Development of a blackleg yield loss model and assessment of fungicide resistance in Western Canadian populations of Leptosphaeria maculans

Key Result

This project was able to develop the first yield loss model for blackleg of canola for Western Canada.

Project Summary

The objectives of this study are to:

  1. develop a yield loss model to relate the severity of blackleg on canola with the corresponding yield losses.
  2. evaluate representative populations of L. maculans from Western Canada for the occurrence of fungicide resistance.

Overview:

By studying relationships between blackleg disease severity and yield loss and the fungicide sensitivity of Leptosphaeria maculans populations from Western Canada, this project was able to develop the first yield loss model for blackleg of canola for Western Canada. This model can provide a foundation for understanding the yield impact associated with certain levels of blackleg, not only on a field scale, but also on local or even regional scales.

Note: This study was one of many making up the ‘Canola Disease Management Tools for the Prairies – Blackleg and Sclerotinia’ project that was led by SaskCanola in partnership with industry and funded under the Agri-Science Project (ASP) within the Growing Forward 2 Program.