The bankruptcy filing by the Des Moines-area supermarket chain Dahl’s Foods last week provides an illustration of the pitfalls of falling behind in a fast-moving market. And it’s a cautionary lesson for people who contend that agriculture should avoid new technology and return to old ways.

Dahl’s fell on hard times, ac¬≠¬≠cording to several business analysts, because it didn’t adjust to changing consumer trends. ...