Table 5. Visual root scores for wheat at soft dough stage grown at selected locations in North Dakota, 1999.

 

Location

 

Treatment

Subcrown1 internode rating

 

Color index2

 

Root mass3

Amidon

 

 

 

 

Fumigate

2.3

2.8

3.5

Natural

2.7

3.3

2.5

Mean

2.5

3.0

3.0

CV %

16.0

13.6

19.2

LSD .05

NS

NS

NS

 

Center

 

 

 

 

Fumigate

2.1

2.1

3.0

Natural

2.9

3.3

2.3

Mean

2.5

2.7

2.6

CV %

14.7

39.3

25.8

LSD .05

NS

NS

NS

 

Garrison

 

 

 

 

Fumigate

2.2

2.0

2.8

Natural

2.7

2.8

2.3

Mean

2.4

2.4

2.5

CV %

15.8

25.8

11.5

LSD .05

NS

NS

NS

 

Hazen

 

 

 

 

Fumigate

1.9

1.4

3.4

Natural

2.5

1.9

3.0

Mean

2.2

1.6

3.2

CV %

9.3

43.5

5.5

LSD .05

0.5

NS

NS

 

Garrison

 

 

 

 

Fumigate

2.2

2.0

2.8

Natural

2.7

2.8

2.3

Mean

2.4

2.4

2.5

CV %

15.8

25.8

11.5

LSD .05

NS

NS

NS

 

Selfridge

 

 

 

 

Fumigate

1.7

1.3

2.9

Natural

2.1

2.3

2.5

Mean

1.9

1.8

2.7

CV %

13.3

16.5

6.6

LSD .05

NS

0.6

NS

 

Williston

 

 

 

 

Fumigate

2.1

1.8

3.3

Natural

2.4

2.3

3.2

Mean

2.2

2.1

3.3

CV %

22.9

28.4

21.4

LSD .05

NS

NS

NS

1 Subcrown internode rating, 0-4. 0 = no infection, 1 = less than 25% internode infected, 2 = 25-50% internode infected, 3 = 51-75% of internode infected, multiple lesions, and 4 = 75-100 % of internode infected, lesions coalesced.

2 Root color index, 1-4. 1 = white, 4 = dark brown.

3 Root mass, 1-4. 1 = few roots and 4 = substantial root system.