Phosphorus Mineralization
Mostrando 13-24 de 39 artigos, teses e dissertações.
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13. Bioavailability and poultry fecal excretion of phosphorus from soybean-based diets supplemented with phytase
Five hundred and four 1-day-old Cobb broiler chickens were randomly allotted to 18 treatments and fed a semi-purified basal diet (4 g/kg total phosphorus) supplemented with 2 levels of supplemental P (0.5 or 1 g/kg) during 21 days to evaluate performance and bone mineralization; to assess the relative bioavailability of P (RBP) in wheat meal (WM) and roasted
R. Bras. Zootec.. Publicado em: 2013-03
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14. DISPONIBILIDADE E TRANSFERÊNCIA DE NITROGÊNIO, FÓSFORO E POTÁSSIO EM UM ARGISSOLO SUBMETIDO À APLICAÇÃO DE FONTES DE NUTRIENTES / AVAILABILITY AND TRANSFER OF NITROGEN, PHOSPHORUS AND POTASSIUM IN SANDY TYPIC HAPLUDALF SOIL SUBMITTED TO THE APPLICATION OF SOURCES OF NUTRIENTS
The swine and cattle activities are of great economic and social importance in Brazil in the southern region, but generate of large volumes of waste, that when applied to the soil can be mineralized and part of the nutrients released can be absorbed by plants or transferred by runoff or percolation. The aimed of this study was to evaluate the rate of mineral
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/02/2012
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15. Phosphate solubilizing microorganisms associated with the rhizosphere of maize grown in Brazilian "cerrado" under conventional tillage and no-tillage management.
2006
CONGRESSO NACIONAL DE MILHO E SORGO. Publicado em: 2011
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16. Microrganismos e disponibilidade de fósforo (P) nos solos: uma análise crítica.
ABSTRACT: Cerrado soils are extremely old, highly weathered and depleted in essential nutrients, especially P. For this reason, the addition of P fertilizers is mandatory in order to obtain economical yields of annual crops. Soil microorganisms play a key role in the P cycle. The P immobilized in the soil microbial biomass acts as reservoir of this element.
Planaltina. Publicado em: 2011
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17. Phosphorus analysis in soil under herbaceous perennial leguminous cover by nuclear magnetic spectroscopy.
The availability and the reserves of organic phosphorus are controlled by its mineralization rate and are also influenced by changes in soil management. The objective of this study was to evaluate the influence of soil covering with different leguminous plant on soil organic P by 31P-NMR spectroscopy. Alkaline soil extracts were obtained from two depths (0-5
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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18. Disponibilidade de nutrientes no solo, qualidade de grãos e produtividade da soja em solo adubado com lodo de esgoto.
O objetivo deste trabalho foi verificar o efeito direto e residual da adubação com lodo de esgoto, como fonte de P, na produtividade da soja, na qualidade dos grãos para consumo humano e no potencial de lixiviação do nitrato. O experimento foi realizado no campo e constituiu-se dos seguintes tratamentos: ausência de adubação química e de lodo; aduba
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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19. Desempenho, balanço metabólico, digestibilidade de minerais e mineralização óssea por frangos de corte alimentados com rações contendo diferentes níveis de cálcio e suplementadas com fitase / Performance, metabolic balance, minerals digestibility and bone mineralization of broiler chickens fed diets with different calcium levels and supplemented with phytase
Um experimento foi conduzido no Setor de Avicultura do Departamento de Nutrição e Produção Animal da Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo para avaliar o efeito de rações contendo diferentes níveis de cálcio e suplementadas com fitase sobre o desempenho, a digestibilidade e a excreção de nutrientes pelas aves,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/12/2009
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20. Adubação fosfatada no plantio da cana-de-açúcar a partir de torta de filtro enriquecida com fosfato solúvel / Fertilization in the planting of sugarcane from the filter cake enriched with soluble phosphate
The phosphorus is considered an essential element for the plants and is in low amount in the Brazilian soils. The filter cake, mixture of sugarcane bagasse and sludge of decanter tanks, presents high organic matter, phosphorus and calcium content. The phosphorus existent in the filter cake is organic. The liberation of phosphorus and nitrogen happen gradual,
Publicado em: 2009
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21. Dinâmica do fósforo em latossolo do cerrado sob sistema de integração lavoura-pecuária
The integration of crop-livestock systems (ILP) is one of the alternatives to recover the fertility of soils under degraded pastures in the Cerrado region. This system has positive effects on soil fertility and quality, increasing organic carbon contents and soil biological activity, thus requiring a new characterization of soil fertility by identifying soil
Publicado em: 2008
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22. Caracterização, decomposição e biodisponibilidade de nitrogênio e fósforo de materiais orgânicos de origem animal e vegetal / Characterization, decomposition and mineralization of nitrogen and phosphorus of organic materials from animals and plants
This work presents results of a set of experiments carried out under laboratory, green house and field conditions regarding to the chemical and biochemical characterization of organic materials: raw animal manures, industrial residues, green manures and composts elaborated with coffee husk. With the objective to evaluated their decomposition, mineralization
Publicado em: 2006
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23. Levels of metabolizable energy and crude protein in rations formulated according to the concept of ideal protein and phytase for piglets of 15 to 35 kg / NÃveis de energia metabolizÃvel e de proteÃna bruta em raÃÃes formuladas segundo o conceito de proteÃna ideal e fitase para leitÃes dos 15 aos 35 kg
Two experiments were conducted in the Swine Production Sector of the Animal Science Department at UFLA to verify by using the metabolism, performance assay, blood parameters and comparative slaughter, the effects of different levels of metabolizable energy (ME) and crude protein (CP) in rations formulated according to the ideal protein concept and phytase fo
Publicado em: 2006
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24. Lignocellulose Mineralization by Arctic Lake Sediments in Response to Nutrient Manipulation
Mineralization of specifically labeled 14C-cellulose- and 14C-lignin-labeled lignocelluloses by Toolik Lake, Alaska, sediments was examined in response to manipulation of various environmental factors. Mineralization was measured by quantifying the amount of labeled CO2 released from the specifically labeled substrates. Nitrogen (NH4NO3) and, to a greater de