Objective:

To evaluate canola varieties for agronomic performance in environments and cropping systems representative of northwestern Montana.

Results:

Twenty-five cultivars were evaluated using a randomized complete block with four replications. Seeding rate was determined using the following equation: (10 plants/sqft X 9.6 X thousand kernel weight)/ 80% survival. Significant differences were observed in flowering date, plant height, percent lodging, yield, percent oil, and test weight. Flowering date averaged 180 days (June 28) and spanned a 4 day period that ranged from 177 to 181 days. Plant height averaged 52.1 inches and ranged from 45.7 inches for Arriba to 57.8 inches for InVigor 5440. Lodging averaged 25.2% ranging from 2.8% for C1516 to 55.0% for Arriba. Yields averaged 41.5 bu/A and ranged from 25.0 bu/A for Arriba to 56.6 bu/A for HyClass 972. Oil content averaged 49.3%, ranging from 46.1% for NCH13G046 to 50.9% for HyClass 970. Test weights averaged 49.4 lb/bu and ranged from 47.7 lb/bu for C5522 to 51.1 lb/bu for NCH13G046.

Summary:

HyClass 972 was the highest yielding variety and had an oil content of 49.6 percent. Based on the LSD value for yield, 3 varieties (InVigor L130, InVigor L140P, and G49720) were statistically equivalent to the highest yielding variety, HyClass 972.

Table 1. Materials and Methods

Seeding Date: 5/3/2016 Harvest Date: 9/14/2016
Julian Date: 124 Julian Date: 258
Seeding Rate: 10 plnt/sqft 6" rows Soil Type: Creston SiL
Previous Crop: Barley Soil Test:  116-22-250-46
Tillage: Conventional Fertilizer: 125-30-30-20
Herbicide: PPI: Trust 2 pt/A Insecticide: Warrior II 1.92 fl oz/A
Herbicide: Post: Stinger 1/3/pt/A Fungicide: Endura 6 oz/A

Table 2. Agronomic data from the statewide canola variety trial, Kalispell, MT - 2016

Cultivar Herbicide System PLNT sqft FLWR Julian HT in. LOD % SHTTR % YLD bu/A1 OIL %1 TWT lb/bu1
HyClass 972 RR 14.9 180 53.3 5.8 1.0 56.6 49.6 50.2
InVigor L130 LL 10.5 180 55.3 7.8 1.0 52.6 49.1 49.6
InVigor L140P LL 14.1 180 50.7 25.5 1.0 51.2 49.1 48.9
G49720 RR 16.3 180 50.1 30.5 1.0 49.8 48.7 49.6
InVigor 5440 LL 17.3 180 57.8 10.0 1.0 47.1 49.1 50.0
G35153 RR 10.6 179 49.4 37.5 1.0 46.5 49.2 49.4
HyClass 970 RR 14.3 180 51.7 17.0 1.0 45.6 50.9 49.0
C1511 SU 12.7 180 51.9 14.3 1.0 45.0 48.5 49.0
C1516 SU 13.3 181 55.7 2.8 1.3 44.1 47.9 50.6
C5507 SU 16.7 180 54.2 20.0 1.0 43.9 50.0 48.0
DKL70-10 RR 15.3 180 51.6 31.3 1.0 43.6 49.9 49.0
HyClass 930 RR 15.2 179 49.3 36.3 1.0 43.5 50.5 48.9
HyClass 955 RR 16.7 179 47.4 31.3 1.0 43.3 49.8 49.3
C5522 SU 15.1 180 55.6 12.5 1.0 42.9 50.7 47.7
BY16-768 RR 13.9 180 54.6 8.8 1.0 41.7 50.1 48.1
6080 RR RR 15.2 180 54.4 13.8 1.0 40.3 49.9 49.0
6074 RR RR 15.7 180 54.5 12.5 1.5 38.9 50.1 49.9
G49773 RR 14.8 180 51.1 47.5 1.0 37.1 50.1 49.4
GT50 RR 19.3 180 49.7 16.8 1.0 35.7 48.0 50.3
Empire none 15.5 179 50.2 41.3 1.0 35.5 48.1 50.1
NCH13G046 RR 13.8 180 49.9 52.5 1.0 34.6 46.1 51.1
DKL30-20 RR 15.9 177 52.0 41.3 2.3 31.3 50.7 49.4
Cara none 13.4 180 51.5 40.0 1.0 31.0 48.1 49.5
C5513 SU 16.1 181 56.0 18.8 1.0 30.3 49.9 49.8
Arriba none 15.7 179 45.7 55.0 1.0 25.0 48.0 49.7
Mean   14.9 180 52.1 25.2 1.1 41.5 49.3 49.4
CV   25.2 0.2 6.5 46.8 40.3 15.8 2.6 0.9
LSD   ns 0.6 4.8 16.6 ns 9.3 1.8 0.6
Pr>F   0.4287 0.0001 0.0002 0.0001 0.0923 0.0001 0.0001 0.0001

PLNT: plant; FLWR: 50% flowering; HT: height; LOD: lodging; SHTTR: shatter; YLD: yield; TWT: test weight; ns: non-significant

1adjusted to 8% moisture.

RR: roundup ready; LL: liberty link; SU: sulfonylurea.