Hot, dry weather contributing to uneven corn emergence

decrease font size  Resize text   increase font size       Printer-friendly version of this article Printer-friendly version of this article

Corn growers finding marginal stands in their corn fields might be seeing the effects of record rainfall in 2011, a mild winter in 2012 and continued hot, dry weather - all of which potentially are contributing to problems with corn emergence.

Multiple northern Ohio cornfields have had fair to poor stands, according to Steve Prochaska, an Ohio State University Extension educator in north-central Ohio, and member of the university's Agronomic Crops Team. Stands in those fields ranged from 14,000 to greater than 28,000 plants per acre, he said, noting that the losses are variable and are likely related to the record rainfall last year, combined with the mild winter and early, hot spring the region has experienced in recent months.

“Surface crusting and soil compaction were evident in the fields, as well as soil compaction zone about 2 to 4 inches from the surface,” Prochaska said. “Likewise, corn seminal roots of emerged plants were observed growing laterally along the top of the compaction zone. This may have been exacerbated by the early planting some growers did in the first week of April.

"Corn has been slow to emerge. In some cases it has taken as long as three weeks, and was exposed to the wet weather conditions.”

The problem is that the hot, dry weather has created some of the soil crusting conditions that makes it hard for emerging corn to get out of the ground, said Peter Thomison, an OSU Extension agronomist. The heat is also causing uneven growth and even some mortality.

“It’s a big topic among growers,” Thomison said. “The hot dry weather has had a significant effect, not only in Ohio but in other states including Iowa and Illinois, where poor root development has caused floppy corn where corn has fallen over.”

Prochaska said other possible factors contributing to corn stand loss include:

  • Limited rotations without wheat or forage and in some cases multiple-year soybeans now followed by corn.
  • Organic matter of soils in some areas of the fields was less than 2 percent with a corresponding low cation exchange capacity, or CEC, which may be more prone to crusting and compaction.
  • Use of pop-up fertilizer applied on corn seed at planting.
  • Herbicide injury. Products containing cell growth inhibitors may, under certain environmental conditions, injure corn seedlings.
  • Insect injury from a number of insects including wireworms, seed corn maggots and grubs. All have the ability to reduce plant stands.
  • Corn seedling diseases caused by various pathogens.
  • Malfunctioning corn planter over seedling depth and fertilizer delivery.

Buyers Guide

Doyle Equipment Manufacturing Co.
Doyle Equipment Manufacturing prides themselves as being “The King of the Rotary’s” with their Direct Drive Rotary Blend Systems. With numerous setup possibilities and sizes, ranging from a  more...
A.J. Sackett Sons & Company
Sackett Blend Towers feature the H.I.M, High Intensity Mixer, the next generation of blending and coating technology which supports Precision Fertilizer Blending®. Its unique design allows  more...
R&R Manufacturing Inc.
The R&R Minuteman Blend System is the original proven performer. Fast, precise blending with a compact foot print. Significantly lower horsepower requirement. Low inload height with large  more...
Junge Control Inc.
Junge Control Inc. creates state-of-the-art product blending and measuring solutions that allow you to totally maximize operating efficiency with amazing accuracy and repeatability, superior  more...
Yargus Manufacturing
The flagship blending system for the Layco product line is the fully automated Layco DW System™. The advanced technology of the Layco DW (Declining Weight) system results in a blending  more...
Yargus Manufacturing
The LAYCOTE™ Automated Coating System provides a new level of coating accuracy for a stand-alone coating system or for coating (impregnating) in an automated blending system. The unique  more...
John Deere
The DN345 Drawn Dry Spreader can carry more than 12 tons of fertilizer and 17.5 tons of lime. Designed to operate at field speeds up to 20 MPH with full loads and the G4 spreader uniformly  more...
Force Unlimited
The Pro-Force is a multi-purpose spreader with a wider apron and steeper sides. Our Pro-Force has the most aggressive 30” spinner on the market, and is capable of spreading higher rates of  more...
BBI Spreaders
MagnaSpread 2 & MagnaSpread 3 — With BBI’s patented multi-bin technology, these spreaders operate multiple hoppers guided by independent, variable-rate technology. These models are built on  more...

Comments (1) Leave a comment 

e-Mail (required)


characters left

Chgo suburbs  |  June, 05, 2012 at 09:46 AM

Just another attempt to drive up prices. Everyone crying wolf at the same time is getting very old. 1 pct profit is better then 40 pct loss so take the 1 pct like the rraises that big bussiness is giving their employees while taking in 20 40 pct profits .

Pacesetter Grain Hopper

The Pacesetter Gain Hopper features original and innovative ideas like the patented RollerTrap™, the industry’s easiest to open and maintain trap ... Read More

View all Products in this segment

View All Buyers Guides

Feedback Form
Feedback Form