Objective:

To determine if agronomic difference exist among mixtures of Egan spring wheat with other varieties. 

Results:

Egan was planted as a 9:1 blend with other spring wheat varieties to attain a target population of 24 plants per square foot. Stand densities were recorded on May 30. The established population was slightly lower than the target, averaging 19 plants per square foot. However, all varietal combinations had similar stand densities. High temperatures and drought conditions characterized the growing season. As a result, yields were about one-quarter of the normal long term average for this area. There were no differences noted among the variety blends for any measured variable. While the refuge system helps delay the development of resistance to the Sm1 gene, these results indicate that the varietal choice for a 9:1 blend is of little consequence with respect to agronomic performance.

Summary:

All treatments performed similarly, regardless of the varietal combination.

Table 1. Materials and Methods.

Seeding Date: 5/4/2017 Harvest Date: 8/7/2017
Julian Date: 124 Julian Date: 219
Seeding Rate: 80 lb/A Soil Type: Creston SiL
Previous Crop: Peas Soil Test: 29-16-156
Tillage: Conventional Fertilizer: 150-30-30

Table 2. Agronomic Performance of Egan Blends, Kalispell, MT - 2017.

Treatment Plants/sqft Heading Julian Height in. Yield bu/A Protein % TWT lb/bu TKW g
Egan 19.7 176.3 20.6 23.2 16.73 56.6 30.6
Egan + Soren 17.9 177.0 20.9 25.3 16.66 56.8 29.6
Egan + Tyga 18.1 175.7 19.8 23.1 16.64 57.0 30.1
Egan + Vida 22.4 176.3 20.4 25.7 16.54 56.8 29.9
Egan + Expresso 21.0 177.7 19.6 23.4 16.49 56.8 29.7
Egan + Solano 18.3 177.7 20.4 22.8 16.75 56.8 30.1
Egan + Cabernet 18.5 176.7 20.0 21.5 16.71 56.8 29.5
Egan + WB9518 18.5 177.3 19.3 21.6 16.74 56.8 29.7
Mean 19.3 176.8 20.1 23.3 16.66 56.8 29.9
LSD P = 0.05 ns ns ns ns ns ns ns
Pr>F 0.5509 0.0891 0.9127 0.8383 0.7928 0.6397 0.6310

TWT: test weight; TKW: thousand kernel weight