SciELO - Scientific Electronic Library Online

 
vol.31 número4Diversidade genética e eficiência simbiótica de rizóbios noduladores de acácia-negra de solos do Rio Grande do SulFósforo orgânico em solos sob florestas montanas, pastagens e eucalipto no Norte Fluminense 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

MALUCHE-BARETTA, Carolina Riviera Duarte et al. Microbiological and chemical soil attributes in apple orchards under conventional and organic production systems in th State of Santa Catarina, Brazil. Rev. Bras. Ciênc. Solo [online]. 2007, vol.31, n.4, pp.655-665. ISSN 1806-9657.  http://dx.doi.org/10.1590/S0100-06832007000400006.

The study was carried out in Urupema, state of Santa Catarina, to evaluate the effects of conventional and organic apple production systems on soil microbial biomass, soil microbial activity and the relationship between soil microbial biomass attributes and C and N soil contents. The soil under the canopy of 24 plants (0-10 cm) was sampled in a 45 x 54 m grid, in both orchards (conventional and organic), in December 2002 and June 2003, and analyzed for: microbial biomass carbon (MBC), total organic carbon (TOC), microbial biomass nitrogen (MBN), total nitrogen (TN), basal respiration (C-CO2), MBC:TOC and MBN:TN ratios, and metabolic quotient (qCO2). The values of MBC, TOC, and MBC:TOC ratio were higher in the organic than in the conventional orchard on both sampling dates. The attributes of MBN, TN, and MBN:TN ratio were the least sensitive to management systems and sampling dates. Unlike sampling dates, C-CO2 did not differ significantly in the treatments. Highest qCO2 values were found in the conventional orchard.

Palavras-chave : microbial biomass activity; microbial biomass carbon; microbial biomass nitrogen; organic orchard.

        · 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