Most nitrogen fertilizers likely are in place for the 2022 production of spring crops in North America, albeit at much higher prices than in 2021. However, the continuing Ukraine-Russia war can limit fertilizer supplies for the crop that will be planted in South America later in 2022, leading to further upward price pressures for fertilizer used in North America for the 2023 production year. Herein, we detail the international trade of nitrogen fertilizers before hostilities in Ukraine-Russia began. Then we evaluate possible changes in supply resulting from the Ukraine-Russia War.
 
The Food and Agriculture Organization (FAO) of the United Nations maintains a database of the use, production, and trade of the three major fertilizer nutrients: nitrogen, phosphate, and potash. Table 1 shows the nitrogen data for 2019, the last year in which data is available. Nitrogen statistics are given for the top 20 countries in nitrogen use, along with a total for all countries in the European Union (EU). Values in the table are stated in terms of million metric tons of actual N, and include:
 
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