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	Provedor de dados Scientia Agricola (1) Rev. Bras. Ciênc. Solo (1) Autor Freitas,Írio Fernando de (1) Mattiazzo,Maria Emília (1) Mattiello,Edson Marcio (1) Melo,Leônidas Carrijo Azevedo (1) Novais,Roberto Ferreira (1) Novais,Sarah Vieira (1) Pires,Adriana Marlene Moreno (1) Vergutz,Leonardus (1) Mais... Palavra-chave Extractant (2) Available nutrient (1) Heavy metal (1) P adsorption (1) Phosphate buffer capacity (1) Phytoavailability (1) S adsorption (1) Sewage sludge (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2015 (1) 2003 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última LOSS OF EXTRACTION CAPACITY OF MEHLICH-1 AND MONOCALCIUM PHOSPHATE AS A VARIABLE OF REMAINING P AND ITS RELATIONSHIP TO CRITICAL LEVELS OF SOIL PHOSPHORUS AND SULFUR Rev. Bras. Ciênc. Solo Novais,Sarah Vieira; Mattiello,Edson Marcio; Vergutz,Leonardus; Melo,Leônidas Carrijo Azevedo; Freitas,Írio Fernando de; Novais,Roberto Ferreira. The Mehlich-1 (M-1) extractant and Monocalcium Phosphate in acetic acid (MCPa) have mechanisms for extraction of available P and S in acidity and in ligand exchange, whether of the sulfate of the extractant by the phosphate of the soil, or of the phosphate of the extractant by the sulfate of the soil. In clayey soils, with greater P adsorption capacity, or lower remaining P (Rem-P) value, which corresponds to soils with greater Phosphate Buffer Capacity (PBC), more buffered for acidity, the initially low pH of the extractants increases over their time of contact with the soil in the direction of the pH of the soil; and the sulfate of the M-1 or the phosphate of the MCPa is adsorbed by adsorption sites occupied by these anions or not. This situation makes... Tipo: Info:eu-repo/semantics/article Palavras-chave: P adsorption; S adsorption; Available nutrient; Phosphate buffer capacity; Extractant. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000401079 Biosolids conditioning and the availability of Cu and Zn for rice Scientia Agricola Pires,Adriana Marlene Moreno; Mattiazzo,Maria Emília. Sewage treatment process is a factor to be considered for biosolid use in agriculture. The greatest sewage treatment facility of São Paulo State (Barueri/SP) altered in the year 2000 of its sludge treatment. The addition of ferric chloride and calcium oxide was substituted by the addition of polymers. This change can modify heavy metal phytoavailability. A green house experiment, using 2 soils treated with biosolids (three with and one without polymers with and without polymers) was performed to evaluate Cu and Zn phytoavailability using rice (Oryza sativa L.) as test plant. Three kilograms of two soils (Haphorthox abd Hapludox) were placed in pots and the equivalent to 50 Mg ha-1 (dry basis) of biosolid was added and incorporated. The statistical design... Tipo: Info:eu-repo/semantics/article Palavras-chave: Sewage sludge; Heavy metal; Phytoavailability; Extractant. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000100024 Registros recuperados: 2 Primeira ... 1 ... Última

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