NITROGEN MANAGEMENT INTENSITY CHANGES IN FADN REGIONS OF POLAND IN 2002-2016.

The paper presents trends of nitrogen management intensity changes. The comparative analysis of nitrogen management in the period 2002-2016 was performed at FADN regions of Poland level. It included comparisons of balances and efficiency of nitrogen utilization as well as rate and direction of nitrogen input and output in the agricultural production cycle. The structural and quantitative analysis of both sides of gross nitrogen balance provides information about the agricultural production as well as the direction and rate of changes . Although there was a visible, moderate intensification (A= type) of agricultural production in Poland, a significant differences between four regions of Poland were found. FADN region 785 (Pomorze i Mazury) had positive rating of agro-environmental aspects and nitrogen management. On the other hand, FADN region 790 (Wielkopolska i SSlask) was characterized by ineffective intensification of plant production (increased nitrogen inputs with low effect in nitrogen output). [ABSTRACT FROM AUTHOR]