Supply chain disruptions, which are causing major problems across the entire American economy, are hitting agriculture particularly hard because of the sector’s global reach, economists said last week. 

“These supply chains are more important to agriculture than to most other sectors,” said Ernie Goss of Creighton University in Omaha. “The farmer is really being affected because they are both producing for world markets and buying supplies from the world markets.”

“Ag is right in the thick of this problem, with a lot of other industries,” said Chad...