SciELO - Scientific Electronic Library Online

 
vol.34 número2Esterco de gado leiteiro associado à adubação mineral e sua influência na fertilidade de um latossolo sob plantio diretoAtributos químicos, mineralógicos e micromorfológicos de horizontes coesos de latossolos e argissolos dos tabuleiros costeiros do estado de Alagoas índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Revista Brasileira de Ciência do Solo

versão On-line ISSN 1806-9657

Resumo

GONCALVES, Gustavo Kruger  e  MEURER, Egon José. Phosphorus concentration changes in soils under flooded rice in Rio Grande do Sul, Brazil. Rev. Bras. Ciênc. Solo [online]. 2010, vol.34, n.2, pp.465-472. ISSN 1806-9657.  http://dx.doi.org/10.1590/S0100-06832010000200020.

Soils used for production of flooded rice in the state of Rio Grande do Sul are originated from different parent materials, resulting in different characteristics that affect P availability for the crop. The aim of this paper was to verify the differences in P availability for rice in soils originated from different parent materials. The experiment was carried out in a complete randomized block design, where five soils were exposed to absence or presence of triple superphosphate. In the soils derived from sandstone and granite sediment a faster Fe reduction and release of adsorbed P was observed than in soils originated from basalt. The amount of accumulated P in rice was higher in the Planosol than the Vertisol and Mollisol, with and without triple superphosphate application. Triple superphosphate fertilization resulted in greater amounts of P accumulated in all soils.

Palavras-chave : triple superphosphate; iron oxides; reduction in soils.

        · resumo em Português     · texto em Português     · Português ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons