Stalk lodging and ear drop impact corn yields

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


The heavy rains and strong winds (plus snow in some areas) forecast this week increased the potential for stalk lodging and ear drop, which could impact yields and slow grain harvest.

The loss of one "normal" sized ear per 100 feet of row translates into a loss of more than one bushel/acre. An average harvest loss of 2 kernels per square foot is about 1 bu/acre. According to an OSU agricultural engineering study, most harvest losses occur at the gathering unit with 80 percent of the machine loss caused by corn never getting into the combine.

In the past, European corn borer (ECB) tunneling through ear shanks played a major role in causing ear drop. The widespread planting of Bt ECB resistant hybrids has minimized this problem. Reports of ear drop this year have been associated with drought stress and specific hybrid genetics. Drought stress and high temperature conditions resulted in premature ear shank deterioration that promoted ear drop. Certain hybrids are more susceptible to ear drop under such stress. In an OSU research study conducted at 10 locations in 2011 and 2012 involving a comparison of three hybrids, we observed no ear drop in 2011, whereas in 2012 year ear drop was readily evident in one of the three hybrids at all locations.

In order to minimize ear drop losses in problem fields, some seed companies are recommending that farmers run their corn head as high as possible while adjusting ground and header speed for maximum ear retention. Operating the corn header higher than normal may reduce the loss of ears flying out of the header during harvest.

Fields exhibiting ear drop and stalk lodging should be harvested promptly. The presence of ear drop and stalk lodging probably outweigh economic benefits of field drying. By late October to early November, field dry‑down rates will usually drop to 1/4 - 1/2% per day and by mid-November, probably 0 ‑ 1/4% per day. By late November, drying rates will be negligible.


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...

Related Articles

No matching related articles at this time.



Comments (0) Leave a comment 

Name
e-Mail (required)
Location

Comment:

characters left


AFS software

With the Case IH AFS software, you can view, edit, manage, analyze and utilize your precision farming data. Designed to ... Read More

View all Products in this segment

View All Buyers Guides

Feedback Form
Feedback Form