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How to Manage Pests

Degree-days: Reference Tables

Oriental Fruit Moth

Information about how to use this model in almonds, nectarines, or peaches

To find total degree-days for a day, locate the minimum and maximum temperatures and follow the column and row to where they intersect. For odd-numbered temperatures, interpolate between numbers.

Lower Threshold: 45.0°F      Upper Threshold: 90.0°F      Method: Single Sine      Cutoff: Horizontal
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 1 1 1 1 1 1 2 3
50 1 1 1 2 2 2 3 4 5
52 2 2 2 2 3 3 4 5 6 7
54 3 3 3 3 4 4 5 6 7 8 9
56 4 4 4 4 5 5 6 7 8 9 10 11
58 4 5 5 5 6 6 7 8 9 10 11 12 13
60 5 5 6 6 7 7 8 9 10 11 12 13 14 15
62 6 6 7 7 8 8 9 10 11 12 13 14 15 16 17
64 7 7 8 8 8 9 10 11 12 13 14 15 16 17 18 19
66 8 8 9 9 9 10 11 12 13 14 15 16 17 18 19 20 21
68 9 9 9 10 10 11 12 13 14 15 16 17 18 19 20 21 22 23
70 10 10 10 11 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
72 11 11 11 12 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
74 12 12 12 13 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
76 12 13 13 14 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
78 13 14 14 15 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
80 14 15 15 16 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35
82 15 16 16 17 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
84 16 17 17 18 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39
86 17 18 18 19 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41
88 18 19 19 20 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
90 19 20 20 21 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45
92 20 20 21 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 43 44 45
94 21 21 22 22 23 24 25 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 44 45
96 21 22 22 23 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 40 41 42 43 44 45 45
98 22 22 23 23 24 25 26 27 28 29 30 30 31 32 33 34 35 36 37 38 39 40 41 42 42 43 44 45 45
100 22 23 23 24 24 25 26 27 28 29 30 31 32 33 34 35 36 37 37 38 39 40 41 42 43 43 44 45 45
102 23 23 24 24 25 26 27 28 28 29 30 31 32 33 34 35 36 37 38 39 39 40 41 42 43 43 44 45 45
104 23 24 24 25 25 26 27 28 29 30 31 32 33 34 34 35 36 37 38 39 40 41 41 42 43 44 44 45 45
106 24 24 25 25 26 27 27 28 29 30 31 32 33 34 35 36 37 37 38 39 40 41 41 42 43 44 44 45 45
108 24 24 25 26 26 27 28 29 30 31 31 32 33 34 35 36 37 38 38 39 40 41 42 42 43 44 44 45 45
110 24 25 25 26 27 27 28 29 30 31 32 33 34 34 35 36 37 38 39 39 40 41 42 42 43 44 44 45 45
112 25 25 26 26 27 28 28 29 30 31 32 33 34 35 35 36 37 38 39 40 40 41 42 43 43 44 44 45 45
114 25 25 26 27 27 28 29 30 30 31 32 33 34 35 36 37 37 38 39 40 41 41 42 43 43 44 44 45 45
116 25 26 26 27 27 28 29 30 31 32 33 33 34 35 36 37 38 38 39 40 41 41 42 43 43 44 44 45 45
118 26 26 27 27 28 28 29 30 31 32 33 34 34 35 36 37 38 38 39 40 41 41 42 43 43 44 44 45 45

Statewide IPM Program, Agriculture and Natural Resources, University of California
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