Objective:       

To evaluate spring wheat varieties and experimental lines for agronomic performance in environments and cropping systems representative of northwestern Montana.    

Results:           

Significant differences were observed in heading date, height, lodging, percent stripe rust infection, percent tan spot infection, yield, protein, test weight, and pre-harvest sprout. Heading date averaged 172 days (June 20) and spanned a nine day period ranging from 168 to 177 days. The mean height was 34.1 inches and ranged from 29.1 inches for WB 161 to 46.5 inches for Fortuna. Lodging averaged 0.9% with a range from 0.0% to 12.7 percent. Grain yield averaged 82.5 bu/A and ranged from 61.2 bu/A for MT 1517 to 107.5 bu/A for HRS 3504. Despite having applied a fungicide, stripe rust did occur in all varieties. Average percent infection was 33.4% and ranged from 2.0% for WB 161 to 63.3% for MT 1510. Protein averaged 14.80% and ranged from 12.53% for WB 162 to 16.27% for SY Igmar. Test weight averaged 61.0 lb/bu and ranged from 59.2 for MT 1510 and MT 1565 to 62.7% for SY Tyra. Pre-harvest sprout averaged 64.7 and ranged from 11.4 for LCS Prime to 191.8 for WB 161.

Summary:       

Overall, average yields were less in 2016 (82.5 bu/A) compared to the previous year (111.2 bu/A), which is partially attributed to the combined effects of stripe rust and tan spot.  HRS 3504 was the highest yielding variety, but LCS Prime, Egan, LCS Pro, SY Valda, WB Gunnison, Reeder and Vida were statistically equivalent.

 

Table 1. Materials and Methods   
Seeding Date: 4/22/2016 Harvest Date: 8/30/2016
Julian Date: 113 Julian Date 243
Seeding Rate: 80 lb/A Soil Type: Creston Sil
Previous Crop: Winter Wheat Soil Test:  96-8-200
Tillage: Conventional Fertilizer: 235-40-60
Herbicide: Post - Huskie 11oz/A + Axial 16.4ox/A + NIS 1qt/100gal +UAN 28% 1 qt/A 
Herbicide: Late Post - Stinger 1/3pt/A  
Insecticide: Warrior II 1.92fl oz/A Fungicide: Tilt 4oz/A

 

Table 2. Agronomic data         
Cultivar  HD HT LOD SR TS YLD¹ PRO² TWT¹ PHS
Julian in % % % bu/A % lb/bu Delta
HRS 3504 175.0 32.7 0.0 26.3 22.3 107.5 13.9 61.3 54.4
LCS Prime 172.0 34.4 0.0 31.0 27.0 101.7 13.5 63.0 11.4
Egan 173.0 37.3 0.0 7.0 21.7 100.8 15.8 59.4 107.1
LCS Pro 172.0 39.1 2.3 27.7 22.7 100.3 15.1 62.6 53.2
SY Valda 172.0 32.4 0.0 31.7 28.0 97.9 14.1 62.0 27.6
WB Gunnison 173.0 36.1 0.0 16.0 23.3 96.7 13.9 61.1 42.6
Reeder 172.0 36.9 0.0 29.3 30.7 96.6 15.2 61.7 28.6
Vida 174.0 33.9 1.7 34.0 35.0 96.2 15.1 60.9 31.2
MT 1426 168.0 35.4 8.3 39.3 38.3 94.9 14.6 60.8 101.9
MT 1514 172.0 37.4 1.0 26.7 21.7 94.1 15.4 60.7 49.9
MT 1173 176.0 36.5 0.0 27.7 27.7 93.5 14.6 61.0 26.6
MT 1542 170.0 35.0 0.0 19.7 30.7 91.9 14.8 61.3 81.7
MT 1570 170.0 31.0 0.0 42.7 53.3 90.8 13.1 61.8 112.6
Duclair 172.0 35.3 0.0 34.3 32.7 90.7 14.9 60.4 67.8
MT 1538 173.0 34.5 0.0 10.0 35.7 89.6 13.7 60.4 80.1
Fortuna 170.0 46.5 12.3 14.0 25.0 89.4 15.6 61.3 21.3
MT 1509 173.0 35.0 1.7 24.3 38.7 89.3 14.8 60.8 52.9
MT 1401 170.0 35.8 12.7 21.0 33.3 89.1 15.0 61.9 133.1
WB 163 173.0 31.6 0.0 37.3 39.0 87.8 13.3 62.1 84.4
MT 1543 170.0 34.0 0.0 23.3 25.0 87.6 14.6 60.1 66.2
MT 1320 170.0 37.3 1.7 17.3 37.3 87.3 14.4 61.4 78.0
HRS 3530 177.0 36.9 0.0 30.0 30.7 87.3 13.4 61.3 40.8
WB 161 170.0 29.1 0.0 2.0 20.0 86.8 16.1 60.9 191.8
McNeal 170.0 35.2 0.0 20.3 23.3 86.5 15.9 60.4 17.0
MT 1348 170.0 34.8 0.0 16.7 34.3 85.8 14.0 61.3 55.6
SY Tyra 174.0 31.9 0.0 25.3 31.0 85.6 14.1 62.7 28.3
MT 1572 173.0 32.4 0.0 39.0 37.0 84.8 14.9 61.9 74.0
MT 1442 173.0 34.5 1.7 19.0 36.0 84.5 15.2 60.7 45.5
MT 1574 173.0 32.7 0.0 45.7 45.0 84.2 14.2 60.6 101.0
MT 1451 171.0 34.5 0.0 34.0 36.7 83.8 14.5 60.3 152.6
MT 1512 171.0 35.0 1.7 47.3 70.0 82.5 14.5 61.5 43.4
MT 1427 170.0 33.3 1.7 61.7 67.7 82.3 14.5 59.5 129.7
MT 1511 173.0 34.6 0.0 39.3 42.7 81.3 14.9 59.9 43.4
Corbin 171.0 36.1 0.0 30.7 29.0 80.8 15.3 61.9 39.3
MT 1219 173.0 31.9 1.7 51.7 55.3 80.4 15.0 60.8 88.6
MT 1519 174.0 31.6 0.0 40.7 33.3 80.4 15.1 60.2 60.0
Alum 174.0 34.9 4.0 14.3 53.3 79.3 13.6 61.3 56.5
WB 162 168.0 32.5 0.0 60.0 50.0 79.0 12.5 61.9 92.1
MT 1316 169.0 32.7 0.0 28.3 51.0 78.6 15.2 60.5 113.5
MT 1518 171.0 34.5 0.0 48.3 38.3 78.6 15.1 60.5 75.7
Choteau 173.0 34.8 0.0 43.3 26.0 78.0 15.1 60.6 54.7
MT 1531 174.0 32.4 0.0 33.3 36.0 77.4 15.3 61.3 33.4
MT 1573 171.0 29.9 0.0 38.3 61.7 77.0 14.3 61.0 65.0
WPSP2-MCNEAL1 172.0 32.0 0.0 35.0 68.3 76.8 13.9 61.0 137.2
SY Igmar 174.0 33.2 0.0 24.0 31.3 76.1 16.3 61.8 30.8
MT 1523 172.0 33.6 0.0 34.0 34.0 75.7 14.9 61.2 35.1
HRS 3361 173.0 32.5 0.0 29.3 31.0 75.7 15.9 60.9 45.5
Thatcher 176.0 43.4 1.7 31.7 26.0 75.6 15.0 60.8 11.4
SY Soren 173.0 31.5 0.0 34.3 29.3 75.3 15.8 61.8 35.2
MT 1415 172.0 33.5 0.0 48.7 41.0 75.3 15.3 62.4 50.8
WB9879CLP 173.0 33.2 0.0 31.7 43.3 74.4 15.3 59.7 77.5
MT 1447 170.0 34.5 1.7 29.3 56.7 73.9 15.0 60.5 76.6
MT 1525 173.0 32.3 0.0 55.7 56.7 73.8 14.5 62.1 22.7
MT 1506 173.0 34.9 0.0 55.0 36.0 72.3 15.6 60.6 15.5
LNR12-0283 171.0 31.5 0.0 32.3 39.7 72.1 15.2 61.9 17.2
MT 1549 175.0 32.2 0.0 22.3 33.3 70.5 15.7 60.1 30.8
AGRIPR161 177.0 33.5 0.0 45.0 32.0 70.5 14.2 59.5 63.8
MT 1455 173.0 32.5 0.0 38.3 73.0 69.7 15.0 60.7 78.8
Brennan 170.0 31.2 0.0 32.7 43.3 69.3 14.9 61.4 83.3
MT 1510 170.0 32.9 0.0 63.3 59.0 68.3 15.0 59.2 56.1
MT1565 174.0 33.6 0.7 40.0 51.7 66.7 15.9 59.2 17.5
MT 1533 173.0 33.2 1.7 53.3 63.3 66.6 15.6 60.1 163.1
MT 1556 174.0 33.1 0.0 35.0 63.6 63.6 14.9 59.6 128.1
MT 1517 173.0 29.3 0.0 58.3 55.0 61.2 15.2 60.4 52.5
Mean 172.0 34.1 0.9 33.4 39.5 82.5 14.8 61.0 64.7
CV 1.0 4.6 234.2 25.8 34.5 11.8 3.5 0.8 53.2
LSD 2.7 2.5 3.4 13.9 22.0 15.8 0.8 0.7 55.6
Pr>F 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001
HD; heading date, HT: height, LOD: lodging, SR: stripe rust, TS: Tan Spot, YLD: yield, PRO: protein, TWT: test weight, PHS: pre-harvest sprout         
¹adjusted to 13% moisture         
²adjusted to 12% moisture