Integrated Pest Management

Spore threshold for sclerotinia stem rot risk

Science Edition 2023—Frequent occurrence during the flowering period of a minimum of 0.0001 nanograms of S. sclerotiorum DNA per petal or per cubic metre per hour combined with relative humidity over 80 per cent and cooler temperatures are expected to result in a disease incidence greater than 10 to 15 per cent. In this situation, fungicide is...
Read More
Integrated Pest Management

Sclerotinia spore sensor gets a patent

Science Edition 2023—InnoTech researchers have patented an automatic field unit that can count Sclerotinia sclerotiorum spores over a set period of time. They deployed six units in 2022 and are troubleshooting mechanical issues, mostly to do with the system’s internal clock and power supply. “Development of a biosensor for sclerotinia stem rot disease forecasting in canola,” Xiujie...
Read More
Integrated Pest Management

Seed treatments protect susceptible cultivars from blackleg

Science Edition 2023—Fluopyram, Saltro and Bion seed treatments look promising against early blackleg infection, however none of these seed treatments has shown significant additional efficacy on any of the resistant canola cultivars tested under field conditions. “Exploring novel seed-treatment options to mitigate the impact of blackleg on canola,” Gary Peng, AAFC Saskatoon SaskCanola Peng G, Liu X,...
Read More
Integrated Pest Management

Monitoring blackleg races to inform R gene development

Science Edition 2023—The avirulence profile of L. maculans population on the Prairies remained relatively stable from 2017 to 2021; only AvrLep1 increased noticeably. Even so, the current pathogen population is still highly diverse. Researchers should continue monitoring the pathogen population for early detection of resistance erosion to specific R genes, especially when new R genes are being...
Read More
Integrated Pest Management

Advancing blackleg and verticillium stripe management

Science Edition 2023—

Researchers laid the ground work for a rating system based on quantitative resistance to blackleg, specified the critical infection window for blackleg, and investigated connections between flea beetles and blackleg and verticillium stripe and blackleg.

Read More