The main purpose of the study presented in this paper was to assess the influence of amelioration measures on the soil microbial communities and their physiological activities in experimental field from Maxineni-Corbu Nou. Since in literature there are few data and information on the relationships between the amelioration processes and soil microbiological activity in saline soils, researches aiming to highlight the changes that occur, both in their activity and qualitative and quantitative distribution of microorganisms in relation to soil desalination were developed. The concept of intensive amelioration of saline soils includes both the application of a set of agropedoameliorative measures based on drainage and irrigation, adapted to specific conditions and restoration of biological activity. To highlight the main aspects of microbiological activity in saline soils, measurements in the experimental field Maxineni-Corbu Nou from Braila county were done. This field was established in 1977 and had as primary objective the intensive improvement of saline soils. Previous researches have been carried out in this region to describe the natural peculiarities and the main physical, chemical and biological properties of the salinized soils and to apply the most appropriate measures for preventing their degradation. The present research assessed the effects of these measures by monitoring the development of bacterial and fungal communities, as well as the physiological activities, expressed by the potential level of soil respiration. This new method was recently applied to the study of these soils, instead of other methods based on the evaluation of dehydrogenase activity. The paper brings to date the information concerning the actual state of the soils from experimental field Maxineni-Corbu Nou, with respect to microbial community, important by their implication in most processes that usually take place into the soil. The research is carried out within the postdoctoral research national project PN II RU - PD Contract 192/10.08.2010.

bacteria, fungi, soil respiration

Presentation: oral