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Septemeber 18th, 2000 Volume 9 No. 27 Update on Pest Management and Crop Development

Insects
ONE FOR THE BOOKS
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Scaffolds is published weekly from March to September by Cornell University -- NYS Agricultural Experiment Station (Geneva), and Ithaca -- with the assistance of Cornell Cooperative Extension.

New York field reports welcomed. Send submissions by 3 p.m. Monday to:

Scaffolds Fruit Journal

Editors: A. Agnello, D. Kain

Dept. of Entomology, NYSAES

Geneva, NY 14456-0462

Phone: 315-787-2341 FAX: 315-787-2326

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ONE FOR THE BOOKS

(Dave Kain dpk1@nysaes.cornell.edu& Art Agnello ama4@nyseas.cornell.edu, Entomology, Geneva)

It all seems something of a chilly memory now, but this season actually started out to be quite a bit warmer than last year, and significantly warmer than the long-term average. A look at our degree-day accumulations in the "Upcoming Pest Events" section of the first several issues shows that it wasn't until well into June that we fell behind these benchmark comparisons, a trend reflected in the pest events and crop development markers that we annually keep track of. You'll notice that many of the events below having a "Normal" occurrence before mid-June were ahead of schedule this year, and those normally occurring after then were often quite delayed in 2000.

Following are comparative listings of some of the pest events that occured this season (in Geneva) with calendar and degree-day normals. The values and dates are given +/- one standard deviation; i.e., events should occur within the stated range approximately 7 years out of 10. An asterisk (*) signifies that a record was set or tied.

DATE

DEGREE DAYS (BASE 43° F)

EVENT

Normal (+/-days)

2000

Normal (+/-DD)

2000

APPLE MAGGOT

       

1st catch

28-Jun(+/-8)

27-Jul

1354(+/-167)

2057

Peak

4-Aug(+/-13)

11-Aug

2392(+/-212)

2482

Subsiding

3-Sep(+/-9)

24-Aug

3115(+/-282)

2754

AMERICAN PLUM BORER

       

1st catch

18-May(+/-7)

8-May

423(+/-108)

411

1st flight peak

2-Jun(+/-6)

26-May

712(+/-146)

677

1st flight subsiding

29-Jun(+/-7)

29-Jun

1359(+/-214)

1397

2nd flight start

10-Jul(+/-4)

24-Jul

1611(+/-241)

1978

2nd flight peak

27-Jul(+/-6)

21-Aug

2171(+/-221)

2688

CODLING MOTH

       

1st catch

18-May(+/-8)

19-May

481(+/-103)

600

1st flight peak

4-Jun(+/-11)

12-Jun

803(+/-187)

985

2nd flight start

17-Jul(+/-14)

27-Jul

1863(+/-338)

2057

2nd flight peak

7-Aug(+/-15)

7-Aug

2413(+/-427)

2360

2nd flight subsiding

8-Sep(+/-14)

 

3261(+/-340)

 

GREEN FRUITWORM

       

1st catch

4-Apr(+/-8)

3-Apr

84(+/-34)

163

Peak

14-Apr(+/-11)

17-Apr

139(+/-53)

211

Subsiding

6-May(+/-11)

8-May

336(+/-114)

411

LESSER APPLEWORM

       

1st catch

11-May(+/-9)

4-May

3854(+/-154)

299

1st flight peak

22-May(+/-7)

8-May

571(+/-169)

411

1st flight subsiding

19-Jun(+/-9)

22-Jun

1158(+/-238)

1219

2nd flight starts

10-Jul(+/-12)

10-Jul

1649(+/-370)

1656

LESSER PEACHTREE BORER

       

1st catch

26-May(+/-9)

26-May

575(+/-149)

677

Flight subsiding

9-Sep(+/-6)

5-Sep

3182(+/-233)

3056

OBLIQUEBANDED LEAFROLLER

       

1st catch

10-Jun(+/-5)

8-Jun

918(+/-88)

873

1st flight peak

19-Jun(+/-9)

19-Jun

1141(+/-196)

1144

2nd flight begins

7-Aug(+/-10)

7-Aug

2495(+/-187)

2360

ORIENTAL FRUIT MOTH

       

1st catch

1-May(+/-8)

4-May

289(+/-96)

299

1st flight peak

14-May(+/-11)

8-May

420(+/-97)

411

2nd flight begins

1-Jul(+/-5)

26-Jun

1436(+/-151)

1322

2nd flight peak

9-Jul(+/-11)

20-Jul

1768(+/-392)

1895

3rd flight begins

10-Aug(+/-9)

7-Aug

2528(+/-233)

2360

3rd flight peak

25-Aug(+/-16)

 

2931(+/-333)

 

PEACHTREE BORER

       

1st catch

16-Jun(+/-11)

29-Jun

1023(+/-280)

1397

REDBANDED LEAFROLLER

       

1st catch

17-Apr(+/-8)

17-Apr

179(+/-84)

211

1st flight peak

4-May(+/-9)

11-May

307(+/-81)

488

2nd flight begins

2-Jul(+/-6)

26-Jun

1478(+/-219)

1322

2nd flight peak

13-Jul(+/-6)

13-Jul

1771(+/-278)

1727

2nd flight subsiding

4-Aug(+/-11)

31-Jul

2381(+/-258)

2173

3rd flight begins

20-Aug(+/-11)

24-Aug

2787(+/-175)

2754

3rd flight peak

28-Aug(+/-13)

 

2976(+/-259)

 

SAN JOSE SCALE - adult males

       

1st catch

17-May(+/-8)

8-May

481(+/-113)

411

1st flight peak

30-May(+/-8)

11-May

658(+/-73)

488

2nd flight peak

7-Aug(+/-10)

7-Aug

2335(+/-234)

2360

SPOTTED TENTIFORM LEAFMINER

       

1st catch

19-Apr(+/-7)

17-Apr

174(+/-65)

211

1st flight peak

7-May(+/-7)

4-May

337(+/-85)

299

2nd flight begins

14-Jun(+/-7)

15-Jun

1064(+/-123)

1045

2nd flight peak

8-Jul(+/-10)

22-Jun

1631(+/-240)

1219

3rd flight begins

7-Aug(+/-7)

11-Aug

2502(+/-170)

2482

3rd flight peak

22-Aug(+/-9)

5-Sep

2862(+/-201)

3056

CROP PHENOLOGY

       

APPLE (MCINTOSH)

       

Green tip

11-Apr(+/-6)

3-Apr

114(+/-38)

163

Half-inch green

20-Apr(+/-7)

17-Apr

172(+/-27)

211

Tight cluster

27-Apr(+/-7)

24-Apr

231(+/-21)

228

Pink

4-May(+/-6)

4-May

301(+/-29)

299

Bloom

10-May(+/-7)

8-May

389(+/-51)

411

Petal fall

18-May(+/-6)

15-May

493(+/-45)

549

PEAR (BARTLETT)

       

Bud burst

22-Apr(+/-7)

17-Apr

165(+/-48)

211

Green cluster

1-May(+/-7)

24-Apr

241 (+/-27)

228

White bud

5-May(+/-7)

4-May

299(+/-45)

299

Bloom

8-May(+/-8)

8-May

348(+/-50)

411

Petal fall

16-May(+/-8)

11-May

444(+/-55)

488

SWEET CHERRY (WINDSOR)

       

Bud burst

21-Apr(+/-8)

17-Apr

171(+/-26)

211

White bud

30-Apr(+/-7)

24-Apr

218(+/-28)

228

Bloom

5-May(+/-6)

1-May

266(+/-32)

266

Petal fall

13-May(+/-5)

8-May

383(+/-50)

411

Fruit set

17-May(+/-5)

11-May

445(+/-45)

488

TART CHERRY (MONTMORENCY)

       

Bud burst

26-Apr(+/-7)

24-Apr

210(+/-41)

228

White bud

7-May(+/-7)

1-May

275(+/-23)

266

Bloom

10-May(+/-6)

4-May

356(+/-52)

299

Petal fall

19-May(+/-6)

8-May

467(+/-54)

411

Fruit set

26-May(+/-7)

11-May

565(+/-53)

488

 

end of this issue

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