The purpose of this paper is the evaluation of the agricultural land from the Periam commune, Timis County, for their sustainable use. The proposed objectives cover the following aspects: characterization of the natural environment; identifying and outlining soil and land units; characterization of the mapped out soil units; land assessment and establishing the favourability of various crops; grouping the land in usage categories; identifying and characterizing soil types and subtypes; calculating assessment grades, establishing usage categories and grouping soils in favourability classes; identifying sustainable options and selecting the ones insuring the best usage; monitoring soil evolution after applying or non-applying of some pedo-ameliorative measures; insuring optimal solutions for various problems regarding the protection, improvement and efficient use of soils, and land characterization depending on the management requirements of an agricultural exploitation. The paper is concluded by a series of results and discussions referring to the production capacity assessment for two types of soil identified on the locality territory, namely chernozem and gley soil.

The purpose of this paper is to observe and reevaluate the influence mineral and organic fertilizers have on soil reaction. Various dosages of fertilizer have been applied, chemical as well as natural (manure) and comparisons were made regarding their influence, depending on the culture system (intensive and superintensive) without changing the dosage, but taking fruit tree density per hectare into account. Research in this paper was carried out on an experimental field at the Didactic Station of the U.A.S.V. M. B. in Timisoara during 2016-2017 and later in the research laboratories of the Departments of Soil Science and Agro-chemistry of the Faculty of Agriculture in Timisoara. The soil on which the experiment is placed, is a chernozem, moderate gleized cambic, weakly decarbonated, clayey, on medium fine loss layers. The experiment is polyfactorial, type 2 x 6: factor A - the crop system: a(1) - the intensive system; a(2) - the superintensive system. Factor B - doses of fertilizer. The experiment includes 12 alternatives. Each alternative includes 4 trees, between the alternatives have been left two trees for insolation, between the repetition have been left four trees. In conclusion, a slight soil acidifying was accounted for, with the intensive system as well as with the superintensive one, on applying a combination of mineral + organic fertilizers. Also, the soil pH shows lower values in both culture systems when a higher dosage of mineral fertilizer is applied.