2024年萨斯喀彻温省油菜籽病害概况：见解和影响.pdf

1、2024 overview of canola diseases in Saskatchewan:Insights and implicationsAlireza Akhavan,PhDProvincial Specialist,Plant DiseaseSaskatchewan Ministry of Agriculture306-787-4671,alireza.akhavangov.sk.caContributorsProvincial Specialists,Crops Extension Specialists and Crop Protection Laboratory(Saska

2、tchewan Ministry of Agriculture);SARM Plant Health Technical Advisors(Saskatchewan Association of Rural Municipalities);SaskOilseeds,SCIC,Discovery Seed Laboratoryand surveyors from Meadow Lake Co-op,Bayer Crop Science Inc.,Nutrien,Canola Council of Canada and volunteer agrologists and producersGene

3、ral Canola Disease Survey-208 FieldsVerticillium Stripe Specific Survey(After Harvest)-104 FieldsClubroot Monitoring Program-482 Fields2024 SASKATCHEWAN CANOLA DISEASE SURVEYS2024 GENERAL CANOLA DISEASE SURVEY 208 canola crops were surveyed Survey completed between August 01 and September 27th 20 pl

4、ants from each of 5 sites along a W-pattern Fields are surveyed with producer permission Prevalence Incidence of disease Severity for some diseasesSclerotinia Stem Rot Sclerotinia sclerotiorum No known asexual spore stage Development of epidemics is dependent on the environmental conditionscanolacou

5、ncil.orgSigns and symptomsSclerotinia stem rot symptoms10SCLEROTINIA STEM ROT Prevalence:56%of crops surveyed in SK in 2024 had at least trace levels of sclerotinia stem rot Incidence:9%across all surveyed fields 16%in infected fields Severity:0.24 across all surveyed fields 0.43 in infected fields1

6、6PrevalenceIncidence(all fields surveyed)Severity(scale of 0-5-all fields surveyed)Alberta(408)(assessed lower main stem only)14%0.9%Not CollectedSaskatchewan(208)56%9%0.24Manitoba(138)57%5%1.7Sclerotinia Stem RotSclerotinia Incidence in Saskatchewan(1999-2024)Sclerotinia Incidence in Alberta(2016 2