães,Paulo Tácito Gontijo; Santos,Gislene Aparecida dos.
It is essential to know the levels of pressure applied to the soil by different weed managements to adapt the management of coffee plantations in a sustainable manner. The objectives of this study were: a) to generate load-bearing capacity models of a Red-Yellow Latosol (Oxisol) submitted to different weed managements and b) to determine which weed management resulted in higher compression. The study was conducted at the Experimental Farm of EPAMIG, located near the community Farias, in Lavras-MG (latitude 21° 14' 43" S and longitude 44° 59' 59" W and altitude of 919 m). The soil is a Red-Yellow Latosol (LVA) cultivated with coffee plantation using Topazio MG 1190 coffee variety, since 2006. We evaluated five weed managements, three being through...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffee culture; Soil compaction; Sustainability; Preconsolidation stress; Soil structure.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542013000200005

Soil cover plants on water erosion control in the South of Minas Gerais
Provedor de dados: 64
Autores: Dias,Adriana Cristina; Silva,Marx Leandro Naves; Freitas,Diego Antonio França de; Batista,Pedro Velloso Gomes; Curi,Nilton; Carvalho,Gabriel José de.
Water erosion is responsible for soil, water, carbon and nutrient losses, turning into the most important type of degradation of Brazilian soils. This study aimed to evaluate the influence of three cover plants under two tillage systems on water erosion control in an Argisol at south of Minas Gerais state, Brazil. The cover plants utilized in the study were pigeon pea, jack bean and millet, under contour seeding and downslope tillage. Experimental plots of 4 x 12 m, with 9% slope, under natural rainfall were used for the quantification of losses of soil, water, nutrients, and organic matter. One experimental plot was kept without plant cover (reference). Higher erosivity was observed in December and January, although a great quantity of erosive rainfall...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil conservation; Tillage systems; Vegetal cover; Erosivity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542013000500004