Research on the Farm (ROTF) Trial Results Archives

Spring Wheat FHB Fungicide Timing – Parkland

Madison Kostal on January 22, 2025

Background Information

Fusarium head blight (FHB) is a serious fungal disease that mainly affects wheat (including durum), barley, oats and corn
One key FHB management practice as part of an integrated management approach is timely fungicide application when the risks are high. Application timing of crop protection agents can strongly influence product effectiveness.
Trial compared producers normal timing of fungicide application to 3-5 days after the recommended timing.

Summary

Trials were conducted from 2018-2021. There was one site conducted in the interlake region. This site did not have an untreated strip and there was no significant differences between the treatments.

Superscript letters indicate significant differences

Weather

weather data based on Manitoba Agriculture weather information. % normal based on 30 year averages. Beginning April 15.

Spring Wheat FHB Fungicide Timing – Interlake

Madison Kostal on January 22, 2025

Background Information

Fusarium head blight (FHB) is a serious fungal disease that mainly affects wheat (including durum), barley, oats and corn
One key FHB management practice as part of an integrated management approach is timely fungicide application when the risks are high. Application timing of crop protection agents can strongly influence product effectiveness.
Trial compared producers normal timing of fungicide application to 3-5 days after the recommended timing.

Summary

Trials were conducted from 2018-2021. There was one site conducted in the interlake region. This site did not have an untreated strip and there was no significant differences between the treatments.

Superscript letters indicate significant differences

Weather

weather data based on Manitoba Agriculture weather information. % normal based on 30 year averages. Beginning April 15.

Spring Wheat FHB Fungicide Timing – Central

Madison Kostal on January 22, 2025

Background Information

Fusarium head blight (FHB) is a serious fungal disease that mainly affects wheat (including durum), barley, oats and corn
One key FHB management practice as part of an integrated management approach is timely fungicide application when the risks are high. Application timing of crop protection agents can strongly influence product effectiveness.
Trial compared producers normal timing of fungicide application to 3-5 days after the recommended timing.

Summary

Trials were conducted from 2018-2021. Of the 10 sites conducted in central Manitoba 4 showed significant differences among treatments. Only one of these trials showed significant differences when comparing the recommended timing and 3-5 days later.

Superscript letters indicate significant differences

Weather

Weather data based on Manitoba Agriculture weather information. % normal based on 30 year averages. Beginning April 15.

Spring Wheat FHB Fungicide Timing – Western

Madison Kostal on January 22, 2025

Background Information

Fusarium head blight (FHB) is a serious fungal disease that mainly affects wheat (including durum), barley, oats and corn
One key FHB management practice as part of an integrated management approach is timely fungicide application when the risks are high. Application timing of crop protection agents can strongly influence product effectiveness.
Trial compared producers normal timing of fungicide application to 3-5 days after the recommended timing.

Summary

Trials were conducted from 2018-2021. Of the 3 sites conducted in the western region, none showed significant differences from treated to untreated.

Superscript letters indicate significant differences

Weather

Weather data based on Manitoba Agriculture weather information. % normal based on 30 year averages. Beginning April 15.

Spring Wheat FHB Fungicide Timing – Eastern

Madison Kostal on January 22, 2025

Background Information

Fusarium head blight (FHB) is a serious fungal disease that mainly affects wheat (including durum), barley, oats and corn
One key FHB management practice as part of an integrated management approach is timely fungicide application when the risks are high. Application timing of crop protection agents can strongly influence product effectiveness.
Trial compared producers normal timing of fungicide application to 3-5 days after the recommended timing.

Summary

Trials were conducted from 2018-2021. Of the 4 sites conducted in the eastern region only 1 showed statistically significant differences among treatments, there was no difference between recommended timing and 3-5 days later. Both treatments showed significant differences compared to the untreated.

Superscript letters indicate significant differences

Weather

Weather data based on Manitoba Agriculture weather information. % normal based on 30 year averages. Beginning April 15.

Flax Fungicide Treatment- All

Madison Kostal on January 21, 2025

Background Information

Pasmo is the most influential disease of flax. It can begin as early as the vegetative stages, but more commonly occurs during seed fill.
Losses are most often a result of early-onset and disrupt seed fill. Infections occurring after seed filling is complete do not affect yield, but losses can still occur due to weakened bolls.
Application of fungicide was done at stage 8.

Summary

Fungicides registered in Manitoba for pasmo in flax are Acapela, Dyax, pyraclostrobin products (Headline/Preach/ Raclos only), and Priaxor (while available).
Both sites had a treatment of Dyax fungicide. FF01 applied Dyax at a rate of 80 ac/jug, while FF02 applied at a stronger rate of 60 ac/jug.

Neither of the two sites in this trial showed significant yield differences. FF02 has unremarkable quality data. In effect, there appears to be no impact on quality with the application of a fungicide at growth stage 8.

Spring Wheat FHB Fungicide Timing – All

Madison Kostal on December 9, 2024

Background Information

Fusarium head blight (FHB) is a serious fungal disease that mainly affects wheat (including durum), barley, oats and corn
One key FHB management practice as part of an integrated management approach is timely fungicide application when the risks are high. Application timing of crop protection agents can strongly influence product effectiveness.
Trial compared producers normal timing of fungicide application to 3-5 days after the recommended timing.

Summary

Trials were conducted from 2018-2021. Of the 19 sites conducted only 4 showed statistically significant differences among treatments, only one of these show significant differences between recommended timing and 3-5 days later.

Superscript letters indicate significant differences

Sunflower Fungicide Treatment- All

Madison Kostal on December 9, 2024

Background Information

Sclerotinia is a major disease pest affecting many crops, and farmers rely on genetics and fungicides for control.
Sclerotinia head and stem infections occur when apothecia release ascospores, which land on plant tissue.
There is concern about timing and efficacy of fungicide applications to control sclerotinia head rot in sunflower, specifically.
All fungicides were aerial-applied at R5 stage.

Summary

Fungicides registered in Manitoba for sclerotinia head rot in Sunflower are Acapela, boscalid products (Lance, used in 2024), prothioconazole products (Proline, used in 2024), and Quash. Also available for soil-applied applications is LALSTOP Contans WG.

Zero out of six sites in this trial showed significant yield differences. Disease ratings were carried out at the R9 stage (physiological maturity) at all sites. The Quash application at site SFLF06 appeared to have an impact on sclerotinia head rot infection. Both Lance and Proline appeared to have an impact on rust incidence at site SFLF01, but this difference was not statistically significant with the given data.

Corn Biological Fixing Nitrogen Products-Interlake

Madison Kostal on December 9, 2024

Background Information

Envita features the bacteria Gluconacetobacter diazotrophicus (Gd) that enables a unique mode of nitrogen fixation in corn and other crops.
After application, the bacteria start replicating and spreading through plant foliage and roots, forming a relationship with the host plant. The bacteria
fix nitrogen from the air inside the plant cells.
This provides plants with an additional source of nitrogen where and when it’s needed, supplementing the supply of nitrogen available from fertilizer treatments.

Summary

In 2023, application of Envita did not significantly improve corn yields or quality over the standard or reduced nitrogen rates in these trials. The resulting eight site years suggest that the approximate $14/ac cost of Envita is not consistently made up by an increase in grain corn yield or quality.

Weather

Corn Biological Fixing Nitrogen Products-Central

Madison Kostal on December 9, 2024

Background Information

Envita features the bacteria Gluconacetobacter diazotrophicus (Gd) that enables a unique mode of nitrogen fixation in corn and other crops.
After application, the bacteria start replicating and spreading through plant foliage and roots, forming a relationship with the host plant. The bacteria
fix nitrogen from the air inside the plant cells.
This provides plants with an additional source of nitrogen where and when it’s needed, supplementing the supply of nitrogen available from fertilizer treatments.

Summary

In 2023 and 2024, application of Envita did not significantly improve corn yields or quality over the standard or reduced nitrogen rates in these trials. The resulting eight site years suggest that the approximate $14/ac cost of Envita is not consistently made up by an increase in grain corn yield or quality.