The UVM Apple Team Dr. Lorraine Berkett, Dr. Elena Garcia, Terence Bradshaw, and Jessica Reardon |
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, and Jessica Reardon |
The UVM Apple Program: Extension and Research for the commercial tree fruit grower in Vermont and beyond... |
L.P.Berkett, IPM Specialist
2001 Degree Day Accumulation for Arthropod Pests
2001 Estimated Degree-Day Accumulation (Base 50F, from Jan. 1) for Selected Sites |
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| Date | UVM Hort.Res.Center South Burlington Chittenden Co. Elev. 71 M | Shoreham Addison Co. Elev. 107 M |
South Hero Grand Isle Co. Elev. 54M |
East Dorset Bennington Co. Elev. 408 M |
Dummerston Windham Co. Elev. 171 M |
Franklin Franklin Co. Elev. 137 M |
04/14 |
0 | 2 |
0 |
1 |
9 | 0 |
04/22 |
0 | 8 |
5 | 6 | 20 | 5 |
04/26 |
39 | 49 |
38 | 44 | 68 | 33 |
04/29 |
46 | 57 |
46 | 50 | 77 | 40 |
05/05 |
125 | 137 |
126 | 121 | 162 | 114 |
05/06 |
129 | 141 |
129 | 124 | 166 | 117 |
05/12 |
196 | 206 |
197 | 180 | 233 | 182 |
05/19 |
233 | 242 |
234 | 205 | 267 | 216 |
05/23 |
275 | 282 |
277 | 235 | 300 | 258 |
05/27 |
319 | 320 |
324 | 258 | 329 | 304 |
06/02 |
351 | 353 |
354 | 283 | 364 | 331 |
06/09 |
420 | 421 |
424 | 336 | 434 | 397 |
06/16 |
562 | 556 |
565 | 454 | 568 | 538 |
06/23 |
694 | 684 |
698 | 568 | 702 | 665 |
06/30 |
831 | 819 |
836 | 695 | 847 | 801 |
| 07/07 | 927 | 913 | 929 | 774 | 944 | 890 |
| 07/14 | 1040 | 1025 | 1040 | 869 | 1057 | 996 |
| 07/21 | 1160 | 1145 | 1164 | 967 | 1173 | 1115 |
| 07/28 | 1300 | 1282 | 1306 | 1088 | 1314 | 1248 |
| 08/04 | 1450 | 1431 | 1457 | 1213 | 1453 | 1394 |
| 08/11 | 1637 | 1616 | 1643 | 1383 | 1642 | 1570 |
| 08/18 | 1774 | 1750 | 1783 | 1505 | 1781 | 1704 |
| 08/25 | 1902 | 1877 | 1911 | 1615 | 1914 | 1824 |
| 09/02 | 2011 | 1987 | 2021 | 1719 | 2041 | 1926 |
| 09/09 | 2118 | 2089 | 2130 | 1803 | 2142 | 2031 |
| 09/15 | 2183 | 2152 | 2194 | 1836 | 2209 | 2092 |
Degree Day and other weather information received from Skybit E-Weather Service: http://www.skybit.com/
1999 Guide to Arthropod Pest Events Based on Degree-Day Accumulations1 |
|
Estimated DD Base 50 F for Event |
|
| Green fruitworm 1st catch | 9-101 |
| Pear psylla adults active | 0-49 |
| Pear psylla 1st oviposition | 1-72 |
STLM - 1st adult catch |
38-116 |
TPB - 1st observed |
43-171 |
ERM - egg hatch observed |
100-168 |
STLM - 1st gen. adult peak flight |
108-216 |
CM - 1st adult catch |
182-322 |
STLM -1st sap-feeding mines observed |
187-323 |
PC - 1st oviposition scars observed |
249-323 |
OBLR - 1st adult catch, 1st summer brood |
484-612 |
STLM - 2nd gen. 1st adult catch |
558-750 |
OBLR - peak catch |
584-850 |
AMF - 1st capture |
741-993 |
STLM - 2nd gen. peak catch |
876-1240 |
OBLR - 1st catch, 2nd summer brood |
1568-1866 |
STLM - 3rd gen. peak catch |
1822-2152 |
1 Source of Estimated DD (Base 50F) for arthropod pest events: 1999 Pest Management Recommendations for Commercial Tree-Fruit Production, Cornell Coop.Ext. Pub., Table 15., Degree-Day Accumulations are from January 1 |
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Please send comments and suggestions to: lorraine.berkett@uvm.edu
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