Data/hora: 03/06/2024 08:58:54

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 18/10/1995
Data da última atualização: | 07/04/2017
Autoria: | ANDERSON, J. P. E.; DOMSCH, K. H.
Título: | A physiological method for the quantitative measurement of microbial biomass in soil.
Ano de publicação: | 1978
Fonte/Imprenta: | Soil Biology Biochemistry, v.10, p.215-221, 1978.
Idioma: | Inglês
Conteúdo: | The method is described for the rapid and objective estimation of the amount of carbon in the living, non-resting microbial biomass of soils. The method, which is based on the initial respiratory response of microbial population to amendment with an excess of a carbon and energy source, was quantified using an expanded version of Jenkinsons technique. The simultaneous application of the two methods to 50 soil samples showed a highly significant correlation (r = 0.96) between both. From this correlation it could be deduced that at 22C, a substrate-induced maximal respiratory rate of 1 ml CO2.h-1 corresponds to c.40 mg microbial biomass C. Evidence supporting these results was obtained from pure culture studies. The various soil types investigated were collected from agricultural as well as forest sites and they contained between 15 and 240 mg microbial C.100 g dry soil-1. The respiratory method provides reproducible estimates of biomass size whithin 1-3 h after soil amendment. It can be combined whithout difficulty with a selective inhibition method for determination of bacterial and fungal contributions soil metabolism.
Thesagro: | Bioquímica; Solo.
Thesaurus Nal: | biochemistry; soil.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (30080-1) - ADD - SP - PP - SP14667 -  - 14667 - DIS