Prosper Trial #4, 1998 - Disease Severity

Disease Ratings (% Severity Early Blight)

Trt.

Chemical

Rate

Schedule

Interval

13-Aug

20-Aug

26-Aug

1-Sep

9-Sep

85

Untreated

-

-

-

3.8

12.2

31.6

83.3
98.8

86

Bravo WS

Tattoo C

1.5 pt/a

2.3 pt/a

Appl. 1, 2, 4, 6, 8, 9

Appl. 3, 5, 7

7 day

0.4

3.8

17.8

17.8
50.0

87

Bravo WS

Tattoo C

1.5 pt/a

2.3 pt/a

Appl. 1, 2, 6, 7, 8, 9

Appl. 3, 4, 5,

7 day

0.6

7.2

13.8

18.3
48.4

88

Tattoo C

Bravo WS

2.3 pt/a

1.5 pt/a

Appl. 1, 2, 4

Appl. 3, 5, 6, 7, 8, 9

7 day

0.9

7.8

21.9

23.4
59.1

89

Tattoo C

1.28 pt/a

Full Season

7 day

1.6

5.3

18.8

23.9
62.8

90

Tattoo C

1.71 pt/a

Full Season

7 day

2.4

11.3

22.2

30.0
67.4

91

Tattoo C +

Bravo WS

1.28 pt/a +

0.83 pt/a

Full Season

7 day

2.2

9.7

28.8

23.6
59.3

92

Bravo WS

1.5 pt/a

Full Season

7 day

2.2

7.8

24.4

20.9
58.6

93

Polyram 80DF +

Super Tin

2.0 lb/a +

2.5 oz/a

Full Season

7 day

0.2

3.4

5.3

3.4
9.0

94

Acrobat 69 WG

2.25 lb/a

Full Season

7 day

0.6

2.2

5.3

3.5
11.1

95

Curzate 60DF +

Bravo WS

Bravo WS

3.4 oz/a +

1.5 pt/a

1.5 pt/a

 

Appl. 1-6

Appl. 7, 8, 9

7 day

3.8

7.2

20.0

25.6
63.3

96

Ridomil 4EC

Bravo WS

0.2 oz/1000 ft

1.5 pt/a

.@ planting

Full Season

7 day

1.1

4.7

17.2

16.6
51.3

97

Ridomil Gold 4EC +

Bravo WS

Bravo WS

3.20 oz/a +

1.5 pt/a

1.5 pt/a

 

Appl. 1, 3

Appl. 2, 4-9

7 day

0.6

5.0

15.9

10.6
31.7

98

Bravo Zn

Ridomil Gold Bravo

Acrobat 69 WG

Penncozeb 75DF

Acrobat 69 WG

1.8 pt/a

2.0 lb/a

2.25 lb/a

2.0 lb/a

2.25 lb/a

Appl. 1

Appl. 2

Appl. 3

Appl. 4-7 3

Appl. 8, 9

7 day

0.4

4.7

13.4

6.2
18.9

99

Dimethomorph 50WP +

Kocide 2000

0.203 lb a.i./a +

1.5 lb a.i./a

Full Season

7 day

5.3

17.5

30.0

23.6
56.6

100

Bravo WS

1.5 pt/a

Full Season

7 day

0.5

2.2

12.5

13.5
38.8

LSD0.05

3.0

5.2

11.8

9.7
23.6