Data/hora: 03/06/2024 13:45:17

Biblioteca(s): | Embrapa Amazônia Ocidental.
Data corrente: | 28/11/2007
Data da última atualização: | 13/08/2018
Autoria: | STEINER, C.; DAS, K. C.; GARCIA, M. V. B.; FÖRSTER, B.; ZECH, W.
Afiliação: | Christoph Steiner, University of Bayreuth; Keshav C. Das, Biorefining and Carbon Cycling Program; MARCOS VINICIUS BASTOS GARCIA, CPAA; Bernhard Förster, ECT Oekotoxikologie GmbH; Wolfgang Zech, University of Bayreuth.
Título: | Charcoal and smoke extract stimulate the soil microbial community in a highly weathered xanthic Ferralsol.
Ano de publicação: | 2008
Fonte/Imprenta: | Pedobiologia, v. 51, p. 354-366, 2008.
Idioma: | Inglês
Conteúdo: | The influence of charcoal and smoke condensates (pyroligneous acid, PA) on microbial activity in a highly weathered Amazonian upland soil was assessed via measurements of basal respiration (BR), substrate-induced respiration (SIR), and exponential population increase after substrate addition. PA extracts are commonly used for fertilizer or as pest control in Brazil, where phosphorus (P) availability and nitrogen (N) leaching are among the most severe limitations for agriculture. Microbes play an important role in nutrient cycling and solubilizing of phosphate. BR, microbial biomass, population growth and the microbe?s efficiency (expressed by the metabolic quotient) increased linearly and significantly with increasing charcoal concentrations (50, 100 and 150 g kg1 soil). Application of PA caused a sharp increase in all parameters. We suppose that the condensates from smoke contain easily degradable substances and only small amounts of inhibitory agents, which could be utilized by the microbes for their metabolism.
Palavras-Chave: | Carvão de lenha; Extrato do fumo.
Thesagro: | Microbiologia do Solo.
Thesaurus Nal: | terra preta.
Categoria do assunto: | --
Registro original: | Embrapa Amazônia Ocidental (CPAA)
Exemplares: | CPAA - (18327-1) - UPC - AP - PP - S8525 -  - S8525 - DIS