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	Provedor de dados BABT (2) Autor Andrade,Emilene (2) Miyazawa,Mário (2) Oliveira,Edson L. de (1) Oliveira,Edson Lima de (1) Pavan,Marcos A. (1) Pavan,Marcos Antonio (1) Mais... Palavra-chave Micronutrient (2) Heavy metal (1) Mulch (1) Organic carbon (1) Plant residue (1) Soil analysis (1) Transition metal (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2005 (1) 2002 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Re-evaluation of manganese solubility as affected by soil sample preparation in the laboratory BABT Andrade,Emilene; Miyazawa,Mário; Pavan,Marcos Antonio; Oliveira,Edson Lima de. Laboratory experiments were conducted to re-evaluate the effects of drying and the time between drying and Mn analysis on soil Mn solubility using maize seedlings as test plant. Samples of five soil types were collected in the field, transferred to laboratory and submitted for the following treatments: dried in the shade at 25ºC and dried at 65ºC followed by Mn determination immediately and after 30 and 60 days. Ninety days later soil samples were rewetted at field capacity and maize seedlings were grown for 7 days. Evaluations included plant Mn content and soil Mn extracted with NH4OAc 1 mol L-1 pH 7. The lowest soil and plant Mn contents were found in soil samples dried in the shade at 25ºC. Drying soil sample at 65ºC and increasing the time between... Tipo: Info:eu-repo/semantics/article Palavras-chave: Micronutrient; Transition metal; Soil analysis. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000500017 Effect of Organic Matter on Manganese Solubility BABT Andrade,Emilene; Miyazawa,Mário; Pavan,Marcos A.; Oliveira,Edson L. de. The objective of this study was to re-evaluate some aspects of the relative importance of organic matter on Mn solubility in acid soil conditions. Field study showed that black oats, oil seed radish, elephant grass, lupin, leucaena, and coffee leaves serving as mulch decreased Mn solubility as compared with bare soil. The decrease in Mn solubility with plant mulch was related to increase in soil moisture content. Laboratory study showed that increasing temperature from 25 to 100ºC increased Mn solubility and total soil organic carbon was little changed; from 150 to 200ºC increased both Mn solubility and organic carbon oxidation, and up to 300ºC decreased Mn solubility and stoped organic carbon oxidation . Aluminum solubility always increased with... Tipo: Info:eu-repo/semantics/article Palavras-chave: Plant residue; Mulch; Organic carbon; Heavy metal; Micronutrient. Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000100003 Registros recuperados: 2 Primeira ... 1 ... Última

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