Malatya Haber Wild weather will mean lower corn and soybean yields
Home News Livestock Crops Markets Hay, Range & Pasture Home & Family Classifieds Resources This Week's Journal
Commerical Hay Equipment For The Farm
Agro-Culture Liquid Fertilizer

Farm Survey

Journal Getaways

Reader Comment:
by Eliza Winters

"I think that the new emission standards are a great move. I think that the"....Read the story...
Join other discussions.

Wild weather will mean lower corn and soybean yields

Most of 2013 has been much wetter and cooler than 2012, but heading into fall Missouri is experiencing heat and dryness that, coupled with earlier weather, could hurt corn and soybean yields.

Bill Wiebold, a University of Missouri Extension crop specialist, says it’s almost a tale of two states within Missouri.

“We have pretty wet conditions, or have had until recently, in the southern part of the state with floods and that kind of damage,” Wiebold says. “And then we’ve had really dry conditions when you go from Highway 36 to the Iowa border. It has really been very dry—dry enough that we’re going to have low yields because of that.”

Even though grain filling is nearing its end, the plants are still sensitive, says Wiebold, who is also a professor of agronomy in the MU College of Agriculture, Food and Natural Resources.

“As dry as it is, I think we’re going to have corn actually dying because of the dry conditions rather than normal maturity,” he says. “When plants die too soon, of course, they have smaller grain and lower test weights.”

The wet spring that delayed planting of corn and beans and the cooler conditions that prevailed much of the year are also concerns. Temperatures in July were about 2 degrees lower than normal and August temperatures averaged almost 3 degrees below normal.

Wiebold says that with the cool weather there have been fewer growing degree days than in a normal year. Growing degree days are an accumulation of heat units that determines the development rate for plants from emergence to maturity.

“It will delay maturity in corn,” Wiebold says. “Not so much in soybeans because in addition to temperature it is affected by the photoperiod, or length of day. So I think soybeans will mature relatively normally, although there is no doubt that late-planted soybeans almost always yield less than ones planted normally.”

While most crops were planted late, a broad range of maturities were planted this year, Wiebold says.

“Some corn was planted early before it started raining and that has moved through relatively quickly,” he says. “Other fields were delayed amazingly late this year, so we’ve got fields that are probably a month behind in terms of their maturity.”

Despite the lateness of the crop, there isn’t much concern about frost damage. But farmers should expect lower yields.

“I think there are lots of things that are weather-related that are combining to say that probably our yield this year is going to be less than normal,” Wiebold says. “This will be the fourth year in a row we’ve had below trend line yields in Missouri.”

Date: 9/23/2013


Copyright 1995-2014.  High Plains Publishers, Inc.  All rights reserved.  Any republishing of these pages, including electronic reproduction of the editorial archives or classified advertising, is strictly prohibited. If you have questions or comments you can reach us at
High Plains Journal 1500 E. Wyatt Earp Blvd., P.O. Box 760, Dodge City, KS 67801 or call 1-800-452-7171. Email:


Archives Search

NCBA Convention

United Sorghum Checkoff Program

Inside Futures

Editorial Archives

Browse Archives