Abstract:

In this study, the chemical fertilizer types used in Bursa between 2008 and 2016 were classified according to their structures and calculated the annual amounts and use amounts according to the districts. Species of fertilizer used in the districts are maped with the Geographic Information System and the statistical relations between the agricultural product varieties and the fertilizer varieties are evaluated by correlation and regression analysis. In Bursa, due to the increase in population and exports, the use of fertilizer has increased along with agricultural production. It has been determined that nitrogen-containing fertilizers have the highest use among other fertilizer groups. The use of nitrogen (maximum 82.47 kg/ha- Karacabey), nitrogen, phosphorus and potassium (maximum 31,59 kg/ha-Karacabey), calcium nitrate (maximum 8.1 kg/ha-Yenişehir) and nitrogen and phosphorus (maximum 58.45 kg/ha-Yenişehir) fertilizers was most found in Karacabey, Yenişehir, Mustafakemalpaşa and Inegöl. Triple Super Phosphate (TSP) (maximum 12.5 kg/ha-Gürsu) and Zn (maximum 26.84 kg/ha-Gemlik) fertilizers have been used more in Gürsu, Orhangazi, Mudanya, Gemlik and Iznik. The highest correlation values (r2) were found between nitrogen, phosphorus and potassium fertilizers and field plants and vegetable production (0,423-0,788). Also, nitrogen, nitrogen and phosphorus and nitrogen, phosphorus and potassium fertilizers have been found to be positively related to plant production and effective in production. This study is important in order to determine the distribution of agricultural fertilizer use, which is a spread source of pollution, and to provide information on the fertilizer management work that can be done to reduce pollution.

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