A lot of crops need nitrogen. What has been impacted by Trump's Iran war is the supply of Urea through the Straight of Hormuz.

If the closure persists then no doubt other sources can ramp up to fill the void, but it's going to be too late for this season. Some Asian farmers have already chosen not to bother planting rice crops since the increase in fertilizer (urea) cost has meant they'd be losing money.

Fuel prices are also impacting imported produce prices.