Iron 150 Availability
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Eficiência agronômica de fertilizantes fosfatados em solos com diferentes capacidades de adsorção de fósforo e teores de matéria orgânica / Agronomic efficiency of phosphate fertilizers in soils with different capacity of phosphate adsorption and organic matter levels
Tropical soils highly intemperized show increased capability on phosphorus (P) adsorption. Several factors may influence P adsorption in such soils, but special attention must be paid on the organic matter level. Mechanisms involved in this process are related to the release of organic acids derived from the decomposition of the organic matter, which may eit
Publicado em: 2010
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2. BIOCHEMICAL AND PHYSIOLOGICAL EVALUATION OF POTATO CLONES IN RELATION TO ALUMINUM / AVALIAÇÃO BIOQUÍMICA-FISIOLÓGICA DE CLONES DE BATATA EM RELAÇÃO AO ALUMÍNIO
Aluminum (Al) is the most abundant metal in the earths crust, affecting thegrowth and development of plants. The objective of this work was to investigate and compare biochemical and physiological responses of potato clones, Macaca, SMIC148-A, Dakota Rose and Solanum microdontum, exposed to 0, 50, 100, 150 and 200 mg Al L-1 in nutrient solution (pH 4.0). Aft
Publicado em: 2008
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3. Concentração de proteínas (fosvitina e lipovitelina) em gemas de ovos de galinhas (Gallus gallus) nos diferentes ciclos de postura e sua interferência na disponibilidade do ferro / Protein concentration (phosvitin and lipovitelin) in egg yolks of hens (Gallus gallus) in the different cycles of position and its interference in the availability of the iron
The egg is the product of efficient biological transformation made by the hens of position, with high nutricional quality for the human consumption. In the egg yolk of the egg it meets phosvitin called protein, the same one acts as hauled of the iron if binding it. The iron deficiency normally occurs due to the insufficient food consumption iron sources or l
Publicado em: 2007
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4. CITRIC ACID PLUS ENZYMATIC ACTIVATOR ADDITION AND LIMING IN THE FORMS OF PHOSPHORUS SOIL AVAILABILITY / ADIÇÃO DE ÁCIDO CÍTRICO MAIS ATIVADOR ENZIMÁTICO E CALAGEM NA DISPONIBILIDADE E MOVIMENTAÇÃO DE ÍONS nO SOLO
The increase of the weathering cause changes in some soil properties, turning it more electropositive and with greater capacity of adsorving ions such as phosphate. The different management systems to which the soil is submitted can increase or diminish the P fixation, depending on the transformation degree and interaction among the components added by the m
Publicado em: 2006
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5. CITRIC ACID PLUS ENZYMATIC ACTIVATOR ADDITION AND LIMING IN THE FORMS OF PHOSPHORUS SOIL AVAILABILITY / ADIÇÃO DE ÁCIDO CÍTRICO MAIS ATIVADOR ENZIMÁTICO E CALAGEM NA DISPONIBILIDADE E MOVIMENTAÇÃO DE ÍONS nO SOLO
The increase of the weathering cause changes in some soil properties, turning it more electropositive and with greater capacity of adsorving ions such as phosphate. The different management systems to which the soil is submitted can increase or diminish the P fixation, depending on the transformation degree and interaction among the components added by the m
Publicado em: 2006
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6. IRON DEFICIENCY IN GRÁPIA: EFFECTS OF THE PHOSPHORUS AND POTASSIUM FERTILIZATION / DEFICIÊNCIA DE FERRO EM GRÁPIA: EFEITO DA ADUBAÇÃO FOSFATADA E POTÁSSICA
Previous studies done with grápia (Apuleia leiocarpa (Vog.) Macbride) showed that the increase in the P fertilization induced visual symptoms of Fe-deficiency in the younger leaves. At cellular level, potassium may contribute to balance charges between the cytoplasm and apoplasm, hence allowing the uptake of iron by plant cells. The aim of this study was to
Publicado em: 2005
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7. 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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8. Influence of vegetation cover on nutrient cycling in soil solution at the area of Manaus AM. / Influência da cobertura vegetal na ciclagem de nutrientes via solução do solo na região de Manaus - AM.
The main objective of this study was to contribute for the sustainability of land use in the central Amazon, evaluating the influence of vegetation cover on nutrient concentrations in soil solution that is, on the amounts of cations, anions and dissolved organic carbon (DOC). Using a primary forest as reference, we compared these concentrations with those in
Publicado em: 2005
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9. The major iron-containing protein of Legionella pneumophila is an aconitase homologous with the human iron-responsive element-binding protein.
Legionella pneumophila has high iron requirements, and its intracellular growth in human monocytes is dependent on the availability of intracellular iron. To learn more about iron metabolism in L. pneumophila, we have undertaken an analysis of the iron proteins of the bacterium. We first developed an assay to identify proteins by 59Fe labelling and nondenatu