Yields of new varieties of ag crops continue to increase

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


Research into varieties of winter wheat, spring barley, potatoes grown for starch and sugar beet, which have been introduced in the Netherlands by plant breeding companies between 1980 and 2010 shows that new varieties continue to yield more than their predecessors.

Despite recent concerns that important crops in high-yielding regions have reached their production maximum, the rise in yield potential of new cultivars does not yet level off. The fact that plant breeding can still lead to increases in production has therefore been shown by this research at Wageningen University.

Businesses, consultants and scientists sometimes ask themselves whether plant breeders are still able to raise the yield of crops such as winter wheat and potatoes today. More and more articles published in international reviews imply that production is barely increasing in countries where it is already high. The idea prevails as trees cannot continue to grow until they reach the sky, there must obviously be a yield ceiling. Scientists at Wageningen University decided to study this deeper.

The yield of a crop depends on the genetic characteristics of the variety, soil, climate, and crop management. The scientists analysed official tests on varieties that were carried out between 1980 and 2010. A statistical technique allowed them to separate the influence of weather, CO2 levels and crop management from the effect of the introduction of new varieties. This showed that new varieties introduced between 1980 and 2010 on average all had a higher yield than previous breeds. This applied to winter wheat, spring barley, potatoes grown for starch, and sugar beets, as well as, to a lesser extent, to ware potatoes. Over the period under review, the yield of the breeds of winter wheat and spring barley appearing in the market for the first time increased by around one per cent per year.

Bert Rijk, researcher at the chair group "Plant Production Systems" at Wageningen University, coordinated the study. "The most striking finding was that the yield increase by breeding does not yet level off," Rijk states. "New varieties are better than their predecessors to the same extent today as they were in the early Eighties."

In other words, plant breeding still ensures an increase in maximum yield. But actual yields of farmers do in some cases seem to grow less fast or even stagnate. In other words, it is becoming more difficult to exploit the full potential of new varieties. This means that the so-called yield gap between the potential and actual yield is growing. The question remains as to whether this is due to changing climate, soil quality, modified crop management, or a combination of these factors.


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 

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