Typic Haplustox
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Chemical-Mineralogical Characterization of Magnetic Materials from Magnetic Soils of the Southern Espinhaço Mountain Chain and of the Upper Jequitinhonha Valley, State of Minas Gerais, Brazil
ABSTRACT In the Southern Espinhaço Mountain Chain and in the Upper Jequitinhonha Valley, magnetic soils, in different pedogenetic stages, are found to be forming over intrusions of basic lithology. The essential chemical and mineralogical properties of samples from magnetic soil profiles from those two physiographic environments in the state of Minas Gerais
Rev. Bras. Ciênc. Solo. Publicado em: 27/03/2017
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2. Carbon Stocks in Compartments of Soil Organic Matter 31 Years after Substitution of Native Cerrado Vegetation by Agroecosystems
ABSTRACT Changes in carbon stocks in different compartments of soil organic matter of a clayey Latossolo Vermelho Distrófico (Typic Haplustox), caused by the substitution of native savanna vegetation (cerrado sensu stricto) by agroecosystems, were assessed after 31 years of cultivation. Under native vegetation, a stock of 164.5 Mg ha-1 C was estimated in th
Rev. Bras. Ciênc. Solo. Publicado em: 29/04/2016
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3. Carbonate-silicate ratio for soil correction and influence on nutrition, biomass production and quality of palisade grass
Silicates can be used as soil correctives, with the advantage of being a source of silicon, a beneficial element to the grasses. However, high concentrations of silicon in the plant would affect the digestibility of the forage. To evaluate the influence of the substitution of the calcium carbonate by calcium silicate on the nutrition, biomass production and
Scientia Agricola. Publicado em: 2011-10
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4. Imazaquin sorption in surface and subsurface soil samples.
The objective of this work was to study the sorption and desorption of imazaquin, in surface and subsurface soil samples from Brazil. Sorption and desorption steps were carried out using batch equilibration and high performance liquid chromatography analytical routines. The value of Kf,ads was positively correlated with clay content, and negatively correlate
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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5. Quinoa (Chenopodium quinoa) reaction to herbicide residue in a Brazilian Savannah soil.
The quinoa (Chenopodium quinoa Willd.) cultivation, one of the most promising in double cropping with soybeans or maize, depends on weed control. The objective of this work was to evaluate quinoa reaction to herbicide residue in a savannah soil. Six herbicide treatments, trifluralin, pendimethalin, clomazone, imazaquin, trifluralin + imazaquin and control, w
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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6. Attributes of biome savannah soil under differents uses and management / Atributos de solo do bioma cerrado sob diferentes usos e manejo
This work aimed to assess physical and chemical attributes (texture, porosity, mean particle density, dry bulk density, flocculation degree, aggregation, hydraulic conductivity and penetration resistance, pH-CaCl2, calcium, magnesium, potassium, phosphorus and base saturation) along the transections of two cerrado (savannah) soils. Additionally, efficiency o
Publicado em: 2009
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7. Variabilidad espacial de atributos físicos de un Typic Haplustox de los Llanos Orientales de Colômbia
O objetivo deste trabalho foi estudar o comportamento da variabilidade espacial da resistência mecânica à penetração (RP), da densidade do solo, da densidade de partículas do solo, da porosidade total e dos teores de areia, silte e argila, e as relações existentes entre as propriedades analisadas. O estudo foi desenvolvido em Puerto López (Meta-Col�
Engenharia Agrícola. Publicado em: 2008-03
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8. Efeito do superfosfato triplo (32P) na absorção do fósforo do fosfato natural pelas plantas de milho e soja / Effect of triple superphosphate (32P) on phosphate rock phosphorus uptake by maize and soybean plants
The efficiency of phosphate rock (PR) can be improved applying it together with watersoluble P fertilizer. Four experiments were carried out in the greenhouse of the Soil Fertility Laboratory, CENA/USP (Centro de Energia Nuclear na Agricultura - Universidade de São Paulo), with maize (Zea mays L.) and soybean [Glycine max (L.) Merr.] grown in a dystrophic T
Publicado em: 2007
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9. Relação solo-água-vegetação em uma toposseqüência localizada na Estação Ecológica de Assis, SP / Soil-water-vegetation relationships in a toposequence located in the Ecological Station of Assis, São Paulo, Brazil
The Cerrado bioma is being fragmented due to the human and agricultural occupation. To maintain the biodiversity, ecological corridors must be created by the revegetation and the restoration of the degraded areas. It can only be ameliorated upon the knowledge of the soils natural dynamics and distribution. The aim of this work was to characterize the b
Publicado em: 2006
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10. Silício e fósforo para estabelecimento do capim-Marandu num Latossolo Vermelho-Amarelo. / Silicon and phosphorus for Marandu grass establishment to a Typic Haplustox.
One of the biggest problems for pasture establishment and maintenance in Brazilian soils is in the extremely low availability of phosphorus. Adding to this is the high soil adsorption capacity of this nutrient, as a consequence of high soil acidity and its high iron and aluminum concentrations. Silicate application can change phosphorus availability in the s
Publicado em: 2005
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11. Liming and aluminum forms in three places under no-tillage system. / Calagem e formas de alumínio em três localidades sob sistema de plantio direto.
Several agricultural areas under no-tillage system (NT) in Brazil present soils with low pH values and higher aluminum content. In spite of the apparently unfavorable condition to agriculture of such areas, high yields and lack of responses of crops to lime application have been observed, probably, because of aluminum chemistry in soils under no-tillage. Org
Publicado em: 2004
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12. Boron fertilization in pêra rio sweet orange affected by citrus variegated chlorosis. / Adubação boratada em pomar de laranja Pêra Rio afetado pela clorose variegada dos citros.
Citrus crop is extremely dependent on an adequate mineral nutrition to reach bigger levels of production to fewer costs, especially under adverse conditions, as in the case of occurrence of citrus variegated chlorosis (CVC). In this context, boron directly influences the production because it provides a bigger root growth, what increases the volume of the ex
Publicado em: 2003