The UVM Apple Team Dr. Lorraine Berkett, Terence Bradshaw, Marlys Eddy |
The UVM Apple Program: Extension and Research for the commercial tree fruit grower in Vermont and beyond... |
|
The UVM Apple Team Dr. Lorraine Berkett, Terence Bradshaw, Marlys Eddy |
The UVM Apple Program: Extension and Research for the commercial tree fruit grower in Vermont and beyond... |
L.P.Berkett, IPM Specialist
2005 Degree Day Accumulation for Arthropod Pests
2005 Estimated Degree-Day Accumulation (Base 50F, from Jan. 1) for Selected Sites |
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| Date | UVM HRC
South Burlington Chittenden Co. Elev. 71 M |
Shoreham Addison Co. Elev. 107 M |
South Hero Grand Isle Co. Elev. 54M |
Dummerston Windham Co. Elev. 171 M |
4/01 |
3 |
6 |
2 |
6 |
4/09 |
13 |
20 |
12 |
26 |
4/12 |
16 |
25 |
14 |
33 |
4/16 |
21 |
32 |
19 |
41 |
4/19 |
41 |
52 |
39 |
63 |
4/23 |
56 |
71 |
52 |
88 |
4/27 |
70 |
85 |
66 |
100 |
4/30 |
75 |
90 |
70 |
106 |
5/04 |
79 |
93 |
74 |
111 |
5/07 |
89 |
103 |
85 |
117 |
5/10 |
106 |
120 |
103 |
130 |
5/14 |
130 |
148 |
126 |
161 |
5/21 |
157 |
178 |
153 |
196 |
5/29 |
199 |
217 |
194 |
228 |
6/04 |
291 |
304 |
289 |
306 |
6/11 |
452 |
464 |
457 |
469 |
6/18 |
575 |
590 |
571 |
589 |
6/26 |
712 |
724 |
709 |
726 |
7/03 |
879 |
886 |
877 |
883 |
7/09 |
996 |
998 |
992 |
986 |
7/16 |
1162 |
1163 |
1159 |
1154 |
7/23 |
1341 |
1340 |
1338 |
1329 |
8/7 |
1643 |
1652 |
1638 |
1659 |
8/13 |
1792 |
1803 |
1788 |
1815 |
8/20 |
1906 |
1917 |
1900 |
1940 |
8/27 |
2019 |
2027 |
2012 |
2053 |
9/04 |
2174 |
2179 |
2170 |
2212 |
9/10 |
2248 |
2256 |
2243 |
2297 |
9/17 |
2378 |
2386 |
2374 |
2428 |
9/24 |
2467 |
2479 |
2462 |
2528 |
10/01 |
2516 |
2527 |
2513 |
2577 |
10/08 |
2613 |
2618 |
2611 |
2676 |
10/15 |
2635 |
2639 |
2630 |
2703 |
10/22 |
2641 |
2649 |
2634 |
2719 |
10/29 |
2641 |
2649 |
2634 |
2719 |
Degree Day and other weather information received from Skybit E-Weather Service: http://www.skybit.com/
| 2005 Guide to Arthropod Pest Events Based on Degree-Day Accumulations1 | |
| Pest/Phenology Event | Estimated DD Base 50 F for Event |
| Redbanded Leafroller (RBLR) - 1st catch | 32-110 |
| Rosy Apple Aphid | 56-116 |
Spotted Tentiform Leafminer (STLM) - 1st adult catch |
3 9-113 |
| STLM - 1st egg observed | 58-130 |
| Tight Cluster (McIntosh) | 84-122 |
Tarnished Plant Bug (TPB) - 1st observed |
43- 167 |
| Obliquebanded leafroller (OBLR) - 1st overwintered larvae observed | 64-160 |
European Red Mite (ERM) - egg hatch observed |
100-168 |
| Pink (McIntosh) | 125-157 |
| Oriental Fruit Moth (OFM) - 1st adult catch | 78-204 |
| STLM - 1st generation adult peak flight | 112-210 |
| Full Bloom (McIntosh) | 171-221 |
| San Jose Scale (SJS) - 1st adult catch | 184-322 |
CM - 1st adult catch |
1 88-324 |
STLM -1st sap-feeding mines observed |
165-317 |
| Petal Fall (McIntosh) | 230-286 |
Plum Curculio (PC) - 1st oviposition scars observed |
249-323 |
OBLR - 1st adult catch, 1st summer brood |
4 78-604 |
STLM - 2nd gen. 1st adult catch |
5 57-739 |
| SJS - 1st crawlers observed | 619-757 |
OBLR - peak catch |
5 64-830 |
AMF - 1st capture |
7 47-1029 |
| OFM - 2nd gen. 1st adult catch | 780-1018 |
| RBLR - 2nd gen. peak catch | 768-1074 |
STLM - 2nd gen. peak catch |
854-1212 |
| RBLR - 2nd gen. peak catch | 959-1357 |
OBLR - 1st catch, 2nd summer brood |
1525-1837 |
STLM - 3rd gen. peak catch |
1779-2129 |
1 Source of Estimated DD (Base 50F) for arthropod pest events: Pest Management Guidelines for Commercial Tree-Fruit Production 2003. A Cornell Cooperative Extension Publication, Table 14: "Degree-day accumulations (from January 1) corresponding to selected fruit phenology and arthropod pest events." http://www.nysaes.cornell.edu/ent/treefruit/ |
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Please send comments and suggestions to: lorraine.berkett@uvm.edu
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