Principle Investigator: Gadi V.P. Reddy, Superintendent and Associate Professor of Entomology/Insect Ecology, Western Triangle Ag Research Center

Personnel: John H. Miller, Research Associate and Julie Prewett, Research Assistant WTARC, Conrad, MT, and Brooke Bohannon, MSU/MAES, Northwestern Ag. Research Center, Creston, MT.

 

Objectives: To evaluate canola varieties grown at Western Triangle Ag. Research Center.

 

Methods: All plots were planted on no-till chemical fallow with a 4-row drill with spacing set to one foot. Plots were trimmed, measured for length, and then harvested with a Hege 140 plot combine. Canola seed was cleaned prior to collecting data.

 

Results: The canola nursery was affected by the hotter than normal June and lack of precipitation. The nursery averaged 15 bu/ac (Table 1). Test weight averaged 50.8 lbs/bu with mean seed oil content being 40%. There was no lodging to report in the canola nurseries.

Overall, the crop year temperatures where close to the 29 year average at the research center with the exception of 2.5 inches less moisture than the 29 year average. March was 7 degrees warmer than the normal. Also, June was 4.6 degrees warmer when compared to the 29 year average.

Soil temperatures at the station under chemical fallow stubble stayed under 40 degrees at a depth of eight inches until mid April. May was cool and wet. Early in June we received 0.95 inches of moisture, it warmed up and remained dry for about 30 days, during that time the canola was flowering and setting pods. Overall, it was a very poor year for canola.

A similar project will be proposed for FY 2016. The continuation of canola variety trials help elucidate researchers and farmers which varieties are better suited for that particular region in Montana.

 

Table 1. Statewide Industry Canola Variety Trial - Dryland, No-Till Chemical Fallow. Western Triangle Ag.

Research Center, Conrad, MT. 2015.

 

Seed

Test

Oil

Julian

Plant

Plant

Variety

Yield

Weight

%

date

Height

per

 

bu/a

lb/bu

 

 

inches

Ft2

 

6044RR

 

11.9

 

51.2

 

38.7

 

179

 

31.3

 

6.0

6074RR

9.9

50.9

38.7

178

36.8

5.1

C1511

13.4

50.8

35.2

174

38.5

5.2

C1516

9.2

51.3

38.1

176

36.8

4.8

Cara

9.8

50.5

39.8

176

32.0

5.6

Arriba

12.2

50.4

38.9

175

27.3

5.1

HyClass 930

15.7

50.2

42.3

173

34.5

6.7

HyClass955

18.9

50.4

42.4

172

37.0

4.8

HyClass 970

13.6

51.1

40.0

177

35.5

4.9

InVigor L130

13.7

51.1

41.6

175

36.3

3.0

InVigor L140P

11.8

50.6

41.7

179

36.0

4.8

InVigor L252

11.9

50.7

42.0

177

35.8

3.6

InVigor 5440

16.3

51.7

39.7

180

35.5

4.8

DKL 38-48

15.4

50.6

40.1

173

36.3

5.0

DKL 70-07

20.4

50.5

40.6

177

37.3

6.2

DKL70-10

19.1

50.5

40.1

174

37.3

5.9

DKL 70-50CR

20.4

50.8

40.9

176

37.3

6.4

G28101

20.2

50.2

43.6

173

39.0

4.9

G49720

21.7

51.4

36.0

178

35.5

5.5

Mean

15.0

50.8

40.0

176

35.6

5.2

LSD (α = 0.05)

ns

0.5

1.4

ns

5.7

ns

CV (%)

43.1

0.7

2.5

2.3

11.4

37.1

P-value (0.05)

0.1050

0.0001

0.0001

0.1627

0.0415

0.06338

Grain yield is adjusted to a uniform moisture content of 10%.

Grain protein, grain oil, and oil yield are reported on a dry matter basis. Seeding Date: 4/12/2015

Thrashing Date: 8/31/2015

Fertilizer (actual lbs/a): 120-22.5-55-20

Preplant sprayed with Roundup RT3at 16 oz/a on May 21, 2013. Previous crop: barley

Tillage: chemical fallow

Seeding Rate 10 seeds/ft2 in 12 inch rows