Full-season hybrids still better than early hybrids

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


Growers across the Corn Belt are either anxiously waiting to get into their fields or are in the early stages of planting their 2013 corn crop. If cool, wet weather continues, planting will be delayed for many growers and prompt questions about switching to earlier season hybrids.

Long-term research studies from DuPont Pioneer and several universities show that adapted, full-season corn hybrids usually offer the best yield and profit advantage when planting delays are not extreme.

“The cool, wet weather this spring is causing planting delays in many areas, leaving growers questioning whether they need to make hybrid maturity switches,” said Mark Jeschke, DuPont Pioneer agronomy research manager. “It is important to weigh your decision carefully. If you switch to a shorter season hybrid too soon, you are giving up higher yield potential and profits.”

According to Jeschke, hybrid changes should be based on expected grower returns including yield, drying costs and test weight discounts. Early hybrids should be used under extreme late-plant or replant situations.

Full-season hybrids typically make full use of a growing season. Even when planted late, these hybrids often outperform early maturing hybrids, adjusting their growth and development to reach maturity in a shortened growing season.

Long-term studies by both Pioneer and universities which included a range of hybrid maturities across planting dates extending from April through June have shown a clear yield and profit advantage for full-season hybrids.

“If growers have questions about switching, including replacement hybrid availability, they should consult their sales professional,” said Jeschke.

University research shows that full-season hybrids adjust to late planting with a reduction in their growing degree unit (GDU) requirement of up to six units per day of planting delay. For example, hybrids planted May 20 may require 150 fewer heat units to reach maturity than the same hybrids planted April 25. This adjustment reduces the risk of fall frost damage to these hybrids.

Pioneer studies across several years reinforce the university findings. Pioneer focused on hybrids planted across the central, north-central, north and far-north regions of the Corn Belt. Hybrids were planted from early April to mid-June and grouped into full, medium and early maturities at each location. Several hybrids were included in each maturity group so that true maturity responses could be measured, rather than just specific hybrid responses. The studies looked at differences in corn grain yield response to planting date, as well as moisture, test weight and gross income response. The data provides growers more relevant planting information for the different regions in which they farm.

For example, in the central Corn Belt, results indicate that early to mid-April planting is best for the greatest corn yield potential. Full-season hybrids—hybrids with a comparative relative maturity (CRM) of 111 to 115—yield better and produce better grain at harvest than early maturity hybrids. Growers should not consider switching full-season hybrids to earlier CRM hybrids until the last week of May.

Soil conditions permitting, April planting also is recommended in the north-central Corn Belt. Growers are encouraged to plant full-season hybrids (103 to 110 CRM) until the last week of May in this region.

Maturity planning is most critical in northernmost states because of the risk of cool weather or early frost. Pioneer recommends producers in northern Corn Belt areas (central Minnesota and north-central Wisconsin) to stick with full-season hybrids (98-105 CRM) until approximately May 27.  This recommendation also carries into far-northern areas (northern Minnesota, North Dakota and Quebec, Canada) for hybrids that are full-season there (97-100 CRM).

Growers with questions about specific hybrid characteristics and environmental effects should talk to their seed sales professionals.


 


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



Comments (0) Leave a comment 

Name
e-Mail (required)
Location

Comment:

characters left


OptRx crop sensors

Features & Options: Increase yield potential by applying the ideal amount of nitrogen to corn or wheat based on crop ... Read More

View all Products in this segment

View All Buyers Guides

Feedback Form
Feedback Form