The American Crystal Sugar Company trial program is a critical part of our efforts to deliver reliable, quality sugar to the world. Our seed selection process begins with detailed, high-quality data backed with real-world growing experience.
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 Trial sites were good overall. Planting dates were two weeks later than typical but stands in the trials were good at most locations. Nine sites were used for variety approval calculations. One site (East Grand Forks) was lost from wind damage that occurred in mid-June. Buxton and Climax sites were very dry for much of the growing season including at harvest. Beets were small and data at these sites were compromised by excess harvest loss. The Perley site had severe Aphanomyces and high variability. Rhizoctonia crown and root rot was minimal in 2022. Revenue calculations in 2022 are based on a hypothetical $46.80 payment (5-year rolling average) at 17.5% sugar and 1.5% SLM not considering hauling or production costs.
Fusarium ratings are from sites at Moorhead and Sabin, MN. Rhizoctonia crown and root rot ratings are from nurseries at Crookston and Moorhead, MN and Saginaw, MI (BSDF). Aphanomyces root rot ratings are from naturally infested nurseries at Perley, Glyndon (Magno Seed), and Shakopee (KWS), MN. The Climax Aphanomyces site had no Aphanomyces disease pressure. Although the Perley site had high levels of Aphanomyces root rot, non-uniformity across the commercial trial resulted in high variability, so there are no yield results under Aphanomyces conditions for 2022. Cercospora leafspot ratings are from inoculated nurseries at Foxhome and Randolph (KWS), MN and Saginaw, MI (BSDF). Data from all three sites was highly correlated with ratings from a non-inoculated leafspot nursery at Averill, MN. Root aphid ratings are from a greenhouse assay at Shakopee, MN (KWS) and ratings are expected at a later date from a field trial at Longmont, CO (Magno Seed).
2022 harvest conditions were good overall, and beets dug well at most locations. Soil moisture levels varied from dry to wet depending on the location. Dry conditions along with small beets at Buxton and Climax resulted in excess harvest loss leading to high variability. The Alvarado site was challenging and slow-going due to wet, heavy soil.
The 2022 data have been combined with previous years’ data and results are enclosed. Bolter data is presented as the number of bolters observed at a location for each variety.
Results for the yield trials from individual sites are available on the internet.
Conventional trials were not planted in the 2022 OVT trials. Conventional varieties that were approved for 2020-2022 sales are permitted to continue in 2023 sales.
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 available 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.
Links to 2022 data only follow:
Yield trials were planted to stand at 4.5 inches. Starter fertilizer (10-34-0) was applied in-furrow (3 GPA in 6 GPA total volume) in all yield trials. 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 40 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 an Aphanomyces seed treatment, 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 3 with Event (surfactant) and full rates of fungicides were applied using a pickup sprayer driven down the alleys. Two applications of Roundup (26 oz) were made at the 4-6 and 8-12 leaf stages. Hand weeding was used where necessary. All yield trials were treated with AZteroid in-furrow at planting (5.7 oz) and Quadris in a band during the 6-10 leaf stage (14 oz) for Rhizoctonia control. Treatments used for Cercospora control in 2022 included Inspire XT/Manzate, Agri Tin/Incognito, Proline/Manzate, and Priaxor/Agri Tin. Ground spraying was conducted by ACSC technical staff using 20 GPA and 75-80 psi.
Roundup Ready varieties with commercial seed were planted in four-row plots with six replicates. The RR experimental entries were planted in two-row plots with four replicates.
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 one custom six-row harvester (Big Red) with increased cleaning capacity. All harvested beets of each plot were used for yield determination while one sample (approximately 25 lbs) was obtained from each plot for sugar and impurity analysis. Quality analysis was performed at the ACSC Technical Services quality lab in Moorhead.
Varieties were planted in nurseries in Minnesota, Michigan, and Colorado to evaluate varieties for disease and insect susceptibility. 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.