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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 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%)46.8 a8.3a6.6a28a6aNo2022-CNR_01
Swan Valley West [2022-CNR_01]Standard rate (100%)46.7 a7.9a6.6a25b5.9aNo2022-CNR_01
Swan Valley West [2022-CNR_01]High rate (125%)47.4 a8.6a6.7a22c6aNo2022-CNR_01
Macdonald [2022-CNR_02]Reduced rate (75%)54.6a7.4a4.5b37a6.8aNo2022-CNR_02
Macdonald [2022-CNR_02]Standard rate (100%)53.2a6.3a5.0a30b6.8aNo2022-CNR_02
Macdonald [2022-CNR_02]High rate (125%)54.5a6.2a4.8ab26c6.8aNo2022-CNR_02
Lorne [2022-CNR_03]Reduced rate (75%)38.6a8.3a8.3a21a9aNo2022-CNR_03
Lorne [2022-CNR_03]Standard rate (100%)40.6a7.7a7.7a18b9aNo2022-CNR_03
Lorne [2022-CNR_03]High rate (125%)42.9a7.4a7.4a16c9aNo2022-CNR_03
Morris [2022-CNR_04]Reduced rate (75%)54.4b--5.9ab38a8.9aYes2022-CNR_04
Morris [2022-CNR_04]Standard rate (100%)58.7a--5.5b34b9aYes2022-CNR_04
Morris [2022-CNR_04]High rate (125%)58.9a--5.9a29c9.1aYes2022-CNR_04
Two Borders [2022-CNR_05]Reduced rate (75%)38.6b10.2a5.6ab23a7.1abYes2022-CNR_05
Two Borders [2022-CNR_05]Standard rate (100%)40.8ab9.1a5.8a21b7.1bYes2022-CNR_05
Two Borders [2022-CNR_05]High rate (125%)42.9a8.9a5.3b19b7.4aYes2022-CNR_05

 

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 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%)52.9ab5.1b77a4.7c94a8.7aNo2022-CSR_01
Swan Valley West [2022-CSR_01]Standard rate (100%)50.4b5.3ab60b5.8b111a8.8aNo2022-CSR_01
Swan Valley West [2022-CSR_01]High rate (125%)53.1a6.3a57b6.8a108a8.8aNo2022-CSR_01
Roblin [2022-CSR_03]Reduced rate (75%)46.2a6.2a------7.8aNo2022-CSR_03
Roblin [2022-CSR_03]Standard rate (100%)47.3a6.4a------7.8aNo2022-CSR_03
Roblin [2022-CSR_03]High rate (125%)46.5a6.8a------7.7aNo2022-CSR_03
Brokenhead [2022-CSR_04]Reduced rate (75%)55.5a5.1b120a5c98a9.2aNo2022-CSR_04
Brokenhead [2022-CSR_04]Standard rate (100%)56.1a5.8b99b6.1b105a9.2aNo2022-CSR_04
Brokenhead [2022-CSR_04]High rate (125%)57.3a7.4a99b7.2a99a9.2aNo2022-CSR_04
Two Borders [2022-CSR_05]Reduced rate (75%)43.3a8.7b114a6.9b80b8.3aNo2022-CSR_05
Two Borders [2022-CSR_05]Standard rate (100%)43.5a8.7b85b8.6a100a8.3aNo2022-CSR_05
Two Borders [2022-CSR_05]High rate (125%)45.2a10.8a89b9.3a86ab8.2aNo2022-CSR_05

 

2022 Anti-fungal 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

Anti-Fungal Bioinoculant Trial Results Summary

Site LocationTreatmentYield (bushel /acre)Blackleg RatingVerticillium Stripe Rating Significant for Yield? (@95% confidence) Trial ReportMoisture (%)
Woodlands [2022-CKGS_01]Untreated59.9a00No2022-CKGS_016.5a
Woodlands [2022-CKGS_01]KGS-3 foliar applied58.9a00No2022-CKGS_016.4a
Oakland [2022-CKGS_02]Untreated43.6a00No2022-CKGS_025.8a
Oakland [2022-CKGS_02]KGS-3 foliar applied44.6a00No2022-CKGS_026.1a
Louise [2022-CKGS_03]Untreated45.8a00No2022-CKGS_039.2a
Louise [2022-CKGS_03]KGS-3 foliar applied46.1a00No2022-CKGS_038.9a

 

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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