The paper aimed to make a comparision between the influence of conservation(no tillage) system and conventional tillage system on wheat productivity.The research work was carried out at Turda Agriculture Research and Development Station, within a partenership with Agricultural University from Cluj-Napoca during the period 2008-2011. The experiments were organized according to a split-plot model, four factors are considered: A Factor: agricultural system of work with two graduation: A1-clasical or convrntional system(with ploughing, preparation of the soil, sowing ,a.s.o); A2- conservative agricultural system or “no tillage”; B Factor: years of experimentation with four graduation; C Factor: fertilization, with two graduation:N40P40, concomitant with sowing and N40P40, concomitant with aowing + N50P30, in spring when the vegetation of wheat are resumptening; D Factor: treatements in the vegetation period, with four graduation. The Conservative Agricultural system had a positive impact on wheat yeld leading to 303 kg/ha higher then the conventional system of work. Also the fertilization system applied in this experiment, revealed that the grain yeld is  higher in conservative system with 338 kg/ha then the conventional system of agriculture. The C2 system of fertilization is most significant in conservative agricultural system, but in conventional system it is not. The cause of higher level of production obtained in conservative syatem, we think, is the conservation of water in soil more than in conventional system, who reveal in quality of grains( number of grain in the wheat-car, MMB, aso). The experiment reveal the most importabce assignment of the years of culture.

conservative agricultural system,no tillage,water conservation,fertilization, trataments

Presentation: oral