Which is probably itself a consequence of the fact energy is getting more expensive at a global scale since you need a decent amount to make fertilizers. You have to dig deeper/further for increasingly lower returns nowadays. Let's hope that enough of that energy is actually spent on energy transitioning or we're going to have big problems. (Ha, my bad, we're actually having big problems, right now)
Kinda, but it's also because China closed the fertilizer exports, and Russia invaded Ukraine and the west is actively boycotting russian fertilizer exports.