2018 Official Coded Variety Trials

2018 Official Coded Variety Trials

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Variety Selector

The Variety Selector is intended to assist growers in selecting appropriate seed varieties by identifying varieties with characteristics that are known to be consistent with the information provided by the grower.

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Results from the Official Variety Trials sites were good to excellent. Stands in the trials were generally very good this year. Ten sites were used for variety approval calculations. One site was abandoned due to erratic emergence (Humbolt) and two were used for Aphanomyces Specialty (Climax and Georgetown). Rhizoctonia was prevalent in 2018 and showed an increase from 2017 in yield trials. Seed treatments and two applications of Quadris were used to control Rhizoctonia. Based upon susceptible plot observations, root aphids were present in low levels at nine (9) sites. Preliminary root aphid evaluations are in progress, but seed companies may know tolerance levels of their varieties. Revenue calculations in 2018 are based on a hypothetical $46.40 payment (5-year rolling average) at 17.5% sugar and 1.5% SLM not considering hauling or production costs.

Fusarium ratings are from two Moorhead sites. The Rhizoctonia ratings are from the RRV and Michigan with the USDA. The Aphanomyces ratings are from the RRV and Shakopee. The Cercospora data is from Foxhome, MN; Randolph, MN; and Michigan USDA.

The 2018 data has been combined with the previous years’ data, and results are enclosed. Bolter data is presented in plants per acre based upon 45,000 plants per acre. Results for the yield trials from individual sites are available on the internet.

Fifteen conventional varieties are approved for sale in 2019 based upon one year of data. Three conventional varieties were previously approved and have data from previous years in the 2012 Sugarbeet Research and Extension Report and 2012 Official Variety Trial Report.

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). Additional data including individual yield trial results and agronomic procedures are also on the ACSC web site.

Click here to open a pdf file with the following 2018 Grower Info: 

  1. List of varieties approved for sale to ACSC growers
  2. Multi-year performance of RR varieties from all sites
  3. Performance of RR varieties under Aphanomyces conditions
  4. Performance of conventional varieties from six sites in 2018
  5. Disease ratings for all nurseries (varieties tested in 2018)
  6. Trial sites, disease observations and agronomic information from all trial locations
  7. Seed treatments applied to seed used in the official coded variety trials

    Download 2018 Grower Info in Excel Format 

Links to 2018 data only follow:

Specific RR & Conventional Trials – pdf
Specific RR & Conventional Trials – Excel
All Yield and Disease Trials - pdf
All Yield and Disease Trials - Excel 

Plot Procedures
Yield trials were planted to stand at 4.5 inches. Plots were planted crosswise (90°) to the cooperators’ normal farming operations, where possible. Plot row lengths for all official trials were maintained at 46 feet with about 39 feet harvested. Planting was performed with a 12-row SRES vacuum planter. The GPS controlled planter gave good single seed spacing which facilitated emergence counting. Seed companies had the option of treating seed with Tachigaren, insecticide and a Rhizoctonia seed treatment fungicide. Emergence counts were taken on 24 feet of each plot. Multiple seedlings were counted as a single plant if they emerged less than one inch apart. The stands in all yield trials were refined by removing doubles (multiple seedlings less than 1.5 inch apart) by hand but were not further reduced.

Roundup Powermax with Event and full rates of fungicides were applied using a pickup sprayer driven down the alleys. Hand weeding was used where necessary. The micro rate program was used on conventional trials. All yield trials were treated with Quadris in a band during the 2 leaf (9 oz) and 6-10 leaf stage (14 oz) for Rhizoctonia control. Treatments used for Cercospora control in 2018 included Inspire XT/Penncozeb, Agri Tin/Incognito, Proline/Penncozeb, and Headline/Agri Tin. Ground spraying was conducted by ACSC technical staff.

RR varieties with commercial seed were planted in four-row, six replication trials. The RR experimental entries were planted in smaller two-row, four replication trials. Two applications of Roundup were made in the 4-6 (32 oz) and 8 – 12 (22 oz) leaf stages.

All plot rows were measured for total length after approximately 3.5 feet at each end were removed at the end of August, with skips greater than 60 inches being measured for adjustment purposes. Harvest was performed with two modified four-row harvesters (4310 and 4310A John Deere). All harvested beets of each plot were used for yield determination while one sample (approx 25 lbs) for sugar and impurity analysis was obtained from each plot. Quality analysis was performed at the ACSC Technical Services quality lab in Moorhead.

Varieties were planted in disease nurseries in North Dakota, Minnesota and Michigan to evaluate varieties for disease tolerance.

ACSC adjusts the Cercospora, Aphanomyces, Rhizoctonia and Fusarium nursery data each year to provide a consistent target for variety approval criteria.

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