Sep 15, 2014
Home| Tools| Events| Blogs| Discussions Sign UpLogin

Corn in U.S. Seen by Cordonnier at Risk of Damage From Frost

August 7, 2013

Aug. 7 (Bloomberg) -- Late-sown corn in the U.S. is at risk of frost damage in the northern and northwestern Corn Belt because of delayed development, according to Michael Cordonnier, president and owner of crop analyst Soybean & Corn Advisor Inc.

Should initial frosts occur two weeks earlier than normal on Sept. 15, "we would have a big problem," he wrote in an online report today. Early frosts may leave the corn yield in the U.S., the world’s biggest producer of the grain, at 150 bushels an acre (9.42 metric tons a hectare) or less, it showed.

The Midwest is set to have near to below-normal temperatures through August’s first half that will aid corn pollination, forecaster DTN said yesterday in a report. If that pattern were to continue beyond pollination, the crop would be vulnerable to an early freeze because late planting would leave it lacking maturity, DTN said.

"If the corn crop continues to develop at a slower-than- normal pace, there will be significant risk of frost for the later-planted corn in Iowa, Wisconsin, Minnesota, South Dakota and North Dakota," Hinsdale, Illinois-based Cordonnier wrote. "Any frost during the month of September will negatively impact the corn in the above-mentioned states."

For a "killing frost" that ends the growing season, temperatures would have to fall to 27 or 28 degrees Fahrenheit (-2.8 to -2.2 degrees Celsius) for three to four hours, according to Cordonnier. Temperatures of 31 degrees Fahrenheit for a brief period would cause little damage, he wrote.


North Dakota


Corn in Iowa, the biggest U.S. growing state, was 2 percent in the dough stage as of Aug. 4, compared with an average of 21 percent normally for that date, Cordonnier wrote. For Minnesota, 2 percent was at that stage, against an average 11 percent, while the respective figures for North Dakota were 3 percent and 16 percent.

At the dough stage, which occurs about 24 to 28 days after silking, kernels have reached about half of their mature dry weight, according to the Iowa State University Agronomy Extension website. Silking is part of the pollination stage.

The "ideal situation" for corn in the northern and northwestern Corn Belt would be for the first frosts to come two weeks later than normal, the analyst wrote. That could mean a U.S. yield as high as 160 bushels an acre, he wrote.

If the first frosts were to occur Oct. 1, the average U.S. yield would be in the "mid-150 range," the report showed.

Previous 1 2 3 Next

See Comments

RELATED TOPICS: Corn, Weather, Marketing, Crops

Log In or Sign Up to comment

COMMENTS (1 Comments)

I've thinking about an early frost for a month now. My fields are still at least 2 weeks behind both corn and beans. Had a cooler July and it's cool today, 70'.
10:43 AM Aug 8th



Receive the latest news, information and commentary customized for you. Sign up to receive the AgWeb Daily eNewsletter today!.

Enter Zip Code below to view live local results:
The Home Page of Agriculture
© 2014 Farm Journal, Inc. All Rights Reserved|Web site design and development by|Site Map|Privacy Policy|Terms & Conditions