%0 artículo original %A Gómez-Jorrin, Luis A. %E Morales-Valdes, Amalia %E Dueñas-Vega, Graciela %E Dantin-Martínez, Juan María %E Chávez-González, Nereida %E Torres-Leblanch, Maite %D 2012 %G spa %T Microbial biomass carbon and nitrogen content in Havana Soil. %U https://revistas.ucr.ac.cr/index.php/agromeso/article/view/6452 %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g fumigation and extractionh method. For this work soil samples were taken from four different sites (Bainoa, La Salud, Quivican and Guanajay) with different physicalchemicalcharacteristics, 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 microbialbiomass ranged from 289 and 425 ƒÊg/g of soil (289 . 425mg/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 ƒÊg/g of soil(62-90 mg/kg of soil), and had it a signifi cant 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 laboratoryconditions.