Cold rain right after planting causes problems

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

It may be too early to think about replanting corn yet, but it’s a good time to look at guides from University of Missouri Extension or seed dealers, said MU Extension agronomy specialist Bill Wiebold.

The MU Extension guide “Corn and Soybean Replant Decisions” (G4091) gives a step-by-step procedure for estimating dollar gain or loss from replanting. Producers face tough choices on whether planting date and weather conditions call for replanting. The guide “takes the emotion” out of the decision, Wiebold said.

“It’s too early to worry about stands yet,” Wiebold said, but the guide helps producers make fact-based decisions when and if the time comes this year.

Seeds that lie in the ground more than 28 days raise concerns about emergence, insects and disease.

Stand density reduces after emergence due to cool weather and disease. The guide gives procedures for measuring sparse stands, and explains that the cost of replanting might exceed the value of the additional yield. Accurate estimates of seed cost, fuel, machinery, labor, pesticide and additional costs should be considered.

The guide gives tables for anticipated yields based on planting dates for both corn and soybean.

Cold water immediately after planting causes low emergence, Wiebold said. Seeds contain 6-8 percent moisture when they go into the ground, then they rehydrate with moisture from the soil. At low temperatures, the hydration process can rupture seed cell membranes. Cell contents can then leak out and become a food source for invading pathogens, leading to death or injury of the seed.

Damage during seed imbibition can knock out 90 percent of the stand. Additionally, emerging seedlings encounter conditions such as crusting. No-till conditions typically have lower soil temperatures and greater soil moisture.

Declines in yield potential due to late planting do not occur much until mid-May, according to Wiebold’s four-year study at MU Bradford Research Center.

The guide is available as a free PDF download at

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 (0) Leave a comment 

e-Mail (required)


characters left

Declining Weigh Blending System

Ranco Declining Weigh (DW) is the standard in fertilizer blending because of the speed and accuracy of the blending process. ... Read More

View all Products in this segment

View All Buyers Guides

Feedback Form
Feedback Form