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	Provedor de dados Ciência Rural (1) Rev. Bras. Ciênc. Solo (1) Autor Barreto,Patrícia Anjos Bittencourt (1) Barros,Nairam Félix de (1) Bissani,Carlos Alberto (1) Camargo,Flávio Anastácio de Oliveira (1) Gama-Rodrigues,Antonio Carlos da (1) Gama-Rodrigues,Emanuela Forestieri da (1) Gianello,Clesio (1) Meurer,Egon José (1) Riboldi,João (1) Tedesco,Marino José (1) Mais... Palavra-chave Potentially mineralizable N (2) Mathematical models (1) Microbial biomass N (1) Microbial cycling (1) N pools (1) Simple and double exponential (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2012 (1) 2002 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Empirical models to predict soil nitrogen mineralization Ciência Rural Camargo,Flávio Anastácio de Oliveira; Gianello,Clesio; Tedesco,Marino José; Riboldi,João; Meurer,Egon José; Bissani,Carlos Alberto. Empirical models are mathematical equations that can be fitted to experimental results. The use of these models aims to evaluate or predict observed phenomena or experimental data with the objective of helping the development of adequate soil management practices. Based on these considerations, eight mathematical models described in the literature are compared in the present work, using as experimental data the mineral N accumulated during 32 weeks of incubation in Southern Brazilian soils. To obtain mineralization values experimentally, an incubation-washing procedure with 0.01mol L-1 CaCl2 was used. Mineral N was determined at the beginning of the incubation and in the 2nd, 4th, 8th, 16th and 32nd weeks. Among the models, the best fit was obtained with... Tipo: Info:eu-repo/semantics/article Palavras-chave: Potentially mineralizable N; Mathematical models; Simple and double exponential; N pools. Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782002000300005 Nitrogen balance in soil under eucalyptus plantations Rev. Bras. Ciênc. Solo Barreto,Patrícia Anjos Bittencourt; Gama-Rodrigues,Antonio Carlos da; Gama-Rodrigues,Emanuela Forestieri da; Barros,Nairam Félix de. An understanding of the role of organic nitrogen (N) pools in the N supply of eucalyptus plantations is essential for the development of strategies that maximize the efficient use of N for this crop. This study aimed to evaluate the distribution of organic N pools in different compartments of the soil-plant system and their contributions to the N supply in eucalyptus plantations at different ages (1, 3, 5, and 13 years). Three models were used to estimate the contributions of organic pools: Model I considered N pools contained in the litterfall, N pools in the soil microbial biomass and available soil N (mineral N); Model II considered the N pools in the soil, potentially mineralizable N and the export of N through wood harvesting; and Model III (N... Tipo: Info:eu-repo/semantics/article Palavras-chave: Microbial biomass N; Potentially mineralizable N; Microbial cycling. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000400018 Registros recuperados: 2 Primeira ... 1 ... Última

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