Data/hora: 23/09/2024 18:17:17

Biblioteca(s): 	Embrapa Pesca e Aquicultura.	
Data corrente: 	16/07/2012	
Data da última atualização: 	15/03/2013	
Autoria: 	BORTOLON, L.; GIANELLO, C.	
Afiliação: 	LEANDRO BORTOLON, CNPASA; CLESIO GIANELLO, UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL.	
Título: 	Multielement extraction from southern brazilian soils.	
Ano de publicação: 	2012	
Fonte/Imprenta: 	Communications in Soil Science and Plant Analysis, New York, v. 43, n. 16, p. 1615-1624, 2012.	
Idioma: 	Inglês	
Conteúdo: 	To evaluate the effectiveness of multielement extraction of Mehlich 1 and Mehlich 3 solutions in soils from southern Brazil, correlation studies are needed. The amounts of phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), copper (Cu), and zinc (Zn) extracted with Mehlich 1 solution, 1.0 M potassium chloride (KCl), and 0.1 M hydrochloric acid (HCl) for representative soil types of the Rio Grande do Sul state (Brazil) were compared with those extracted with Mehlich 3 solution. The amount of nutrients extracted with different methods indicated high correlation coefficients. On average, Mehlich 3 solution extracted greater amounts of P (50%) and K (20%) than Mehlich 1 solution. Calcium amounts extracted with all solutions were similar. Magnesium amounts extracted with Mehlich 3 solution were on average 20% less than the amounts extracted with 1.0 M KCl solution. Mehlich 3 solution extracted similar amounts of Cu as the 0.1 M HCl but lesser amounts of Zn. Simultaneous multielement soil-test methods such as Mehlich 1 and Mehlich 3 solutions are efficient in soils from southern Brazil and are a feasible alternative to improving the efficiency of soil-testing laboratories.	
Palavras-Chave: 	Mehlich 1; Mehlich 3; Rio Grande do Sul, RS.	
Thesagro: 	Análise do solo; Solo.	
Categoria do assunto: 	P Recursos Naturais, Ciências Ambientais e da Terra	
Registro original: 	Embrapa Pesca e Aquicultura (CNPASA)	
Exemplares: 	CNPASA - (65-1) - UPC - AP - PP - CNPASA-SP12 -  - 2012.012 - DIS