Winter Wheat Stand Evaluation

Feekes 5 growth stage (leaf sheaths strongly erect) is a good time to evaluate winter wheat stand. Over the past two years, with funding from the Ohio Small Grains Marketing Program, we evaluated the relationship between wheat stems (main stem + tillers) and yield.

Keep in Mind:

  1. In our research, we counted the number of wheat stems which included both the main stem (main plant) and tillers. For example, in Figure 1, there are two stems.

  2. Make sure to count the number of stems in several areas of the field.

  3. In our research, stem counts at Feekes 5 growth stage predicted wheat yield better than stem counts at Feekes 6 growth stage (first node visible).

The relationship between the number of wheat stems and yield is shown in Table 1 and is based on the data shown in Figure 2.

Table 1. Wheat grain yield and corresponding number of wheat stems.

Wheat Grain Yield

(bu/acre)

Wheat Stems in Square Foot

(stems/ft2)

Wheat Steams in Linear Foot of Row

(stems/foot of row)

100

118

74

90

90

56

80

69

43

70

51

32

60

37

23

 

 

 

 

 

 

 

 

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C.O.R.N. Newsletter is a summary of crop observations, related information, and appropriate recommendations for Ohio crop producers and industry. C.O.R.N. Newsletter is produced by the Ohio State University Extension Agronomy Team, state specialists at The Ohio State University and the Ohio Agricultural Research and Development Center (OARDC). C.O.R.N. Newsletter questions are directed to Extension and OARDC state specialists and associates at Ohio State.