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The warming climate causes new problems for crop storage
Wed, 2021-03-31 05:41 — mike kraftBut with temperatures edging higher, Sackett had to buy several small refrigeration units for his sprawling warehouses. Last year, he paid $125,000 for a bigger one. It’s expensive to operate, but beats having his potatoes rot.
“Our good, fresh, cool air is getting less all the time, it seems like,” he said on a recent morning as a front-end loader scooped up piles of plump, light-brown potatoes that would be packed into a tractor trailer for shipment to chip factories.
The situation here illustrates a little-noticed hazard that climate change is posing for agriculture in much of the world. Once harvested, crops not immediately consumed or processed are stored — sometimes for months. The warming climate is making that job harder and costlier.
The annual period with outdoor air cool enough to store potatoes in Michigan’s primary production area likely will shrink by up to 17 days by mid-century and up to a month by the late 2100s, according to an analysis by Julie Winkler, a Michigan State University geography and climate scientist.
The window for unrefrigerated storage is also narrowing for apples in the Northwest and Northeast, peanuts in the Southeast, lettuce in the Southwest and tomatoes in the Ohio valley, according to follow-up research published last year by plant physiology scientist Courtney Leisner at Auburn University. ...
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