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How to Manage Pests

Degree-days: Reference Tables

Obliquebanded Leafroller (Nectarines, Peaches, Pistachios)

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

See also obliquebanded leafroller on almonds and prunes.

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: 43.0°F      Upper Threshold: 94.0°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
400000
4200000
44000001
461111123
4811222345
50222334567
523334456789
544445567891011
565556678910111213
585667789101112131415
606778891011121314151617
627888910111213141516171819
648999101112131415161718192021
6699101011121314151617181920212223
68101011111213141516171819202122232425
7011111212131415161718192021222324252627
721212131314151617181920212223242526272829
74131314141516171819202122232425262728293031
7614141515161718192021222324252627282930313233
781515161617181920212223242526272829303132333435
80161617171819202122232425262728293031323334353637
8217171818192021222324252627282930313233343536373839
841818191920212223242526272829303132333435363738394041
86191920202122232425262728293031323334353637383940414243
8820202121222324252627282930313233343536373839404142434445
902121222223242526272829303132333435363738394041424344454647
922222232324252627282930313233343536373839404142434445464748
942323242425262728293031323334353637383940414243444546474849
962324242526272829303132333435363738394041424344454647484949
982425252627282930313132333435363738394041424344454647484950
1002525262627282930313233343536373839404142434445464647484950
1022526262728293031323334353636373839404142434445464748484950
1042626272828293031323334353637383940414243434445464748494950
1062627272829303132333434353637383940414243444545464748494950
1082727282929303132333435363738394040414243444546474748495050
1102728282930313232333435363738394041424343444546474748495050

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