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Regional Silage Variety Trials: 4. Pea-Cereal Mixtures

Trial Site: Fairview Research Farm

Research Coordinator: Dr. Akim Omokanye

From: Peace Country Beef & Forage Association 2017 Annual Report

Planting and growing two crops simultaneously on the same field, particularly growing of legumes with cereals, is known to offer scope for developing energy-efficient cropping systems and sustainable agriculture. Peas are usually included in mixes to improve the quality of the feed. Pea silage could be 13-18% protein so theoretically a pea/cereal mix should have higher protein than a cereal silage alone, which is usually about 10% protein. In reality however, the potential protein benefits of peas in silage mixtures often are not attained because of the competitive effects of the cereal crop. Pea/cereal mixtures can produce better quality silage than cereals alone, but the success of these intercrops is highly dependent on the seeding rates for both crops, and making sure there are enough peas in the mixture to influence feed quality (for more information, please visit$department/deptdocs.nsf/all/faq8444). In addition to the report presented here, results from this site and other parts of the province for the pea-cereal mixtures will also be reported in the Alberta Seed Guide (


To compare the performance of intercropping spring oats, barley and triticale with pea varieties for forage yield and feed quality for beef cattle production


  • Project Site: Fairview Research Farm (NW5-82-3W6) on RR #35, MD of Fairview.

  • Previous crop: Alfalfa for over 10 years before spraying out in 2016 (chemical fallow)

  • Site soil information (0-6” depth): Soil tests done at Exova laboratory (Edmonton) prior to seeding showed pH = 5.8 and soil organic matter = 7.0 %.

  • The field was cultivated (disked and harrowed) before seeding.

  • Experimental Design: Randomized complete block design in 4 replications