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How to Manage Pests
Degree-days: Reference Tables
Beet Armyworm
Information about how to use this model in
floriculture and ornamental nurseries
With this chart, you must add two half-day values to get total degree-days for one day.
- For the first half-day value, look up the value where the minimum and maximum temperatures for the day intersect.
- For the second half-day value, find the value at the intersection of the maximum temperature for the day and the minimum temperature for the NEXT day.
- Add the two numbers to determine the degree-days for the day. For odd-numbered temperatures, interpolate between numbers.
Lower Threshold: 54.0°F
Method: Single Sine
This is a double method; read two entries for each day and add.
|
|
Minimum temperatures
|
Max
temps
|
34
|
36
|
38
|
40
|
42
|
44
|
46
|
48
|
50
|
52
|
54
|
56
|
58
|
60
|
62
|
64
|
66
|
68
|
70
|
72
|
74
|
76
|
78
|
80
|
82
|
84
|
86
|
88
|
90
|
|
48
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
50
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
52
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
54
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
56
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
1
|
1
|
|
58
|
0
|
0
|
0
|
0
|
0
|
0
|
1
|
1
|
1
|
1
|
1
|
2
|
2
|
|
60
|
1
|
1
|
1
|
1
|
1
|
1
|
1
|
1
|
1
|
1
|
2
|
2
|
3
|
3
|
|
62
|
1
|
1
|
1
|
1
|
1
|
1
|
1
|
1
|
2
|
2
|
2
|
3
|
3
|
4
|
4
|
|
64
|
1
|
1
|
1
|
1
|
2
|
2
|
2
|
2
|
2
|
2
|
3
|
3
|
4
|
4
|
5
|
5
|
|
66
|
2
|
2
|
2
|
2
|
2
|
2
|
2
|
2
|
2
|
3
|
3
|
4
|
4
|
5
|
5
|
6
|
6
|
|
68
|
2
|
2
|
2
|
2
|
2
|
2
|
3
|
3
|
3
|
3
|
4
|
4
|
5
|
5
|
6
|
6
|
7
|
7
|
|
70
|
2
|
2
|
3
|
3
|
3
|
3
|
3
|
3
|
3
|
4
|
4
|
5
|
5
|
6
|
6
|
7
|
7
|
8
|
8
|
|
72
|
3
|
3
|
3
|
3
|
3
|
3
|
3
|
4
|
4
|
4
|
5
|
5
|
6
|
6
|
7
|
7
|
8
|
8
|
9
|
9
|
|
74
|
3
|
3
|
3
|
3
|
4
|
4
|
4
|
4
|
4
|
5
|
5
|
6
|
6
|
7
|
7
|
8
|
8
|
9
|
9
|
10
|
10
|
|
76
|
4
|
4
|
4
|
4
|
4
|
4
|
4
|
5
|
5
|
5
|
6
|
6
|
7
|
7
|
8
|
8
|
9
|
9
|
10
|
10
|
11
|
11
|
|
78
|
4
|
4
|
4
|
4
|
5
|
5
|
5
|
5
|
5
|
6
|
6
|
7
|
7
|
8
|
8
|
9
|
9
|
10
|
10
|
11
|
11
|
12
|
12
|
|
80
|
4
|
5
|
5
|
5
|
5
|
5
|
5
|
6
|
6
|
6
|
7
|
7
|
8
|
8
|
9
|
9
|
10
|
10
|
11
|
11
|
12
|
12
|
13
|
13
|
|
82
|
5
|
5
|
5
|
5
|
5
|
6
|
6
|
6
|
6
|
7
|
7
|
8
|
8
|
9
|
9
|
10
|
10
|
11
|
11
|
12
|
12
|
13
|
13
|
14
|
14
|
|
84
|
5
|
5
|
6
|
6
|
6
|
6
|
6
|
7
|
7
|
7
|
8
|
8
|
9
|
9
|
10
|
10
|
11
|
11
|
12
|
12
|
13
|
13
|
14
|
14
|
15
|
15
|
|
86
|
6
|
6
|
6
|
6
|
6
|
7
|
7
|
7
|
7
|
8
|
8
|
9
|
9
|
10
|
10
|
11
|
11
|
12
|
12
|
13
|
13
|
14
|
14
|
15
|
15
|
16
|
16
|
|
88
|
6
|
6
|
6
|
7
|
7
|
7
|
7
|
8
|
8
|
8
|
9
|
9
|
10
|
10
|
11
|
11
|
12
|
12
|
13
|
13
|
14
|
14
|
15
|
15
|
16
|
16
|
17
|
17
|
|
90
|
7
|
7
|
7
|
7
|
7
|
8
|
8
|
8
|
8
|
9
|
9
|
10
|
10
|
11
|
11
|
12
|
12
|
13
|
13
|
14
|
14
|
15
|
15
|
16
|
16
|
17
|
17
|
18
|
18
|
|
92
|
7
|
7
|
7
|
8
|
8
|
8
|
8
|
8
|
9
|
9
|
10
|
10
|
11
|
11
|
12
|
12
|
13
|
13
|
14
|
14
|
15
|
15
|
16
|
16
|
17
|
17
|
18
|
18
|
19
|
|
94
|
8
|
8
|
8
|
8
|
8
|
8
|
9
|
9
|
9
|
10
|
10
|
11
|
11
|
12
|
12
|
13
|
13
|
14
|
14
|
15
|
15
|
16
|
16
|
17
|
17
|
18
|
18
|
19
|
19
|
|
96
|
8
|
8
|
8
|
9
|
9
|
9
|
9
|
9
|
10
|
10
|
11
|
11
|
12
|
12
|
13
|
13
|
14
|
14
|
15
|
15
|
16
|
16
|
17
|
17
|
18
|
18
|
19
|
19
|
20
|
|
98
|
8
|
9
|
9
|
9
|
9
|
9
|
10
|
10
|
10
|
11
|
11
|
12
|
12
|
13
|
13
|
14
|
14
|
15
|
15
|
16
|
16
|
17
|
17
|
18
|
18
|
19
|
19
|
20
|
20
|
|
100
|
9
|
9
|
9
|
9
|
10
|
10
|
10
|
10
|
11
|
11
|
12
|
12
|
13
|
13
|
14
|
14
|
15
|
15
|
16
|
16
|
17
|
17
|
18
|
18
|
19
|
19
|
20
|
20
|
21
|
|
102
|
9
|
10
|
10
|
10
|
10
|
10
|
11
|
11
|
11
|
12
|
12
|
13
|
13
|
14
|
14
|
15
|
15
|
16
|
16
|
17
|
17
|
18
|
18
|
19
|
19
|
20
|
20
|
21
|
21
|
|
104
|
10
|
10
|
10
|
10
|
11
|
11
|
11
|
11
|
12
|
12
|
13
|
13
|
14
|
14
|
15
|
15
|
16
|
16
|
17
|
17
|
18
|
18
|
19
|
19
|
20
|
20
|
21
|
21
|
22
|
|
106
|
10
|
10
|
11
|
11
|
11
|
11
|
12
|
12
|
12
|
13
|
13
|
14
|
14
|
15
|
15
|
16
|
16
|
17
|
17
|
18
|
18
|
19
|
19
|
20
|
20
|
21
|
21
|
22
|
22
|
|
108
|
11
|
11
|
11
|
11
|
12
|
12
|
12
|
12
|
13
|
13
|
14
|
14
|
15
|
15
|
16
|
16
|
17
|
17
|
18
|
18
|
19
|
19
|
20
|
20
|
21
|
21
|
22
|
22
|
23
|
|
110
|
11
|
11
|
12
|
12
|
12
|
12
|
13
|
13
|
13
|
14
|
14
|
15
|
15
|
16
|
16
|
17
|
17
|
18
|
18
|
19
|
19
|
20
|
20
|
21
|
21
|
22
|
22
|
23
|
23
|
|
112
|
12
|
12
|
12
|
12
|
13
|
13
|
13
|
13
|
14
|
14
|
15
|
15
|
16
|
16
|
17
|
17
|
18
|
18
|
19
|
19
|
20
|
20
|
21
|
21
|
22
|
22
|
23
|
23
|
24
|
|
114
|
12
|
12
|
13
|
13
|
13
|
13
|
14
|
14
|
14
|
15
|
15
|
16
|
16
|
17
|
17
|
18
|
18
|
19
|
19
|
20
|
20
|
21
|
21
|
22
|
22
|
23
|
23
|
24
|
24
|
|
116
|
13
|
13
|
13
|
13
|
14
|
14
|
14
|
14
|
15
|
15
|
16
|
16
|
17
|
17
|
18
|
18
|
19
|
19
|
20
|
20
|
21
|
21
|
22
|
22
|
23
|
23
|
24
|
24
|
25
|
|
118
|
13
|
13
|
14
|
14
|
14
|
14
|
15
|
15
|
15
|
16
|
16
|
17
|
17
|
18
|
18
|
19
|
19
|
20
|
20
|
21
|
21
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22
|
22
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23
|
23
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24
|
24
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25
|
25
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