My understanding is that there are three popular types of fertilizer and all three require materials (phosphate, nitrogen, potash) that currently in a shortage.

My understanding is that there are three popular types of fertilizer and all three require materials (phosphate, nitrogen, potash) that currently in a shortage. 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.