Most recent dealflow in the space as well as national hydrogen strategies have been explicitly calling out fertilizer for almost a decade now.
Saudi's PIF has specifically been active on this thesis becuase becoming a lead fertilizer producer is part of Vision 2030.
I'd recommend reading "Hydrogen Diplomacy" [0] to deep dive into this.
[0] - https://fupubco.com/books/index.php/fupub/catalog/book/2