Food is already going to go up in the future even if they opened the Straits today. Crops have sowing and harvesting seasons. Miss the sowing season because of a lack of fertiliser and you’ve no harvest. And those windows for sowing are fixed and known, you can’t just go “oh I’ve got fertiliser now so I can go plant my crops.” If you’re out of the sowing window you can plant the seed but it’s not going to germinate and grow. And for a lot of crops we’re in the middle of that season right now.