2006 Official Coded Variety Trials

November 2006

Dear Crystal Sugarbeet Grower:

View Trial Procedures

View Official Trial Location Sites

The 2006 official coded variety performance trials conducted by American Crystal included 17 sites. Thanks to the dedicated Technical Services staff involved in official trial plot care, harvest, and analysis. Emergence problems and wind damage affected several sites. Aphanomyces and Cercospora were less common in 2006. The 2006 data has been combined with 2005 and 2004 data, and results are enclosed.

The format of this report has been modified due to the increased incidence of Rhizomania. Data has been combined by Rhizomania severity as well as combining two non-disease sites. Two of the four non-disease sites (Cavalier and Casselton) and two of the nine Rhizomania sites (Climax and Angus) were lost due to stand problems. Commercial trials for all three years were planted to stand (5.1 inch). Rhizomania, Aphanomyces, and semi commercial trials were planted to stand at 4.5 inch. Revenue calculations in 2006 were based on a hypothetical $40.38 payment at 17.5% sugar and 1.5% SLM and do not consider hauling costs. Results from the Rhizomania sites were good to excellent. Yield losses with susceptible commercial checks ranged from light to severe in the Rhizomania trials. Fusarium evaluation was conducted at two Minnesota sites. These results and additional information for individual growing sites are available on the World Wide Web at www.crystalsugar.com. More detailed information will be printed later in the Sugarbeet Research and Extension Reports (www.sbreb.org).

Click here to open a pdf file with the following trials information:

  • List of varieties approved for sale to Crystal growers.
  • Multi-year performance of specialty Rhizomania approved varieties under various disease levels.
  • Three-year performance of Aphanomyces specialty approved varieties.
  • Two-year performance of all Rhizomania varieties from Rhizomania sites.
  • Two-year performance of all approved varieties (full market, test market & specialty) from non-disease sites.
  • Three-year, all districts, performance of approved varieties (non-disease sites).
  • Trial sites, disease observations and agronomic info from all trial locations.

Herbicide resistant varieties developed using biotechnology (GMO) will not be allowed to be sold, given away, distributed, or planted in year 2007. Data for biotech entries are not included since they are not approved for sale.

Before purchasing seed, please check to make sure the varieties you are buying are on the current approval list. In accordance with the grower contract, the cooperative has the option to refuse to purchase beets of a non-approved variety. If you have questions, please contact the Crystal Technical Services Center or your Agriculture Department.

Download Trials in Excel format (Grower Mailing - 3 year data)

Links to 2006 data only follow:


William S. Niehaus
Official Trial Manager