Source: Crop Watch News Service
University of Nebraska-Lincoln Extension, Institute of Agriculture and Natural Resources
http://cropwatch.unl.edu/archives/2006/Crop18/wheatselection.htm

Variety selection is one of the most important yield-affecting practices you can control in your wheat production system. Because there is no single perfect variety, using a portfolio of diversified varieties enables you to offset the potential weaknesses (production limitations) found in each variety with the strengths of others. The use of more than one variety improves the opportunity for yield stability and profitability of your entire wheat production system. The number of varieties you grow or the number of acres to be planted to each variety will depend entirely on your production conditions and special needs. There are five simple steps in using the variety portfolio strategy.

1. Identify your workhorse varieties. These are the varieties now being grown on a majority of your acres with a reliable and proven record of performance over time. 

2. Enhance production needs and limits. Select varieties that have useful characteristics needed for your specific production practices, soil conditions, and offer the best protection from diseases and other yield limiting factors common to your growing area.

3. Utilize a range of maturities. Select varieties that mature earlier or later than your workhorse variety, because some years may favor early varieties and some may favor later varieties. A spread of maturities also will allow you to stagger your harvest and take maximum advantage of your equipment and reduce potential losses to weathering, shattering, etc.

4. Identify different genetics. Select varieties that share 50% or less similar parentage to your workhorse variety and each other. Varieties with similar genetic backgrounds can often be susceptible to the same disease and production risks.

5. Study varietal trial information. Review variety trial information from UNL and surrounding states for areas similar to yours. Select a variety based upon two or more years performance data which could replace an older variety. Plant a limited scale trial on your farm. Newer varieties have better disease resistance packages and higher yield potential. Results of 2006 UNL variety trials for wheat are available online at varietytest.unl.edu The printed Extension circular of results should be available in August.

Steve Knox
Secretary-Manager
Nebraska Crop Improvement Association

Source: Crop Watch News Service
University of Nebraska-Lincoln Extension, Institute of Agriculture and Natural Resources