Objective:                   

To evaluate the performance of winter wheat varieties in Northwestern Montana

Summary:

The trial was planted under rainfed conditions in 2017 on silt loam soil. The management information is available in Table 1. Stripe rust disease pressure was not high at the initial rating done on June 10th. Subsequent ratings in July were not recorded due to interference from leaf senescence. Rust-susceptible varieties such as Decade showed lower yield and quality.

Yield was significant among the tested varieties. The average yield was 85.4 bu/A, ranging from 25.7 (Decade) to 124.9 (NSA10-2196) bu/A. Average protein was 11.8%, with the lowest at 10.2% (LCS Jet) and the highest at 13.9% (Bearpaw). Test weight averaged 58.4 lb/bu with a range of 49.6 (Bearpaw) to 62.3 (Oahe) lb/bu. The average TKW was 36.1 g. Average height was 37 inches with SY Clearstone-2CL the tallest and 07CL046-2the shortest. Average heading date was 158 days. Complete agronomic performance is shown in Table 2.

Table 1. Management information   
Seeding date: 9/26/2017 Harvest date: 8/1/2018
Julian date: 269 Julian date: 213
Seeding rate: 25 plants/ft2 Soil type: Creston silt loam
Previous crop: Spring wheat (Egan) Soil nutrient residual (lb/A): 172-8-178 (Fall, 2017)
Tillage: conventional Nutrient fertilizer applied (lb/A): 9-42-60 (Fall)
      5-45-0 (Spring)
Herbicide: Husky Complete Insecticide None
        

Table 2. Agronomic performance of the winter wheat varieties.       
Variety/line  HD Rust HT YLD1 PRO2 TWT1 TKW
Julian % in bu/A % lb/bu g
NSA10-2196 157 0 35.1 124.9 10.7 58.7 37.9
LWW14-73915 158 0 33.1 122.3 11.4 59.6 37.8
LCS Jet 158 1 34.5 122.3 10.2 59 39.5
MT1564 154 0 37.7 106.2 11.2 62 40.9
MT16101 158 0 38.7 105.5 12 60 40.7
Long Branch 153 0 34 101.5 11.4 62.2 39.7
Keldin 158 0 37.7 101.3 11.2 61.8 40
Oahe 156 1 41.1 100.5 12 62.3 40.5
MT1683 159 0 41.7 100.1 11.5 59.5 41.8
Ray 163 0 41 97.2 11.6 53.9 37.7
MT1642 161 0 35.3 96.2 11.6 54.3 39.1
SY Sunrise 158 0 32.3 95.3 11.7 61.7 36
MT1547 158 0 37.3 94.5 11.1 62 41.3
Judee 158 0 39.1 94.5 13.2 58.4 38.7
MTS1588 159 0 34.5 94.1 12 59.8 37
MT1695 154 0 35.6 93.7 11.1 61.8 34.8
MT1265 161 0 39.3 93.1 11.1 58.6 40.9
MTW1491 160 1 39.4 92.4 11.4 59.5 43.8
FourOsix 159 0 37.3 92.4 11.2 61.2 40.2
Warhorse 160 0 35.6 92 12.5 61 42.2
MT1687 156 0 33 89.6 12.8 61.6 30.8
SY Clearstone 2CL 160 0 44 89.6 11 59.1 38.4
Loma 159 0 37.2 87.6 12.3 55.4 41
WB4623CLP 158 0 36.2 87.2 12.5 60.9 39.4
Langin 151 0 37.2 87.1 11.5 58.7 42.1
Brawl CLP 151 3 33.4 86.9 12.2 60.2 42
MT1563 160 0 39.2 86.6 11.3 56.4 33.4
MTF1631 159 0 43 85.6 12.1 55 41.7
MTCS1601 159 1 35.4 85.4 12.7 60.5 35.1
SY Monument 156 0 36.3 84.1 11.6 58.8 38.5
Yellowstone 161 0 36.6 83.6 11 57.8 36.7
AAC Wildfire 161 0 42.7 83.2 11.9 55.8 37.1
MTV1681 157 1 37.3 82.2 11.8 55.9 33
LCS Link 155 1 34.6 80.1 11.6 59.7 37.5
MTF1435 160 0 43.1 79.8 12.1 56.5 28.8
MT1688 155 0 33.4 79.7 12.4 61.4 32.2
LCS Chrome 155 0 37.2 78.5 11.8 61 40
Northern 161 0 37 78.2 12.2 56.2 37.2
WB4483 160 7 35.2 74.5 12.3 57.6 36.1
WB4614 157 2 34.7 72.2 11.7 57.5 34.1
PSB13NEDH-7-140 157 0 41.2 72.1 11.6 59.7 25.5
SY Wolf 153 0 33 71.5 12.2 56.4 33.2
07CL046-2 156 0 30.1 71.2 12 60.8 32.5
CO13003C 154 14 38.5 70.1 11.8 55.3 33.9
SY 517 CL2 151 7 36.1 53.2 11.6 56 25.1
Incline AX 158 3 34.5 52.9 11.4 52.7 27.2
Decade 157 8 39.5 48.4 11.5 53.1 23.7
WB4575 158 15 35.7 36.4 12.4 53.3 20.5
Bearpaw 157 7 37.8 25.7 13.9 49.6 20.6
Mean 157 1.5 37 85.4 11.8 58.4 36.1
CV 1 230 6.1 12.9 3.6 3.6 0.2
LSD 2.8 4.1 3.9 19.2 0.7 3.4 4.5
Pr>F <.0001 <.0001 <.0001 <.0001 <.0001 <.0001 <.0001
YLD: yield, PRO: protein, TWT: test weight, TKW: thousand kernel weight, HT: plant height, HD: heading, and FN: falling numbers.       
1 Adjusted to 13% moisture       
2 Adjusted to 12% moisture