The present paper carries out an analysis of the obtained yields in winter wheat, two-row barley, maize, soyabeans and sugar beet crop on represetative soils from the hilly areas of the Transsilvanian Field and The Hills of Somes: chernozem cambic, chernozem argillic, haplic luvisol argillic and haplic luvisol molic, according to the soil classification system. Unconventional soil tillage systems represent alternatives in the crop technology of straw cereals, of maize, of soya and of beet sugar. The efficiency of unconventional soil tillage systems is expressed by the output per hectar must be analysed connected to the type of the soil, the cultivated plant, the climate conditions and the degree of weed density in the crops. In all unconventional systems of soil tillage an adequate strategy is required to combat the weeds because they grow too early and in a larger quantity than when the classical way of tillage is used.
