%0 Journal Article %T Contenido de carbono y nitr¨®geno de la biomasa microbiana en suelos de La Habana %A G¨®mez-Jorrin %A Lu¨ªs A. %A Morales-Valdes %A Amalia %A Due£¿as-Vega %A Graciela %A Dantin-Mart¨ªnez %A Juana Mar¨ªa %A Ch¨¢vez-Gonzalez %A Nereida %A Torres-Leblanch %A Maite %J Agronom¨ªa Mesoamericana %D 2012 %I Scientific Electronic Library Online %X this research was carried out to calculate the microbial biomass carbon and nitrogen content in red ferralitic soils from the havana province, using the ¡°fumigation and extraction¡± method. for this work soil samples were taken from four different sites (bainoa, la salud, quivic¨¢n and guanajay) with different physicalchemical characteristics, including organic matter content which ranged from 2.8 and 5%. the sensibility of the methods employed was asssessed using the mean standard error as statistical parameter. the c content in soil microbial biomass ranged from 289 and 425 ¦Ìg/g of soil (289 - 425 mg/kg of soil) and had it a significant correlation by soil organic matter content. on the other hand, n content in soil microbial biomass ranged from 62 and 90 ¦Ìg/g of soil (62-90 mg/kg of soil), and had it a significant correlation by soil nitrogen content. the mean standard error of microbial c determinations ranged from 2 and 16, being slightly superior to previous reports, while the mean standard error of the microbial n determinations were among adequate limits. finally, this methodology was adapted to laboratory conditions. %K microbial biomass %K fumigation-extraction method %K carbon and nitrogen %K red ferralitic soil. %U http://www.scielo.sa.cr/scielo.php?script=sci_abstract&pid=S1659-13212012000100019&lng=en&nrm=iso&tlng=en