Logistics I think is large part of it. Another part is going to be the fertilizer shortage.
> Russia also exported 11% of the world's urea, and 48% of the ammonium nitrate. Russia and Ukraine together export 28% of fertilizers made from nitrogen and phosphorous, as well as potassium, according to Morgan Stanley.
Belarus potash exports, 18% of global supply, were also cut off in January due to US sanctions. This will force their dependence on Russia, with a Belarusian port on Russian soil, and for now they are struggling to export any of it.
> Russia also exported 11% of the world's urea, and 48% of the ammonium nitrate. Russia and Ukraine together export 28% of fertilizers made from nitrogen and phosphorous, as well as potassium, according to Morgan Stanley.
https://www.cnbc.com/2022/04/06/a-fertilizer-shortage-worsen...