Keywords: Polish fertilizer industry, Nitrogen fertilizers, Fertilizer industry, Nitrogen production, History of fertilizer industry, Mineral fertilizer, Phosphorus fertilizer, Multi-component fertilizer, Calcium phosphate, Ammonium phosphate.

NITROGEN SECTION
The past, present and future of the Polish nitrogen fertilizer industry is briefly presented. The history of this industry can be traced back to 1915 when a nitrogen fertilizer and compound factory was built in Chorzów. This industry developed very quickly after World War II and at present five big nitrogen (N) and compound fertilizer works are operating in the country. The combined production capacity of all factories is about 1.6 million tonnes N and includes practically the whole range of nitrogen fertilizers. Four of these factories are stock companies of the State Treasury, while one is fully privatised. In recent years outstanding progress has been made in the fields of technological development and environmental protection, based mainly on national research and development knowledge.

PHOSPHORUS SECTION
The history of the Polish phosphorus fertilizer industry and the review of methods of phosphorus containing fertilizers production processes applied nowadays by the domestic fertilizer plants comparing to the world achievements in this area are presented. The recent changes of the processes of fertilizers production are discussed and the quality of fertilizers obtained is assessed. Present world tendencies in the phosphorus and multi-component fertilizers industry are presented.

Nitrogen section:
Jerzy Paprocki, Plac Konstytucji 6/81, 00- 550 Warszawa, Poland.
Phosphate section:
Andrzej Biskupski, Fertilizers Research Institute, 24-101 Puławy, Poland.
Henryk Górecki, Józef Hoffmann and Przemysław Malinowski, Institute of Inorganic Technology and Mineral Fertilizers, Wrocław University of Technology, Poland.

36 Pages, 1 Figure, 11 Tables, 14 References.