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The UVM Apple Team

Dr. Lorraine Berkett, 

Terence Bradshaw,  Sarah Kingsley-Richards, Morgan Cromwell

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The UVM Apple Program:

Extension and Research for the commercial tree fruit grower in Vermont and beyond...

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Vermont Apple IPM Focus

  L.P.Berkett, IPM Specialist


2010 Degree Day Accumulation for Arthropod Pests

2010  Estimated Degree-Day Accumulation (Base 50F, from Jan. 1) for Selected Sites

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

East Dorset
Bennington Co.

Elev. 408 M

4/04 52 58 47 56 44
4/10 82 93 74 100 78

4/17

93 107 84 117 89

4/24

115 132 105 144 106

5/01

140 157 127 175 127

5/08

214 235 197 261 198

5/15

236 257 218 285 216

5/22

308 330 291 354 276
6/01 492 511 475       539 439

6/08

585 612 566 656 537
6/15 656 680 640 733 595
6/22 770 795 758 856 696
6/29 901 930 887 1007 825
7/06 1034 1058 1023 1142 940
7/14 1255 1279 1245 1365 1142
7/24 1486 1512 1473 1605 1357
7/31 1607 1634 1595 1744 1471
8/07 1750 1778 1733 1893 1601
8/14 1893 1926 1873 2047 1737
8/18 1974 2005 1954 2129 1809
8/31 2186 2217 2168 2353 1999
9/04 2291 2270 2321 2460 2093
9/11 2378  2354 2406 2553 2168
9/18 2426 2402 2455 2611 2207
9/25 2498 2531 2470 2703 2277
10/02 2571 2615 2543 2800 2353
10/09 2601 2641 2566 2825 2371
10/16 2616 2657 2581 2846 2383
10/23 2621 2663 2586 2854 2387
           

Degree Day and other weather information received from Skybit E-Weather Service: http://www.skybit.com/

2010 Guide to Arthropod Pest Events Based on Degree-Day Accumulations1

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

39-113

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

190-330

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

479-605

STLM - 2nd gen. 1st adult catch

560-740

SJS - 1st crawlers observed 619-757

OBLR - peak catch

565-827

AMF - 1st capture

750-1034

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 2010 New England Tree Fruit Management Guide


Please send comments and suggestions tolorraine.berkett@uvm.edu

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