Abstract: The research from the topic announced was conducted in an experimental field of Soil Sciences discipline which is located in B.U.A.S.M.V. "King Michael I of Romania" in Timișoara Didactic Station from Timișoara and after that in the research laboratory of the Agrochemistry Department from the Faculty of Agriculture. The purpose of the paper is to observe specific variations in the determination of amino acids and vitamins B1 of wheat grain, following differentiated mineral fertilization with nitrogen, phosphorus and potassium. The field experiments have a factorial design with two factors, with wheat – maize- sunflower rotation. Each plot is sub-divided in four replicates, linear, with the size of 10 x 3 m (30 m2). The experiment was made about wheat using the zoned variety in the West Plain of the country, namely Alex Variety. The mineral fertilization has the best efficacy if is merged harmonious, and under analytic agrochemical control with the other agrophytotechnical measures which enhances the results of fertilizers application. The period of experimentation, agricultural years 2012-2013 and 2013-2014, were characterized by variable climatic conditions, slightly reduced rainfall from the annual average and high temperatures.

Keywords: wheat, chemical fertilizers, experiment, amino acids, vitamin B1.

Presentation: oral