The UVM Apple Team Dr. Lorraine Berkett, Terence Bradshaw, Sarah Kingsley-Richards, Morgan Cromwell |
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, Sarah Kingsley-Richards, Morgan Cromwell |
The UVM Apple Program: Extension and Research for the commercial tree fruit grower in Vermont and beyond... |
L.P.Berkett, IPM Specialist
2008 Degree Day Accumulation for Arthropod Pests
2008 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 | 5 | 7 | 3 | 8 |
| 4/12 | 14 | 21 | 12 | 19 |
| 4/19 | 44 | 56 | 41 | 56 |
| 4/26 | 114 | 129 | 109 | 122 |
| 5/02 | 127 | 142 | 125 | 129 |
| 5/10 | 166 | 182 | 161 | 173 |
| 5/17 | 219 | 231 | 214 | 217 |
| 5/25 | 257 | 265 | 250 | 257 |
| 5/31 | 312 | 324 | 305 | 328 |
| 6/08 | 431 | 445 | 421 | 446 |
| 6/14 | 557 | 572 | 547 | 577 |
| 6/21 | 656 | 665 | 644 | 670 |
| 6/28 | 777 | 782 | 767 | 793 |
| 7/05 | 905 | 908 | 897 | 933 |
| 7/12 | 1055 | 1057 | 1046 | 1088 |
| 7/19 | 1202 | 1203 | 1192 | 1243 |
| 7/26 | 1337 | 1340 | 1328 | 1389 |
| 8/02 | 1480 | 1479 | 1470 | 1538 |
| 8/09 | 1601 | 1600 | 1590 | 1662 |
| 8/16 | 1705 | 1699 | 1694 | 1770 |
| 8/23 | 1815 | 1804 | 1806 | 1877 |
| 8/30 | 1925 | 1908 | 1917 | 1985 |
| 9/06 | 2064 | 2046 | 2058 | 2123 |
| 9/13 | 2141 | 2122 | 2133 | 2205 |
| 9/20 | 2215 | 2198 | 2204 | 2279 |
| 9/27 | 2272 | 2256 | 2264 | 2336 |
| 10/04 | 2324 | 2311 | 2314 | 2396 |
| 10/11 | 2354 | 2339 | 2342 | 2429 |
| 10/18 | 2388 | 2372 | 2374 | 2467 |
| 10/25 | 2392 | 2376 | 2378 | 2473 |
| 10/31 | 2400 | 2382 | 2386 | 2482 |
Degree Day and other weather information received from Skybit E-Weather Service: http://www.skybit.com/
2007 Guide to Arthropod Pest Events Based on Degree-Day Accumulations1 |
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| Pest/Phenology Event | Estimated DD Base 50 F (Jan 1) |
| Redbanded Leafroller (RBLR) - 1st catch | 32-124 |
| 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 | 81-205 |
| STLM - 1st generation adult peak flight | 113-209 |
| Full Bloom (McIntosh) | 170-220 |
| San Jose Scale (SJS) - 1st adult catch | 186-324 |
CM - 1st adult catch |
1 90-330 |
STLM -1st sap-feeding mines observed |
165-317 |
| Petal Fall (McIntosh) | 227-283 |
Plum Curculio (PC) - 1st oviposition scars observed |
249-323 |
OBLR - 1st adult catch, 1st summer brood |
4 79-605 |
STLM - 2nd gen. 1st adult catch |
5 60-740 |
| SJS - 1st crawlers observed | 619-757 |
OBLR - peak catch |
5 65-827 |
AMF - 1st capture |
7 50-1034 |
| OFM - 2nd gen. 1st adult catch | 784-1020 |
| RBLR - 2nd gen. peak catch | 770-1070 |
STLM - 2nd gen. peak catch |
861-1217 |
| RBLR - 2nd gen. peak catch | 965-1353 |
OBLR - 1st catch, 2nd summer brood |
1528-1836 |
STLM - 3rd gen. peak catch |
1775-2121 |
1 Source of Estimated DD (Base 50F) for arthropod pest events: 2007 Pest Management Guidelines for Commercial Tree-Fruit Production. 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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