Objective 

The purpose of this study is to determine the growth, yield, and quality performance of six spring wheat entries. 

Summary

Six spring wheat entries (EXP21509, Reg Hale, Reg WB9668, WB9303, WB9623, and WSU Bush) were planted at the Northwestern Agricultural Research Center (field management information is presented in Table 1). 

 Among the six entries tested, WB9623 and WSU Bush produced the highest yields, but had the lowest grain protein concentrations, reflecting the inverse relationship between these traits (Figures 1, 2). In contrast, Reg WB9668 and WB9303 showed the highest grain protein concentrations, but the lowest yields. 

There is no significant difference in height and falling number values among entries (Table 2). Reg Hale, and Reg WB9668 had numerically higher falling number values than the rest of the entries (>330 seconds, an economically desirable value).  Among the six entries, WB9623 and Reg Hale are the top performers based on the agronomic parameters (Table 2). 

 

Table 1. Field Management Information 

Seeding date: 

4/22/2025 (112 Julian) 

Field Location: 

R6 

Seeding rate: 

24 seeds/ft2  

Harvest date: 

8/13/2025 (225 Julian) 

Previous crop: 

Barley 

Soil type: 

Creston Silt loam 

Herbicide: 

Axial Bold   

Cleansweep  

Tillage: 

Conventional 

Soil residual nutrient (N, P, K lb/A): 

66-8-140 (Fall 2024) 

Insecticide: 

 N/A 

Nutrient fertilizer applied (N, P, K lb/A): 

246-77-161 (Spring 2025) 

Fungicide: 

 N/A 

 

 

Table 2: Agronomic Performance of Six Spring Wheat Entries

Entry

PLNT HT

(in)

TWT

(lbs/bu)

TKW

 (g)

FN

(seconds)

EXP21509

25.3a

61.0b

45.7c

308a

Reg Hale

25.0a

62.1a

52.2a

341a

Reg WB9668

28.0a

60.6bc

41.5d

343a 

WB9303

27.7a

59.5c

45.7c

242a

WB9623

25.0a

61.6ab

50.8ab

296a

WSU Bush

27.1a

62.2a

49.2b

326a

Mean

26.4

61.2

47.5

309

F value

0.70

8.69

44.84

5.01

Pr>F

0.63

0.0004

<0.0001

0.33

Note: Values with the same letter within column are not significantly different at P<0.05

PLNT HT: Plant Height, TWT: Test Weight, TKW: Thousand Kernel Weight, FN: Falling Number

 

Figure 1. Grain yield of six spring wheat entries.Entries

Figure 1. Grain yield of six spring wheat entries. The same letter assignment denotes nonsignificance at α=0.05.

Figure 2. Grain protein concentration of six spring wheat entries. Entries

Figure 2. Grain protein concentration of six spring wheat entries. The same letter assignment denotes nonsignificance at α=0.05.

Acknowledgements

We thank R. Barnes, T. Burkhart, J. Cain, A. Mathison, and E. Schreifels for their assistance with field operations, data collection, and sample processing.

Link to 2025 Growth, Yield and Quality Performance of Six Spring Wheat Entries Printable Report (PDF)