MAP Fertilizer Price Hits $800 Per Ton as Retail Prices SpikBoth UAN32 and MAP were 6% higher compared to last month. UAN32 had an average price of $444/ton while MAP was at $800/ton. MAP is now at $800/ton for the first time since the third week of December 2009, when the price was $802/ton. The current price of the phosphorus fertilizer is the fifth highest price in the history of the nearly 13-year-old DTN data. https://www.dtnpf.com/agriculture/web/ag/crops/article/2021/10/06/fertilizer-price-gains-losing-steam