Nitrogen Immobilization
Mostrando 1-12 de 27 artigos, teses e dissertações.
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1. Potassium chloride: impacts on soil microbial activity and nitrogen mineralization
RESUMO: O cloreto de potássio (KCl) é a fonte de potássio mais utilizada mundialmente e, devido ao uso contínuo desse fertilizante, pode ocorrer acúmulo de sais no solo e nas plantas. O excesso de íons desencadeia uma série de distúrbios fisiológicos, tornando-se um potencial biocida no solo. Objetivou-se avaliar o efeito da aplicação de doses de
Cienc. Rural. Publicado em: 18/04/2019
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2. Immobilization of ammonia-oxidizing bacteria by polyvinyl alcohol and sodium alginate
Abstract Ammonia-oxidizing bacteria were immobilized by polyvinyl alcohol (PVA) and sodium alginate. The immobilization conditions and ammonia oxidation ability of the immobilized bacteria were investigated. The following immobilization conditions were observed to be optimal: PVA, 12%; sodium alginate, 1.1%; calcium chloride, 1.0%; inoculum concentration, 1.
Braz. J. Microbiol.. Publicado em: 2017-07
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3. Production of Copper and Cobalt Aluminate Spinels and Their Application As Supports for Inulinase Immobilization
AbstractCopper and cobalt aluminates were obtained through the use of chitosan as template. In this synthesis route, chitosan is eliminated by heating, and a porous material is produced. These oxides were used as supports for inulinase immobilization by adsorption process. Physical properties of produced particles were analyzed by X-ray diffraction (XRD) and
Mat. Res.. Publicado em: 2015-10
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4. BIOSSENSOR ELETROQUÍMICO BASEADO NA ENZIMA TIROSINASE PARA A DETERMINAÇÃO DE FENOL EM EFLUENTES
AbstractThis work describes the development of a biosensor based on the tyrosinase enzyme (Tyr) for the determination of phenol (PHEN) in laboratory effluent samples derived from ammoniacal nitrogen analysis of the water samples from the Muquém dam in the city of Cariús, CE, using square-wave voltammetry (SWV). The electrode modification consisted of the i
Quím. Nova. Publicado em: 2015-08
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5. Nitrogen contributions of legume roots to cabbage nutrition
The effects of roots are generally not considered in studies assessing crop responses to green manure. However, measuring such effects can contribute to a better understanding of crop rotation. In two experiments, we evaluated the content of legume-N in crop tissue and the fertilizer value of the roots and shoots of two legume species. Roots, shoots, or whol
Sci. agric. (Piracicaba, Braz.). Publicado em: 2013-12
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6. Variações nos teores de nitrogênio mineral em solo suplementado com lodo de esgoto.
O conhecimento da dinâmica da mineralização de materiais orgânicos adicionados ao solo é importante para predizer os efeitos das possíveis perdas de N para o ambiente. O objetivo deste trabalho foi avaliar a variação do N mineral, no período da seca e das águas, em solo cultivado com milho, após incorporação de doses crescentes de lodo de esgoto
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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7. Mineralização de nitrogênio e biomassa microbiana em solos de mata de galeria: efeito do gradiente topográfico.
RESUMO: A disponibilidade de nitrogênio (N) inorgânico para as plantas, geralmente, depende da taxa de mineralização da matéria orgânica. A biomassa microbiana, além de indicadora da qualidade do solo, está relacionada à disponibilização de nutrientes. Este trabalho objetivou determinar as taxas de mineralização líquida de N e o carbono da biom
Planaltina. Publicado em: 2011
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8. Establishment of recommendations and parameters for use of urban waste compost in agriculture in the State of Sao Paulo - Brazil.
The organic matter present in urban waste (45 to 60% of total dry mass), after being stabilized in the form of compost, is recommended for application in agricultural soils, since it improves its physical and chemical properties and benefits the soil biological processes. Also, the urban waste compost has been economically viable for application in agricultu
INTERNATIONAL ORBIT CONFERENCE. Publicado em: 2011
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9. Imobilização de nitrogênio em solo cultivado com milho em sucessão à aveia preta nos sistemas plantio direto e convencional / Nitrogen immobilization in soil cropped with maize in sequence to black oats in conventional and in no-till systems
O presente trabalho teve como objetivos avaliar a quantidade de nitrogênio imobilizado e a sua remineralização, nos sistemas plantio direto (SPD) e convencional (SC), ao longo do ciclo do milho. Para tal, foram coletadas amostras da camada de 0-5cm de solo semeado com milho em sucessão à aveia preta, sob os sistemas convencional e plantio direto, no dia
Publicado em: 2010
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10. Transformações na matéria orgânica nos sedimentos e águas eutrofizados da Represa Ibirité (Ibirité-Sarzedo, MG) tratados com nitrato de cálcio em microcosmos
Due to the growing concern with the environment and the welfare of future generations the search for the restoration of degraded areas and the reestablishment of equilibrium between the anthropogenic and natural environments are nowadays highlighted. The Ibirité Reservoir (Ibirité-Sarzedo, MG) is an example of water body impacted by the disorganized urbani
Publicado em: 2010
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11. BIOCHEMICAL COMPOSITION AND DECOMPOSITION OF SHOOT AND ROOTS FROM COMMERCIAL CROPS AND COVER SOIL PLANTS / COMPOSIÇÃO BIOQUÍMICA E DECOMPOSIÇÃO DA PARTE AÉREA E RAÍZES DE CULTURAS COMERCIAIS E PLANTAS DE COBERTURA DE SOLO
Crop residues (CR) composed by shoots and roots of plants are the main source of C for the agricultural soils. During the decomposition of these CR in the soil, part of C is evolved as CO2 and nutrients are mineralized, with emphasis on the N. Among the factors that affect decomposition of CR, the biochemical composition has great importance. The objectives
Publicado em: 2010
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12. Characterization And Application Of Tannase Produced By Aspergillus Niger ITCC 6514.07 On Pomegranate Rind
Extracellular tannase and gallic acid were produced optimally under submerged fermentation at 37 0C, 72 h, pH 5.0, 10 %(v/v) inoculum and 4 %(w/v) of the agroresidue pomegranate rind (PR) powder by an Aspergillus niger isolate. Tannic acid (1 %) stimulated the enzyme production by 245.9 % while with 0.5 % glucose, increase was marginal. Tannase production wa
Brazilian Journal of Microbiology. Publicado em: 2009-12