Dr. Gary Peng, AAFC – Blackleg - University of Saskatchewan

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Summary ……continues Rotation of R genes may be a challenge –lack of diversity Quantitative R genes may be important, but poorly understood Early spray (2-4 leaf stage) with Headline/Quadris reduced blackleg 3 out 5 site-years on S cultivar. A late application (at bolting) would be less effective None of the fungicide treatments increased canola yield substantially, regardless of host resistance
Acknowledgements Technicians, graduate students, coop students at AAFC, Saskatoon/Melfort/Scott, SK; Brandon, MB; Lacombe, AB, University of Manitoba, and Alberta Innovates provided technical assistance This study is partially funded by Canola Council of Canada
Page 1 and 2: Managing blackleg of canola - poten
Page 4 and 5: Blackleg survey in Saskatchewan - 2
Page 6 and 7: I. LM race structure and dynamics P
Page 8 and 9: Perception of pathogens by plants -
Page 10 and 11: Assessment of L. maculans isolate w
Page 12 and 13: F r e q u e n c y Regional variatio
Page 14 and 15: II. R genes in canola cultivars/lin
Page 16 and 17: R genes found in 87 canola cvs/line
Page 18 and 19: III. Fungicides & application timin
Page 20 and 21: Trial locations: (2011-2014) black
Page 22 and 23: Blackleg severity on S cultivar -20
Page 24 and 25: Canola yield (bu/ac) 50 40Trial 2 3
Page 26 and 27: Fungicides did not improve the yiel

Dr. Gary Peng, AAFC – Blackleg - University of Saskatchewan

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