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Canned, Frozen Corn Industry Struggling Across US Growing Regions

Canned, Frozen Corn Industry Struggling Across US Growing Regions


For those whose primary experience with corn is the butter-drenched cob variety, it might come as a surprise that other forms of sweet corn are in trouble. A new University of Illinois Urbana-Champaign analysis shows sweet corn production for frozen and canned products has been steadily shrinking in the U.S. over the past 27 years, particularly in rainfed portions of the Midwest.

"The processing sweet corn industry [corn grown for canned and frozen products] was thriving in the U.S. throughout the 20th century. This type of production, as opposed to fresh-market corn on the cob, makes up the majority of sweet corn acres in the U.S. To see such success in a crop and then signs of struggle in recent decades is a disturbing trend," said senior study author Marty Williams, USDA-Agricultural Research Service (ARS) ecologist and affiliate professor in the Department of Crop Sciences, part of the College of Agricultural, Consumer and Environmental Sciences (ACES) at U. of I.

Williams and co-author Daljeet Dhaliwal obtained proprietary data from major vegetable processing companies who kept records for 20,000 processing sweet corn fields between 1992 and 2018. They split the data into five distinct production areas, reflecting the major water management practices in each: Illinois irrigated, Illinois rainfed, Minnesota rainfed, Washington irrigated, and Wisconsin irrigated. From there, they analyzed trends in planting acres, green ear mass (yield), hybrid lifespan, and more.

"We saw a decline in acreage throughout production areas in the Midwest and Pacific Northwest, the regions where most processing sweet corn production is happening. The one area that bucked the trend and showed an increase in green ear mass was in irrigated fields of Wisconsin. The steepest declines were in rainfed locations here in the Midwest, particularly Illinois," said Williams, who is with the ARS Global Change and Photosynthesis Research unit, located on the university's Urbana campus.

Compared with irrigation, rainfed production is inherently more variable and, according to the data, increasingly risky for sweet corn production in parts of the Midwest. Williams said wide swings in precipitation, particularly drought at key growth stages, almost always show up in yield. That's what seems to be happening in Illinois rainfed systems, where the data showed a precipitous drop in green ear mass in recent years.

Although the analysis was designed to illustrate long-term trends, not causes, Williams and Dhaliwal recently found a strong relationship between extreme temperatures and sweet corn yield loss, implicating climate change. Another cause for the shrinking sweet corn production area is consumer preference, as more Americans are choosing fresh produce over canned products.

 

Source: phys.org

Photo Credit: gettyimages-mysticenergy

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