Integrated strategies for fusarium head blight management in spring wheat in Manitoba
Collaborating LocationsAAFC Morden
A total of 63 combinations of management practices in spring wheat were evaluated, and positive and negative interactions between practices were identified. These results should be treated as preliminary, and trends must be supported with additional years and sites of data.
- Evaluate impact of seed rate, variety selection and fungicide timing for FHB management.
- In this study there were significant fungicide timing and variety effects on FHB Index. There was a significant interaction between fungicide timing, seeding rate and variety.
- Overall, plots treated with fungicide at Anthesis/ Early Milk (F7) had lower FHB index than the unsprayed control, independent from the seeding rate.
- Plots seeded with Glenn showed the lowest FHB index at 23 plants/ft2. However, when plots were seeded at 30 and 38 plants/ft2 there were not significant differences between Glenn and AAC Brandon with the lowest FHB index and highest yields.
- There is a significant interaction between fungicide timing and variety on FHB index
- There is a significant interaction between seeding rate, fungicide timing and variety on FHB index. Trends showed an increased reduction in FHB index compared to the untreated control with fungicide application at anthesis/early milk as seeding rates increased.
- Fungicide at early leaf/heading showed the lowest leaf spot disease
- Plots treated with fungicide had higher yield compared to unsprayed control.
NOTE: all of these takeaways should be treated as preliminary and should be supported with further site years of data.