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
2007 Degree Day Accumulation for Arthropod Pests
2007 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 | 11 | 13 | 8 | 24 |
| 4/07 | 12 | 14 | 9 | 25 |
| 4/15 | 12 | 14 | 9 | 25 |
| 4/21 | 24 | 28 | 23 | 39 |
| 4/28 | 64 | 70 | 62 | 81 |
| 5/05 | 83 | 93 | 79 | 109 |
| 5/12 | 167 | 173 | 161 | 193 |
| 5/19 | 192 | 202 | 186 | 231 |
| 5/27 | 284 | 295 | 279 | 332 |
| 6/02 | 375 | 391 | 367 | 430 |
| 6/09 | 463 | 479 | 457 | 513 |
| 6/16 | 587 | 594 | 587 | 610 |
| 6/23 | 696 | 699 | 697 | 717 |
| 6/30 | 830 | 830 | 832 | 856 |
| 7/07 | 926 | 926 | 933 | 955 |
| 7/14 | 1055 | 1058 | 1060 | 1098 |
| 7/21 | 1169 | 1169 | 1175 | 1224 |
| 7/31 | 1381 | 1371 | 1391 | 1435 |
| 8/04 | 1478 | 1467 | 1491 | 1535 |
| 8/11 | 1598 | 1587 | 1612 | 1663 |
| 8/18 | 1726 | 1699 | 1711 | 1780 |
| 8/25 | 1828 | 1798 | 1813 | 1879 |
| 9/02 | 1941 | 1930 | 1955 | 2023 |
| 9/09 | 2053 | 2046 | 2065 | 2142 |
| 9/16 | 2111 | 2106 | 2122 | 2203 |
| 9/23 | 2191 | 2183 | 2205 | 2277 |
| 9/30 | 2287 | 2281 | 2299 | 2380 |
| 10/07 | 2366 | 2363 | 2377 | 2471 |
| 10/14 | 2391 | 2391 | 2399 | 2502 |
| 10/21 | 2438 | 2451 | 2446 | 2554 |
| 10/31 | 2482 | 2481 | 2485 | 2604 |
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: 2006 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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