* Ukraine and Russia are collectively the world's largest producer of potash

* Nitrogen fertilisers use natural gas in their production, which has skyrocketed in price

* China has banned or heavily restricted the export of fertiliser and fertiliser components over local supply fears

Put that together with the effective removal of the world's largest exporter of wheat (Russia) and the 5th largest exporter of wheat (Ukraine) from world supply, and food prices are gonna get nasty. Moreso in countries that tend to import Russian/Ukrainian wheat e.g. Egypt, Turkey, Bangladesh

Much of the potash of the world is in Belarus and Russia. Nitrogen fertilizer requires liquid natural gas, of which the price is surging. Phosphate based fertilizers are currently under export ban by China.