The microbial evaluation of soil from Ialomiţa county, Romania

Abstract

This paper presents the population of micro-organisms found in sixsoil samples from Balaciu, Ialomiţa county, Romania, with a certain electrical conductivityand pH.The soil samples were dried, ground, revitalized with peptone water, and thenincubated at 31 °C. The culture media used were: nutrient agar: yeast extract, peptone, agar; YPG agar: yeast extract, peptone, glucose, agar supplemented with chloramphenicol. The soil samples were inoculated in Petri dishesand incubated for 7 days at 35 °C for bacteria and 28 ºC for fungi. After incubation, the number of microorganismswas calculated by the CFUdetermination technique (colony forming units).Also, the electrical conductivity with values less than 4 dS/m andthe pH, whose values exceeded 8, were determined.