RESULTS REGARDING THE EFFECT OF CROP ROTATION AND FERTILIZATION ON THE YIELD AND QUALITIES AT WHEAT AND MAIZE IN SOUTH OF ROMANIA.

In conditions of the modernization of agriculture, knowledge and management of the factors that can influence the production and quality are required. An important role belongs to the environmental factors and agrotechnical measures, which together with the genetic characteristics of the varieties or hybrids contribute to the variation of production and quality. The researches were performed during the 2015-2018, in the experimental field of NARDI Fundulea and aimed to study the influence of agrotechnical practices on the yields and quality of wheat and maize. The paper presents the results obtained in long term experiences with fertilizers and rotations, under non-irrigation condition. Yields and the quality is directly influenced by the fertilizers quantity and crop rotation. The results show that 4-year rotations and fertilization contribute with 20-50% to the increase of production and protein content increases with the nitrogen rate applied and less with phosphorus rate, but together (NP) have a significant effect for both wheat and maize. This percentage varied between 9.0-15.5% for wheat and 5.5-9.5% for maize depending on crop year. [ABSTRACT FROM AUTHOR]