Stats in on 2023 winter cereal varieties

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Reading Time: 3 minutes

Published: September 12, 2023

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photo: Manitoba Agriculture

Yield results from the 2023 Manitoba Crop Variety Evaluation Team fall rye and winter wheat testing locations are available to help producers with variety selection. In addition to yield, agronomic and disease-resistance information is shown in the variety description tables below.

Things to consider

Comparing yields: Data provided in the yield comparison tables below helps to make comparisons between varieties at each site. Use the statistical information provided in the grey-shaded area at the bottom of the table to see if differences between varieties are significant. To know if yield differences mean something, look at the significant difference (Sig Diff) for each site, indicated as ‘yes/no.’ If ‘yes,’ then yield differences between varieties indicate real differences. When a site has shown significant difference, the least significant difference (LSD) value is also shown. This indicates the number of bushels per acre (bu./acre) that varieties must differ by to be considered significantly different.

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Comparing long-term yields: Yields at a single site in a single year can be a poor indicator of how the variety may perform in your field in 2024. Look at long-term yield data or yields collected over many years and locations to get a better indication of performance over a variety of environmental conditions. When choosing a new variety, it is a good idea to look at past Seed Manitoba guides to see how consistently a variety performs across years and locations.

Agronomic and disease resistance: Yield is important, but other characteristics like maturity, height, standability, winter hardiness and disease resistance are also critical to maximizing yield potential and quality.

Winter wheat variety descriptions. FOOTNOTES: (1) Maturity ratings: E = Early, M = Medium and L = Late. Varieties plus 2 to 4 days compared to CDC Falcon would be Medium (M) maturing. Varieties greater than 4 days compared to CDC Falcon would be rated as Late (L) maturing.
(2) All registered varieties have similar (good) winter hardiness if seeded at the optimum date into standing stubble where good snow cover can be assured. For the newer varieties, there is limited information currently available. As these varieties are grown on more acres, a better understanding of relative winter hardiness will follow.
(3) FHB infection is highly influenced by genetics, environment and heading date. Under high levels of disease pressure, all varieties will experience yield and/or quality loss.
~ Indicates a variety that is protected by Plant Breeder’s Rights legislation that complies with UPOV 1978.
` Indicates a variety that is protected by, or has been applied for and is pending, Plant Breeder’s Rights legislation that complies with UPOV 1991.
Fall rye variety descriptions.

Seed Manitoba 2024

Seed Manitoba 2024 will be available in early December. The guide will provide the 2023 small plot, replicated and unbiased information on post-registration variety performance of many crop types in Manitoba. Seed Manitoba is a collaborative effort between the Manitoba Seed Growers’ Association, Manitoba Agriculture, and the Manitoba Co-operator.

Anne Kirk is Manitoba Agriculture’s cereal crop specialist. Contributors to the early release
of this data include MCVET co-ordinator Chami Amarasinghe, University of Manitoba wheat breeder Curt McCartney, Agriculture and Agri-Food Canada plant pathologist Brent McCallum, as well as MCVET site contractors and funding agencies.

Winter wheat yield comparisons.
Fall rye yield comparisons. FOOTNOTES: (1) Maturity ratings: Hazlet reaches maturity in approximately 219 days.
All varieties are susceptible to ergot. Current testing does not suitably differentiate varietal differences from other factors such as weather, crop development stage, inoculum load and management.
NT = Not tested
~ Indicates a variety that is protected by Plant Breeder’s Rights legislation that complies with UPOV 1978.
` Indicates a variety that is protected by, or has been applied for and is pending, Plant Breeder’s Rights legislation that complies with UPOV 1991.

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