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The main component in fertilizer production is natural gas (and sometimes coal or oil). Also the reason that it shouldn't come as a surprise that russia is a major producer of fertilizer.
So fairly simple to put the blame actually:
Russia's dumb war -> high natural gas prices -> high fertilizer prices -> high food prices
Sustained high fertiliser prices could increase food prices by 74% from 2021 levels by the end of this year

People complain about OPEC and fuel prices, but fertilizer is an indirect component in prices consumers pay.
This will have political impacts because people usually don't know how to assign blame when causes aren't stupidly simple and obvious. So they tend to vote for outrageous lies, and someone not already holding an elected office.