2007 Official Coded Variety Trials

November 2007

Dear Crystal Sugarbeet Grower:

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The 2007 official coded variety performance trials conducted by American Crystal included 14 RRV sites with 10 yield trial sites. Emergence problems and water damage affected several sites. Aphanomyces was more prevalent in 2007. The 2007 data has been combined with previous years' data, and results are enclosed.

The format of this report has been modified due to the first time approval of RR (Roundup Ready ®) sugar beets for 2008 planting. RR varieties have yield data from ten sites in 2007 and one site in 2006. Data has been combined for trials with light Rhizomania and for trials with moderate to severe Rhizomania. One site (Hillsboro) in 2007 was lost due to crusting and stand problems. Commercial, Aphanomyces and biotech trials were planted to stand at 4.5 inch spacing. Revenue calculations in 2007 were based on a hypothetical $41.97 payment at 17.5% sugar and 1.5% SLM and do not consider hauling costs. Results from the Official Variety Trials sites were good to excellent. Yield losses with susceptible commercial checks ranged from light to moderate in the Official Variety Trials. Fusarium evaluation was conducted at two Minnesota sites. Disease nursery data was expanded to include Aphanomyces ratings from one RRV site (Kindred) plus Shakopee and a Moorhead Rhizoctonia nursery was added along with the established Ft Collins site. Cercospora ratings were expanded to Michigan in addition to the established nursery at Rosemount. 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:

  1. List of varieties approved for sale to Crystal growers.
  2. Multi-year performance of non-biotech Rhizomania varieties under various disease levels.
  3. Multi-year performance of non-biotech Rhizomania varieties under various disease levels.
  4. One-year performance of Rhizomania varieties (including Roundup Ready®) under various disease levels.
  5. One and two-year performance of Rhizomania varieties (including Roundup Ready®) with Rhizoctonia ratings.
  6. Performance of Aphanomyces specialty approved varieties.
  7. Two and three-year performance of non-Rhizomania varieties.
  8. Two-year performance of Roundup Ready® varieties (one site in 2006).
  9. Trial sites, disease observations and agronomic info from all trial locations.

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

Links to 2007 data only follow:

Thanks are extended to the dedicated Technical Services staff involved in official trial plot care, harvest, and analysis.

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. 

Sincerely,

William S. Niehaus
Official Trial Manager