The UVM Apple Team Dr. Lorraine Berkett, Dr. Elena Garcia, Terence Bradshaw, Chris Benedict, 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, Dr. Elena Garcia, Terence Bradshaw, Chris Benedict, Marlys Eddy |
The UVM Apple Program: Extension and Research for the commercial tree fruit grower in Vermont and beyond... |
L.P.Berkett, IPM Specialist
2004 Degree Day Accumulation for Arthropod Pests
2004 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 |
Bennington Bennington Co. Elev. 370 M |
Dummerston Windham Co. Elev. 171 M |
4/04 |
12 |
12 |
10 |
9 |
14 |
4/10 |
12 |
12 |
10 |
9 |
16 |
4/17 |
15 |
16 |
12 |
15 |
24 |
4/24 |
50 |
61 |
43 |
62 |
78 |
5/01 |
99 |
109 |
91 |
99 |
121 |
5/08 |
135 |
149 |
124 |
135 |
166 |
5/15 |
223 |
246 |
207 |
222 |
258 |
5/17 |
242 |
267 |
226 |
243 |
284 |
5/22 |
293 |
321 |
275 |
296 |
343 |
5/30 |
343 |
378 |
324 |
363 |
401 |
6/05 |
384 |
421 |
362 |
405 |
447 |
6/07 |
409 |
445 |
389 |
423 |
467 |
6/12 |
477 |
515 |
457 |
490 |
541 |
6/19 |
599 |
634 |
580 |
601 |
665 |
6/26 |
684 |
717 |
667 |
679 |
756 |
7/06 |
838 |
866 |
821 |
817 |
911 |
7/10 |
908 |
936 |
892 |
880 |
982 |
7/24 |
1196 |
1215 |
1182 |
1128 |
1251 |
7/31 |
1320 |
1335 |
1307 |
1237 |
1373 |
8/07 |
1434 |
1450 |
1418 |
1349 |
1501 |
8/14 |
1551 |
1564 |
1535 |
1457 |
1623 |
8/21 |
1666 |
1677 |
1650 |
1561 |
1740 |
8/28 |
1774 |
1783 |
1756 |
1658 |
1847 |
Degree Day and other weather information received from Skybit E-Weather Service: http://www.skybit.com/
| 2004 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 | 32-116 |
| Rosy Apple Aphid | 56-116 |
Spotted Tentiform Leafminer (STLM) - 1st adult catch |
38-11 4 |
| STLM - 1st egg observed | 58-130 |
| Tight Cluster (McIntosh) | 91-123 |
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 | 77-205 |
| STLM - 1st generation adult peak flight | 110-212 |
| Full Bloom (McIntosh) | 170-218 |
| San Jose Scale (SJS) - 1st adult catch | 181-321 |
CM - 1st adult catch |
1 86-324 |
STLM -1st sap-feeding mines observed |
165-317 |
| Petal Fall (McIntosh) | 228-282 |
Plum Curculio (PC) - 1st oviposition scars observed |
249-323 |
OBLR - 1st adult catch, 1st summer brood |
4 78-606 |
STLM - 2nd gen. 1st adult catch |
5 58-742 |
| SJS - 1st crawlers observed | 619-757 |
OBLR - peak catch |
5 69-837 |
AMF - 1st capture |
7 46-1032 |
| OFM - 2nd gen. 1st adult catch | 799-1025 |
| RBLR - 2nd gen. peak catch | 781-1087 |
STLM - 2nd gen. peak catch |
8 61-1225 |
| RBLR - 2nd gen. peak catch | 968-1378 |
OBLR - 1st catch, 2nd summer brood |
1 539-1847 |
STLM - 3rd gen. peak catch |
1 800-2138 |
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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