Amanda Shine,  J.A. Torrion, Simon Fordyce, Pat Carr

Link to Canola Variety Trial Printable PDF

Objective:

To evaluate the performance of selected spring canola varieties in northwestern Montana

Summary:

Seventeen different varieties of spring canola were planted on April 29, 2019 managed under dryland conditions (Table 1). Damage due to vegetative consumption by deer was extensive in the early part of the season (prior to flowering, primarily) and may have contributed to high variability in yields.  There was no lodging and minimal shattering in the trial.

NWARC was the second-highest producing dryland site in the statewide trial, after Havre, with an average yield of 1,898 lb/A.  Although CP930RR had the highest average yield across all six study sites (2,131 lb/A), in Kalispell it fell close to average value of 1,981 lb/A. Variety 4187RR had the highest yield in Kalispell (2,520 lb/A) and 16MH6004 had the lowest (1,616 lb/A) shown in Table 2. The 16MH6004 also had the lowest average yield across all study sites in the state.

The tallest variety was CS2300 (60.8 in.) and the shortest was 16MH6001 at 47.2 in.  Average height across the trial was 52.2 in.  Test weights were relatively consistent among all varieties, with an average of 48.7 lb/bu.  16MH6001 had the highest test weight (49.8 lb/bu), and  16CH4181 had the lowest, at 47.3 lb/bu. CP930RR had the highest oil content of 51.1% and NCC101S had the lowest (47.0 %).  Average oil content across all varieties was 48.8%.

Table 1. Management Information

Seeding date: 4/29/2019 Field Location: Y4
Julian date: 119 Harvest date: 9/12/2019
Seeding rate: 12 plants/ft2 Julian date: 255
Previous crop: Spring wheat Soil type: Silt loam
Herbicide: Roundup Power Max: 6/5 Tillage: conventional
Insecticide: None Soil residual nutrient  
    (NO3-1, P, K lb/A): 106-12-262
Fungicide: None Nutrient fertilizer applied  
    ( N, P2O5, K20 lb/A): 50-35-35
 

 

 

Table 2. Agronomic performance of the canola varieties

Cultivar Herbicide Yield* TWT OIL FLDT   Height  
   Lodging  
   SHTTR  
  Resistance lbs/A lb/bu % Julian in % %
4187RR RR 2520.2 48.1 49.4 177.2 55.8 1 2
InVigor L234P LL 2493.2 47.4 47.8 179.2 54 1 2
InVigor L255P LL 2424.2 49.1 50.6 180.8 54 1 2
InVigor L233P LL 2318.2 48 48.4 177 52.8 1 2
CS2300 RR 2231.5 48.3 49.3 178.2 60.8 1 2
6090RR RR 2111.5 48.1 48.6 177 59.5 1 2
16MH6001 CL 2070.8 49.8 47.5 177 47.2 1 2
DKTF91SC TruFlex RR 2000 49 49.6 171.5 47.5 1 2
CP930RR RR 1981 48.2 51.1 173 50.5 1 2
DKTF92SC TruFlex RR 1965.3 49.4 48.5 172 49.5 1 2
NCC101S Conventional 1964.8 49.3 47 169 48 1 2
CS2100 RR 1947.2 49.1 48.8 175.5 52.8 1 2
5545CL CL 1914 49.7 48.1 177 53.8 1 2
CP955RR RR 1847.8 48.6 50.3 176 50.8 1 2
16CH4181 Conventional 1737.2 47.3 49.1 175.5 51.2 1 2
CS2500 CL CL 1646.5 49 48.4 175.5 52.8 1 2
16MH6004 CL 1615.8 49.7 47.9 176.5 47.5 1 2
Mean   2047.6 48.7 48.8 175.8 52.2 1 2
LSD   NS** 0.4 1.3 2.6 4.5    
CV%   18.1 0.5 1.7 1 6.1    
Pr>F   0.0194 <0.001 <0.001 <0.001 <0.001    
 

*Yield adjusted to 8.5% moisture

 

 

 

 

 

**Fisher's protected LSD not significant when CV% > 15 (yield only)

TWT= test weight, FLDT=flowering date, SHTTR= % pod shattering