Abstract: The paper refers to acreage of 182.080 ha of agricultural terrain. This area is situated in Western Romania and gathers 26 cadastral territories belonging to Arad County. The authors present a description of hydrological, geological, geomorphological condition diversity, which had effect on soil cover structure (comprised soil yield capacity), found to be very heterogeneous in space and time. In its activity, OSPA Arad performed numerous pedological and agrochemical studies. Research goal is the accumulation of scientific data on the chemical, physical and hydro-physical characteristics of soil necessary to support land productivity, through a complex firm approach of physical, geographical, edaphic and climatically condition, from the Mures-Crisul Alb interfluve. Following its settlement, the natural conditions (relies, lithology, hydrology, vegetation) are specific to a low subsidences plains, ramble, an build, where they formed and evolved main types of soils who reflected by their morphological, biological, chemical proprieties the main characteristics of landscape defining and determining for the growth and fruition of the main cultivated plants. This paper provides basic knowledge and methodological elements for evaluation and characterization af the natural and man-modified resources, in the hope that the information presented will pique the interest of decision maker in the near future so that agricultural research and practice, with environmental protection, strive to develop interdisciplinary studies, not being able to talk about a healthy environment without a healthy soil.

Key words: factor, edaphic, resources, productive

Presentation: oral