Objective:
To evaluate the performance of selected winter canola varieties in northwestern Montana
Personnel:
Clint Beiermann, Jessica Pavelka
Michael Stamm - KSU
Summary:
Twenty varieties of winter canola were planted on August 23rd, 2021. Irrigation was utilized in 2021 to establish a stand. Canola only received rainfed moisture in 2022 until harvest on August 16th, 2022 (Table 1). There were 8.9” of rainfall during the 2022 growing period (Apr-Aug).
The average yield was 46.84 bu/A with the lowest at 39.7 bu/A for KSR4839S and the highest yield being 55.6 bu/A from KSU103 (Figure 1). The average maturity height was 48.15 inches, but there was no significant difference in heights between varieties. The average spring stand was 6.1 plants/ft2, with the highest stand at 8.3 plants/ft2 from KSR4925 and the lowest stand at 2.8 plants/ft2 from KSU102, which also had the second highest yield.
Winter survival averaged 78.35%, the highest survival rate was 88.3% for KSR4854S, while the lowest was 67.3% for TFW104. There was minimal lodging across varieties, however the highest percentage was 15% for TFW103, which also had the highest yield. Generally low amounts of lodging overall.
Table 1. Management information |
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|---|---|---|---|
| Seeding date: | 8/23/2021 | Field Location: | Y7 |
| Julian date: | 235 | Harvest date: | 8/16/2022 |
| Seeding rate: | NA | Julian date: | 228 |
| Previous crop: | Fallow | Soil type: | Silty Clay Loam |
| Herbicide: | None | Tillage: | Conventional |
| Insecticide: | Lambda-CY 5/24/22 |
Soil residual nutrient (NO3-1, P, K lb/A): |
167-12-143-72S |
| Fungicide: | None |
Nutrient fertilizer applied (N, P2O5, K20 lb/A): |
Applied Spring 2022 100-42-37-20S |
Table 2. Agronomic performance of canola varieties |
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|---|---|---|---|---|---|---|
| Variety/Line | Spring Stand | Winter Survival | FLWR | LOD | HT | YLD |
| (plt/ft2) | (%) | (julian) | (%) | (in) | (bu/A) | |
| KSU103 | 5.6 | 74.0 | 146 | 15.0 | 50.3 | 55.6 |
| KSU102 | 2.8 | 70.0 | 146 | 1.7 | 49.7 | 53.0 |
| KSU104 | 3.6 | 67.3 | 146 | 0.0 | 49.7 | 51.3 |
| KSU107D | 4.9 | 77.0 | 144 | 0.0 | 41.7 | 49.0 |
| KSR4854S | 7.3 | 88.3 | 146 | 1.7 | 49.3 | 49.0 |
| KSR4927S | 5.3 | 80.0 | 146 | 1.7 | 46.3 | 48.3 |
| KSR4925 | 8.3 | 75.0 | 149 | 0.0 | 46.3 | 48.1 |
| CP320WRR | 5.6 | 86.3 | 146 | 0.0 | 45.0 | 47.3 |
| KSR4767 | 6.9 | 77.3 | 146 | 0.0 | 51.3 | 47.2 |
| KSR4848 | 6.7 | 80.7 | 146 | 1.7 | 50.3 | 46.6 |
| KSR4837 | 6.6 | 75.0 | 147 | 0.0 | 48.0 | 46.2 |
| KSR4928 | 6.2 | 79.3 | 148 | 0.0 | 55.0 | 46.0 |
| KSR4852S | 5.6 | 83.0 | 146 | 0.0 | 46.0 | 45.9 |
| KSR4926S | 7.0 | 77.3 | 146 | 1.7 | 45.0 | 45.2 |
| CP225WRR | 6.8 | 84.7 | 146 | 1.7 | 45.3 | 44.9 |
| KSR4966S | 7.1 | 76.0 | 146 | 5.3 | 49.0 | 44.3 |
| KSR4846 | 5.1 | 75.7 | 146 | 3.3 | 45.3 | 44.2 |
| KSR4850 | 7.0 | 85.0 | 146 | 1.7 | 47.0 | 43.4 |
| KSR4967 | 5.8 | 72.7 | 146 | 0.0 | 50.3 | 41.6 |
| KSR4839S | 7.7 | 82.3 | 146 | 1.7 | 52.0 | 39.7 |
| Mean | 6.10 | 78.40 | 146 | 1.90 | 48.20 | 46.80 |
| CV | 22.20 | 6.20 | 0.70 | 224.00 | 9.00 | 7.30 |
| LSD | 2.20 | 8.00 | 1.60 | 6.90 | 7.10 | 5.70 |
| PR>F | 0.003 | <.001 | <.001 | 0.035 | 0.123 | <.001 |
| Bolding denotes equal value to highest or earliest value within a column based on LSD(0.05) | ||||||
| FLWR = flowering, HT = height, YLD = yield, LOD = lodging | ||||||