2022 Canola On Farm Research Program Results

2022 Trial Results

2022 Nitrogen rate trial results

Identify optimal nitrogen fertilizer rate based on return on investment and nitrogen use efficiency.

Farmer’s standard nitrogen rate compared to reduced rate (75%) and high rate (125%)

Nitrogen Rate Trial Results Summary

Site LocationNitrogen Rate Treatment and Actual Application RateYield (bushel /acre)Plant Count (plants /square foot)Nitrogen Tissue Content at BoltingNitrogen Use Efficiency (%)Moisture (%) Significant for Yield? (@95% confidence)Trial Report
Swan Valley West [2022-CNR_01]Reduced rate (75%) (90 lbs N/ac)46.8 8.36.6286No2022-CNR_01
Swan Valley West [2022-CNR_01]Standard rate (100%) (112.5 lbs N/ac)
Swan Valley West [2022-CNR_01]High rate (125%) (135 lbs N/ac)47.4 8.66.7226No2022-CNR_01
Macdonald [2022-CNR_02]Reduced rate (75%) (91.1 lbs N/ac)
Macdonald [2022-CNR_02]Standard rate (100%) (121.5 lbs N/ac)
Macdonald [2022-CNR_02]High rate (125%) (151.9 lbs N/ac)
Lorne [2022-CNR_03]Reduced rate (75%) (109 lbs N/ac)
Lorne [2022-CNR_03]Standard rate (100%) (138 lbs N/ac)
Lorne [2022-CNR_03]High rate (125%) (167 lbs N/ac)
Morris [2022-CNR_04]Reduced rate (75%) (90 lbs N/ac)54.4--5.9388.9Yes2022-CNR_04
Morris [2022-CNR_04]Standard rate (100%) (120 lbs N/ac)58.7--5.5349Yes2022-CNR_04
Morris [2022-CNR_04]High rate (125%) (150 lbs N/ac)58.9--5.9299.1Yes2022-CNR_04
Two Borders [2022-CNR_05]Reduced rate (75%) (90 lbs N/ac)38.610.25.6237.1Yes2022-CNR_05
Two Borders [2022-CNR_05]Standard rate (100%) (120 lbs N/ac)
Two Borders [2022-CNR_05]High rate (125%) (150 lbs N/ac)


2022 Seeding rate trial results

Identify economic and agronomic optimal seeding rates for Manitoba canola production and major factors influencing this relationship

Farmer’s standard seeding rate compared to reduced rate (75%) and high rate (125%)

Seeding Rate Results Summary

Site LocationSeeding Rate Treatment and Actual RateYield (bushel /acre)Spring Plant Count (plants /square foot)Emergence (%)Fall Plant Count (plants /square foot)Survival (%)Moisture (%) Significant for Yield? (@95% confidence)Trial Report
Swan Valley West [2022-CSR_01]Reduced rate (75%) (3.6 lbs seed/ac)52.95.1774.7948.7No2022-CSR_01
Swan Valley West [2022-CSR_01]Standard rate (100%) (4.8 lbs seed/ac)50.45.3605.81118.8No2022-CSR_01
Swan Valley West [2022-CSR_01]High rate (125%) (6 lbs seed/ac)53.16.3576.81088.8No2022-CSR_01
Roblin [2022-CSR_03]Reduced rate (75%) (3.8 lbs seed/ac)46.26.2------7.8No2022-CSR_03
Roblin [2022-CSR_03]Standard rate (100%) (5 lbs seed/ac)47.36.4------7.8No2022-CSR_03
Roblin [2022-CSR_03]High rate (125%) (6.2 lbs seed/ac)46.56.8------7.7No2022-CSR_03
Brokenhead [2022-CSR_04]Reduced rate (75%) (2 lbs seed/ac)55.55.11205989.2No2022-CSR_04
Brokenhead [2022-CSR_04]Standard rate (100%) (2.75 lbs seed/ac)56.15.8996.11059.2No2022-CSR_04
Brokenhead [2022-CSR_04]High rate (125%) (3.5 lbs seed/ac)57.37.4997.2999.2No2022-CSR_04
Two Borders [2022-CSR_05]Reduced rate (75%) (3.4 lbs seed/ac)43.38.71146.9808.3No2022-CSR_05
Two Borders [2022-CSR_05]Standard rate (100%) (4.6 lbs seed/ac)43.58.7858.61008.3No2022-CSR_05
Two Borders [2022-CSR_05]High rate (125%) (5.5 lbs seed/ac)45.210.8899.3868.2No2022-CSR_05


2022 Antifungal bioinoculant trial results

Determine the level of disease control and yield response of canola treated with a foliar application of KGS-3 anti-fungal bioinoculant (Paenibacillus sp.)

Untreated, KGS-3 foliar applied at approximately the four-leaf stage

Antifungal Bioinoculant Trial Results Summary

Site LocationTreatmentYield (bushel /acre)Blackleg RatingVerticillium Stripe Rating Significant for Yield? (@95% confidence) Trial ReportMoisture (%)
Woodlands [2022-CKGS_01]Untreated59.900No2022-CKGS_016.5
Woodlands [2022-CKGS_01]KGS-3 foliar applied58.900No2022-CKGS_016.4
Oakland [2022-CKGS_02]Untreated43.600No2022-CKGS_025.8
Oakland [2022-CKGS_02]KGS-3 foliar applied44.600No2022-CKGS_026.1
Louise [2022-CKGS_03]Untreated45.800No2022-CKGS_039.2
Louise [2022-CKGS_03]KGS-3 foliar applied46.100No2022-CKGS_038.9


Understanding the Results

There are two statistical tests that are used to analyze the On-Farm Research Program data:

  • Paired t-tests
  • Analysis of variance (ANOVA)

With these statistical tests, we can use a 95% confidence level to determine if our results are statistically significant. If the p-value after analysis is <0.05, then our results are statistically significant, but if it is >0.05, they are not statistically significant. 

A significant yield response (where the P-value is < 0.05) means that we are 95% sure the yield difference resulted from the treatment. Alternatively, if our statistical analysis indicates there is no significant yield difference (where the P-value is > 0.05), then we are 95% certain that the treatment had no effect on yield.

Why are there letters beside the values in the chart? The letters show which results are statistically different from each other. Example: if the yield results from each treatment for a trial all have “a” beside them, they are all statistically similar. If there is an “a” and “b”, or “a” and “ab”, etc. this is showing that there are differences between the treatment types and statistical significance.

Interpreting Results – An Example: In a canola nitrogen rate trial, let’s say we test the effect of different rates of nitrogen application (standard and high). Let’s say, for example, the average yield difference between the standard rate and high rate of nitrogen application for one trial was 1.5 bu/ac. This yield difference would be indicated as significant or not significant. If the yield difference is statistically significant, then we are 95% certain that the 1.5 bu/ac increase in yield is a result of the high rate of nitrogen treatment. But, if the 1.5 bu/ac yield difference is not significant, then the high rate had no effect on yield compared to the standard rate and the 1.5 bu/ac yield difference simply resulted from natural variability across the trial area.

MCGA does not endorse the use of products tested in the On-Farm Research Program. Contents of these research publications can only be reproduced with the permission of MCGA.
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