Data/hora: 10/06/2024 14:30:55

Provedor de dados: 	1	
País: 	Brazil	
Título: 	Adsorption of P and forms of iron in no-tillage areas in the ‘Cerrado’ biome

Adsorption of P and forms of iron in no-tillage areas in the ‘Cerrado’ biome	
Autores: 	Pereira, Marcos Gervasio; Guareschi, Roni Fernandes; Perin, Adriano.	
Data: 	2014-11-25	
Ano: 	2014	
Palavras-chave: 	Ciências Agrárias - Agronomia - Ciência do Solo soil organic matter; Pasture; Iron oxides; Oxisol Fertilidade do Solo soil organic matter; Pasture; Iron oxides; Oxisol.	
Resumo: 	The objective of this study was to evaluate the forms of iron extracted as sodium dithionite-citrate-bicarbonate (Fed), acid ammonium oxalate (Feo) and sodium pyrophosphate (Fep) and the relationship between these variables and the total organic carbon content and maximum adsorption capacity of P (MACP). The areas selected for this study had been using a no-tillage system (NTS) for varying periods of time: 3 years (NTS3), 15 years (NTS15) and 20 years (NTS20). These areas were compared with an area of native ‘Cerrado’ (CE) and a pasture area planted with Brachiaria decumbens (PA). The soil of the areas studied was classified as dystrophic oxisol. In each area, samples were collected at 0–5 cm and 5–10 cm. A correlation was observed between the C content and the different forms of Fe in the areas studied. There was a significant positive correlation between the carbon content and the forms of iron (Feo, Feo/Fed and Fep) and a negative correlation with the level of Fed. The areas of CE and PA had the highest MACP, which diminished as the amount of time of NTS use increased.  	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17686

10.4025/actasciagron.v37i1.17686	
Editor: 	Universidade Estadual de Maringá	
Relação: 	http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17686/pdf_59	
Formato: 	application/pdf	
Fonte: 	Acta Scientiarum. Agronomy; v. 37, n. 1 (2015); 109-116

Acta Scientiarum. Agronomy; v. 37, n. 1 (2015); 109-116

1807-8621

1679-9275