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How to Manage Pests

Degree-days: Reference Tables

Codling Moth

Information about how to use this model in apples, pears, plums, prunes, and walnuts or in landscape

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: 50.0°F      Upper Threshold: 88.0°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
4800000000
50000000000
520000001112
5411111112234
56112222223456
582222333345678
60333334445678910
62444445556789101112
64445555667891011121314
66556666778910111213141516
68666777889101112131415161718
70777888991011121314151617181920
728888991010111213141516171819202122
7489991010111112131415161718192021222324
769101010111112121314151617181920212223242526
781011111112121313141516171819202122232425262728
80111112121313141415161718192021222324252627282930
8212121313141415151617181920212223242526272829303132
841313141415151616171819202122232425262728293031323334
86141415151516171718192021222324252627282930313233343536
8815151616161718181920212223242526272829303132333435363738
901616161717181819202122232425262728293031323334353636373838
921617171718181920202122232425262728293031323334353637373838
941717181818192020212223242526272829303132333334353637383838
961718181919202021222323242526272829303132333435353637383838
981818191919202121222324252627282930303132333435363637383838
1001819191920202122222324252627282930313232333435363637383838
1021919192020212122232425262727282930313233343435363737383838
1041919202021212222232425262728293030313233343435363737383838
1061920202121222223242425262728293031313233343535363737383838
1082020202121222223242526272728293031323233343535363737383838
1102020212122222323242526272828293031323333343536363737383838
1122021212222222324242526272829303031323334343536363737383838
1142121212222232324252626272829303131323334343536363737383838
1162121222223232424252627272829303131323334343536363737383838
1182121222223232424252627282829303132323334353536363737383838

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

Accessibility   /WEATHER/DDTABLE/codling_moth.html revised: April 21, 2004. Contact webmaster.