SciELO - Scientific Electronic Library Online

 
vol.34 número2Influência do tipo de amostragem na constante dielétrica do solo e na calibração de sondas de TDRImportância do fluxo de massa e da difusão no suprimento de nutrientes ao milho e da composição do exsudato xilématico em resposta ao tamanho dos agregados e ao potencial da água do solo 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

VASCONCELOS, Romero Falcão Bezerra de et al. Aggregate stability in a dystrophic cohesive yellow latosol of a costal plain under different sugarcane residue application. Rev. Bras. Ciênc. Solo [online]. 2010, vol.34, n.2, pp.309-316. ISSN 1806-9657.  http://dx.doi.org/10.1590/S0100-06832010000200004.

The potential yield of sugarcane depends on factors related to climate, soil and the plant variety. Management systems that provide the addition of organic waste to the soil can cause changes in physical attributes of the soil, enhancing the growth of the root system and sugarcane yield. The objective of this study was to evaluate the effects of different management systems at several levels of organic residue addition on the distribution and indices of aggregate stability of dystrophic cohesive Yellow Latosol of coastal plains, in the State of Alagoas. Plots were selected in the following sugarcane-growing areas: area under irrigation management system, area fertigated with vinasse, and an area under application of vinasse + filter cake. These management systems were compared to each other and to a control (native forest). To evaluate the distribution and stability indices of soil aggregates, soil samples were randomly collected in the different areas, at the depths 0-0.20; 0.20-0.40 and 0.40-0.60 m, at points between two neighboring sugarcane rows. The results were subjected to analysis of variance and the mean compared by the Tukey test at 5 % significance. Simple correlation analysis was performed between some measured variables. Results showed that the different management systems induced changes in the aggregate distribution and that the stabilization of soil aggregates in the surface layer dependeds on the organic matter content and the action of successive cycles of soil wetting and drying. The studies of simple correlations showed that total organic C and aggregate stability indices were significantly and positively correlated.

Palavras-chave : aggregate stability; sugarcane management; cohesive 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