Tendencies of Changing Intensity of Nitrogen Management in the Polish Regions

The study identifies trends in changes of the intensity of agricultural production in terms of nitrogen management. A comparative analysis of the character and kinds of nitrogen management at the voivodship level concerned the period 2002-2015. The analysis included a comparison of balances and use efficiency of gross nitrogen, as well as the pace and direction of the trend of inputs and outputs in the cycle of agricultural production. The structural and quantitative analysis of both sides of the gross nitrogen balance provides a lot of information about the conditions of agricultural production in the aspect of nitrogen management. While the intensification of plant production is moderate (type A =) in the scale of the country, there are significant differences among individual regions of Poland. In terms of agro-environmental assessment and nitrogen management types, the Lubuskie, Warmińsko-Mazurskie and Zachodniopomorskie voivodeships stood out positively.