Effect of Seeding Rate and Seed Size on Lentil Diseases, Weeds, Yields, and Profitability

  • Lentils
  • Disease Management
  • Pulse Science Cluster
  • Seeding
  • University of Saskatchewan

Lead Investigator(s)

Dr. Steven Shirtliffe

Lead Investigator(s) Institution

University of Saskatchewan - Dept. of Soil Sciences


To determine the interaction of disease control methods (fungicide) with seeding rate in different lentil seed size classes on plant diseases and yield in lentil. To determine the effect of seeding rate (plant population) in different seed size classes of lentil. To determine the effect of seeding rate (plant population) and row spacing on seed yield and plant disease in lentil.


Researchers determined that the seeding rate of small red lentils should be increased to near 200 seeds per square metre under standard disease management practices (one fungicide application). CDC Maxim reached a max yield at approximately double the recommended seeding rate. For other lentil classes the seeding rate recommendation of 140 is adequate. Under aggressive fungicide application practices (two applications), most lentil classes will have a greater yield with a seeding rate of 200 seeds per square metre. Often lentil yields decrease when grown in row widths less than 30 cm. Further economic analysis of the full dataset will determine the economic optimum practices.

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SPG Contribution


Project Status


Duration/Timeline of Project (Year to Year)

2013 - 2017


Western Grain Research Foundation, Agriculture and Agri-Food Canada

Total Project Cost