Abstract The paper refers to the determination of prince physical properties of luvisols and determine density, aparent density and soil porosity of the perimeter of the village Lugoj, Timis county crop of lettuce and cucumbers over a period of two years, namely 2014 and 2015. Similar surveys have been completed and NITA L., I. Rusu, V. Stephen (1999) on a haplic chernozems within SD Timisoara, applying fertilizer at different doses in maize. As material and research methods were used in the laboratories of Physics specific soils. In general, the results showed values of density, bulk density and porosity of the soil, area in the two years of research, to the culture of lettuce, cucumbers and on the. Lower values were recorded in March and higher in May October, so disturbed soil, registered values ranging from 2.43 g/cm3, the salad and 2.48 g/cm3, cucumbers. Soil bulk density, registered values ranging from 1.12 g/cm3, lettuce crop, in March 2014, and 1.20 g/cm3, the culture of cucumbers in the month of October. The total porosity, 50% had values, the salad, in March 2014. Aeration porosity, had values of 14.40%, cucumbers, during the month of March 2015. The paper is of great practical significance, because by knowing the physical properties of the soil can occur, if necessary, so that the values can be recorded in accordance with the requirements of the plants. The paper also has a scientific relevance, many authors consider that, knowing the physical properties of soils are more important than those chemical fertilization whose correction and amendment is easier to achieve. The work is a continuation of other studies and research achievement in physics soils, soils with different properties, so as to know more about the properties of each type and subtype of soil and can recommend crops that are suitable for each ground separately, in view of the species and the physical properties of soils studied.

soil; culture; physical properties; fertility; density; porosity

Presentation: oral