From MSNBC.

The war in Iran and the closure of the Strait of Hormuz are now driving up costs far beyond the Middle East, and American farms are already feeling it. At a family-run farm in Arizona, the pressure is building. Crops are being harvested, but the cost of growing them is climbing fast.
Two critical inputs, diesel fuel and nitrogen fertilizer, are becoming more expensive, driving up the cost of simply running a farm. Farmers say these increases are becoming unsustainable. One Arizona Farm Bureau leader says it is adding thousands of dollars per truckload, costs they cannot pass on.That puts family farms at serious risk. And here is why it matters: small family farms make up nearly 90% of U.S. agriculture. If they are struggling, it will not stay on the farm. It shows up at the grocery store.