b"silageperformance trialsexperimental standards were excluded. The per cent of useable datasoft dough, BBCH 85. Wheat-triticale silage trials are harvested from the 2023 barley silage trials was 67 per cent, oat silage trialswhen 75 per cent of the wheat varieties are at early to soft dough, was 67 per cent, and the combined wheat and triticale silage trialsBBCH 83-85, and the triticale varieties are at late milk, BBCH 77. was 83 per cent. Overall, 72 per cent of the 2023 regional varietyOat silage trials are harvested when 75 per cent of the varieties are trial silage data was useable for inclusion in the January 2024 tableat milk stage, BBCH 75. However, the 2023 trials contained oat publication. varieties with a wide range of development, with some locations showing a week or more difference in growth stages. This results in ARVAC Silage Subcommitteesome of the later maturing varieties having lower yield and altered The ARVAC silage subcommittee consists of representatives fromquality. the seed industry, producer groups, university and government. The ARVAC silage subcommittee members and experts who guidedYield Data Presentationthe 2023 field season were: Yield data should only be compared with the check variety. YieldVern Baron, Agriculture and Agri-Food Canada of the check variety is expressed as wet tons/ac adjusted to 65 perHari Poudel, Agriculture and Agri-Food Canada cent moisture. It should also be noted that yields are from small plotKarin Schmid, Alberta Beef trials, which can be higher than yields expected under commercialJake Bueckert, Alberta Cattle Feeders production.Stacey Meunier, Alberta Cattle Feeders Similar to the cereal grain tables, silage yield data is onlyGezinus Martens, Alberta Milk presented if there are six site-years of data in a yield category.Monica Klaas, Alberta Seed Processorssecretary Beginning in 2023, irrigated and dryland experimental sitesRob MacDonald, Alliance Seed were run. Due to limited amounts of irrigated data, only overallBrian Kennedy, Canterra provincial yield will be presented until sufficient data is availableMichelle Beaith, FP Genetics to populate both dryland and irrigated yield columns. Yield dataMazen Aljarrah, Olds CollegeField Crop Developmentfrom fewer than six site-years can be very misleading which is whyCentre the change has been made to only present yield data where is thereYadeta Kabeta, Olds CollegeField Crop Development Centre are at least six site-years of data, from several sites, to represent theTrent Whiting, SeCanchair potential of a variety.Jeff Jackson, SeedNet Sheri Strydhorst, silage regional variety trial coordinator Nutritional Analysis Dick Puurveen, University of Alberta Nutritional data is presented on a dry matter basis (per cent DM),Greg Penner, University of Saskatchewannutritional cropand was tested on forage intended for silage, not ensiled samples.coordinator Nutrition information was assessed using NIRS at Murphy Sincere thanks are extended to all individuals and organizationsAnalytical. Nutritional data is presented on a dry matter basis who contribute to this publication.for the following parameters: CP = Crude Protein; ADF = Acid Detergent Fibre, NDF = Neutral Detergent Fibre, TDN = Total Trial Information Digestible Nutrient; CHOs = Carbohydrates; Ca = Calcium; P = There were 15 barley, seven oat,Phosphorous; K = Potassium; Mg = Magnesium. Prior to 2023 a five wheat and one triticalelimited number of nutritional parameters were tested; varieties in entry in the 2023 silage varietythe tests prior to 2023 dont have a full complement of nutritional trials. The barley and oat weredata, indicated by NT = Not Tested. seeded to achieve 28 plantsIt's important to test silage prior to feeding, for its actual per square foot; wheat wasnutritional content, as growing conditions and growth stage at seeded to reach 33 plants perharvest can have significant impacts on feed value. Nutritional square foot and triticale wasdata presented here are for the purpose of variety comparison seeded to achieve 35 plantsinformation rather than feed calculations.per square foot. Fertilizer was applied based on soil test recommendation to meet optimal silage yield goals in the various trial regions. Barley silage trials are harvested when 75 per cent of the barley varieties are at 100seed.ab.ca"