| ||Yield results and reporting | Maturity ratings | Seed size and plant populations | Plant Breeders’ Rights | Canola | Diseases, seed treatment and seed testing | Abbreviations and rating scales | Variety tables | Sponsors of the Alberta Cereal and Oilseed Variety Testing Program | Other Variety Information
This annual publication provides information on cereal and oilseed variety performance within Alberta and northeastern British Columbia. Important agronomic characteristics and disease resistance information are provided for varieties of wheat, barley, oat, rye, triticale, flax and canola.
The Alberta Regional Variety Testing program is co-ordinated by the Alberta/British Columbia Grain Advisory Committee (ABCGAC) and Alberta Agriculture and Forestry (AAF). Funding for the program is provided by AAF, the Alberta Seed Growers’ Association, the Association of Alberta Co-op Seed Cleaning Plants and entry fees for the varieties being tested.
Data for this publication are contributed by numerous applied research associations, the Prairie Grain Development Committee, the Canola Council of Canada, CPS Canada, Agriculture and Agri-Food Canada, and AAF. Test results and updated tables are prepared, reviewed and approved by members of the ABCGAC. Sincere thanks are extended to all individuals and organizations who contribute to this publication.
Yield results and reporting
Variety choice should never be based solely on yield performance, as it is only one factor that affects net return. The genetic yield potential of a variety is often masked by numerous factors, some of which can be controlled through variety choice and others through astute agronomic management.
Producers are encouraged to consider other characteristics such as maturity, plant height, lodging and disease/pest resistance when deciding which varieties to grow. Long term satisfaction with a variety is often related to non-yield characteristics.
Exercise caution when making yield comparisons among varieties. Variety yield should only be directly compared to the standard reference check. Actual head-to-head yield comparisons between other varieties may not have occurred.
Small plot agronomic trials are expensive to grow, and new varieties are registered every year. It is simply impractical to grow all varieties at the same time. Following several years of data collection, the yield performance for a particular variety stabilizes relative to the check, and further testing is no longer required. It is for these reasons that the check varieties are grown every year (e.g. AC Barrie for CWRS wheat, AC Metcalfe for barley) and that changes to these checks are infrequent. The “Overall Station Years of Testing” column provides an indication of the unbalanced nature of the dataset.
At least six station years of yield data collected over two years are required prior to reporting the figures in this publication. For new varieties, Overall Yield is often the first indication of yield potential relative to the check. As additional data become available, yield performance is also expressed on the basis of environmental productivity (Yield Test Categories of Low, Medium, High and Very High).
Yield rankings among varieties can change substantially due to growing conditions. To reflect these differences, results from a test site that produced high yield in a particular year are placed into the database for “high” yielding environments. The same site may contribute to the “low” yield category in a drought year, when yields are low.
Consistent performance over all Yield Test Categories indicates that a variety has environmental responses similar to the check and may have good yield stability over a wide range of environments. Scientific studies conducted on variety performance in western Canada have shown that Yield Test Category analysis provides a more reliable indication of yield performance than results organized by geographic region.
The yield comparison tables have several features:
Yields that are statistically higher (+) or lower (-) than the check are indicated to aid in the selection process. No symbol after the yield figure indicates that there is no statistical difference from the check.
- Overall actual yield of the check (bushels/acre) based on all data available to the testing program is provided along with the number of station years of testing.
- The range in yield for each Yield Test Category is defined.
- Actual yield of the check in each Yield Test Category is reported.
- For varieties with sufficient data, the Overall Yield and performance in each Yield Test Category is expressed relative to the check.
- Significant statistical differences relative to the check are indicated.
Pay particular attention to data on new varieties that have not been fully tested. If a large difference from the check is reported but is not significant, it could mean that yields have varied widely, and/or there are not enough data to prove a statistical difference. With additional years of testing, the reported yield differences will become more accurate.
To make effective use of the yield comparison tables, producers should set a realistic yield target for the season and determine where it fits within the Low, Medium, High and Very High Yield Test Categories. This approach facilitates matching of variety choice to expected productivity levels and is similar to that used when making decisions on other levels of inputs.
Please note that the actual yield levels indicated are from small plot trials, which may be 15 to 20 per cent higher than yields expected under commercial production.
As is the case for yield, growing conditions have a tremendous influence on the date of maturity. For example, a variety of CWRS wheat may mature in 98 days in Lethbridge, but take 103 days to mature in Edmonton. In the same way, a two-day difference in maturity between varieties in southern Alberta may amount to a five-day difference in a more northerly location.
To take this factor into account, maturity is expressed using a five-category scale: Very Early, Early, Medium, Late and Very Late. To aid producers with this relative scale, the average number of days to maturity for the check is reported. Note that this scale is different for each crop type. For example, an early barley variety will mature much earlier than an early flax variety.
Seed size and plant populations
Seed size within a crop kind will vary from variety to variety, requiring the adjustment of seeding volumes to achieve desired plant populations. Some of the tables provide an average 1,000 kernel weight (TKW), which can be used as a guide for variety differences. The best approach is to determine the 1,000 kernel weight of the seed to be planted, germination rate, emergence mortality and in the case of fall seeded crops, an estimate of winterkill.
For more information and user-friendly seeding rate calculators that take into account these and other considerations, please see the web page.
Plant Breeders’ Rights
Plant Breeders’ Rights (PBR) are a form of intellectual property rights by which plant breeders can protect new varieties in the same way an inventor protects a new invention with a patent. In 2015, Canada amended the PBR Act to bring it into conformity with UPOV 91. Varieties protected under the previous legislation (UPOV 78) are indicated with the logo, whereas those protected under the new legislation that are shown with a new logo. The use of the ▲ logo indicates that PBR has been applied for. Visit the Plant Breeders’ Rights website,or the Canadian Food Inspection Agency website for more information.
The Alberta/British Columbia Cereal and Oilseed Advisory Committee (ABCGAC) does not take any responsibility for accuracy or validity of the canola performance data.
Diseases, seed treatment and seed testing
Laboratories participating in the FHB testing program:
- Disease ratings are compiled from various data sources in Alberta and other prairie provinces.
- Treat rye and flax seed to control seedling blight; cereal seed for smuts and fusarium; canola seed to control flea beetle, seedling blight and the seed-borne phase of virulent blackleg.
- Wheat with Moderately Susceptible (MS) or Susceptible (S) ratings for common bunt should be treated with a systemic fungicide as low levels of infection will restrict marketability.
- Refer to labels for maximum storage periods of treated seed.
- Treated seed must not be fed to livestock, poultry or wildlife and cannot be sold for feed.
- Leaf spot ratings in the wheat tables are a combination of resistance to tan spot and septoria leaf disease complex.
- Fusarium head blight (FHB), caused by Fusarium graminearum and other species, is an increasing problem in Alberta. The relative ranking of crops from most susceptible to least susceptible is durum wheat, common wheat, triticale, barley and oat. Corn is a host of F. graminearum and can serve as a source of infection when residue is left on the ground. FHB infection is highly influenced by the environment and heading date. A resistant (R) tolerance rating for FHB does not equate to immunity. Under severe epidemics, all varieties will sustain damage. All seed should be tested for the presence of FHB and treated with an appropriate seed treatment if required. Producers are advised to choose varieties with the best FHB tolerance whenever possible and always use best management practices to slow the spread of this disease.
- Seed used in the Alberta Regional Variety Testing program comes with a “fusarium-free” certificate, and trials are inspected for FHB during the growing season.
Abbreviations and rating scales
- 20/20 Seed Labs Ltd., Nisku, AB: 1-877-420-2099
- BioVision Seed Research Ltd., Edmonton, AB: 1-800-952-5407
- BioVision Seed Research Ltd., Grande Prairie, AB: 1-877-532-8889
- Parkland Laboratories, Red Deer, AB: 403-342-0404
- Precision Seed Testing, Beaverlodge, AB: 780-354-2259
- Seed Check Technologies Inc., Leduc, AB: 780-980-8324
- TSW = Thousand seed weight.
- XX = Insufficient data to describe.
- Maturity: VE = Very Early, E = Early, M = Medium, L = Late, VL = Very Late.
- Resistance Ratings: VP = Very Poor, P = Poor, F = Fair, G = Good, VG = Very Good, EX = Excellent.
- Disease Tolerance Ratings: R = Resistant, MR = Moderately Resistant, I = Intermediate, MS = Moderately Susceptible, S = Susceptible.
- Kernel Type (winter wheat): HR = Hard Red, SR = Soft Red, HW = Hard White, SW = Soft White.
- Awns (wheat): Y = Yes (bearded), N = No (awnless).
- Awn Type (barley): R = Rough, S = Smooth, SS = Semi-smooth.
- Seed Size (flax): S = Small, M = Medium, L = Large.
For further information and variety tables, download Agri-Facts: Varieties of Cereal and Oilseed Crops for Alberta (Agdex 100-32) – 622K PDF.
Sponsors of the Alberta Cereal and Oilseed Variety Testing Program
Agricultural Research and Extension Council of Alberta (ARECA)
Agriculture and Agri-Food Canada
Alberta Agriculture and Forestry
Alberta Barley Commission
Alberta Seed Growers Association
Alberta Winter Wheat Producers’ Commission
Alliance Seed Corporation
Association of Alberta Cooperative Seed Cleaning Plants
Battle River Research Group
British Columbia Grain Producers Association
Chinook Applied Research Association
Columbia Seed Co. Ltd.
CPS Canada Inc.
Gateway Research Organization
La Coop fédérée
Lakeland Agricultural Research Association
Lindholm Seed Farm
Mackenzie Applied Research Association
Monsanto Canada Inc.
Peace Agriculture Research and Demonstration Association
Pioneer Hi-Bred Production
Quarry Seed Ltd.
Riddell Seed Co.
Smoky Applied Research and Demonstration Association
Syngenta Seeds Canada
University of Alberta
University of Saskatchewan
Other Variety Information
For additional information, including varieties not listed in this publication, please call the Alberta Ag-Info Centre toll-free at 310-FARM (3276), or check the Alberta Agriculture and Forestry website.
Factsheet information and tables prepared, reviewed and approved by:
Alberta/British Columbia Grain Advisory Committee
Data preparation and factsheet co-ordination by:
Co-ordinator RVT/Crop Research Technologist
Alberta Agriculture and Forestry
Source: Agdex 100/32. February 2016.