September 14, 1999 Volume 8 No. 26

Insects
IT'S ALL RELATIVE

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

Scaffolds 99 index

IT'S ALL RELATIVE

(Dave Kain dpk1@nysaes.cornell.edu , Entomology, Geneva)

Stop me if this sounds familiar - Last season got off to a roaring start with highs in the 80's recorded in March, and we were about 10-14 days ahead of normal the entire season. Although we started out a bit more slowly this year (didn't hit the 80's until May, which still seems a little early) degree day accumulations indicate that we were again close to 2 weeks ahead of "normal" We may have to change our definition of normal, eh? The big difference between this season and last was the drought, which continues in our neck of the woods.

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 for early occurrence was set or tied.

 

APPLE MAGGOT

DATE

DEGREE DAYS ( BASE 43°F)

EVENT

Normal (+/- days)

1999

Normal (+/-dd)

1999

1st catch

28-Jun(+/-8)

28-Jun

1351(+/-171)

1420

Peak

4-Aug(+/-14)

29-Jul

2365(+/-189)

2843

Subsiding

4-Sep(+/-10)

30-Aug

3065(+/-286)

3162

AMERICAN PLUM BORER

DATE

DEGREE DAYS (BASE 43°F)

EVENT

Normal (+/- days)

1999

Normal (+/-dd)

1999

1st catch

18-May(+/-6)

13-May

423(+/-112)

399

1st flight peak

3-Jun(+/-6)

1-Jun

703(+/-146)

749

1st flight subsiding

30-Jun(+/-7)

17-Jun

1367(+/-218)

1145

2nd flight start

11-Jul(+/-4)

1-Jul

1613(+/-250)

1499

2nd flight peak

27-Jul(+/-6)

19-Jul

2170(+/-225)

2039

CODLING MOTH

DATE

DEGREE DAYS (BASE 43°F)

EVENT

Normal (+/- days)

1999

Normal (+/-dd)

1999

1st catch

19-May(+/-7)

13-May

484(+/-106)

399

1st flight peak

4-Jun(+/-11)

17-May

794(+/-194)

457*

2nd flight start

19-Jul(+/-14)

6-Jul

1900(+/-340)

1668

2nd flight peak

11-Aug(+/-8)

8-Jul

2503(+/-340)

1729

2nd flight subsiding

12-Sep(+/-10)

30-Aug

3331(+/-283)

3162

 

GREEN FRUITWORM

DATE

DEGREE DAYS BASE 43°F)

EVENT

Normal (+/- days)

1999

Normal (+/-dd)

1999

1st catch

4-Apr(+/-9)

1-Apr

80(+/-29)

62

Peak

15-Apr(+/-11)

8-Apr

138(+/-56)

117

Subsiding

7-May(+/-11)

26-Apr

342(+/-114)

183

LESSER APPLEWORM

DATE

DEGREE DAYS (BASE 43°F)

EVENT

Normal (+/- days)

1999

Normal (+/-dd)

1999

1st catch

12-May(+/-9)

3-May

394(+/-160)

248

1st flight peak

23-May(+/-8)

17-May

572(+/-179)

457

1st flight subsiding

20-Jun(+/-10)

10-Jun

1154(+/-246)

982

2nd flight starts

10-Jul(+/-14)

12-Jul

1575(+/-405)

1814

LESSER PEACHTREE BORER

DATE

DEGREE DAYS BASE 43°F)

EVENT

Normal (+/- days)

1999

Normal (+/-dd)

1999

1st catch

27-May(+/-8)

17-May

584(+/-150)

457

Flight subsiding

9-Sep(+/-7)

7-Sep

3129(+/-224)

3372

OBLIQUEBANDED LEAFROLLER

DATE

DEGREE DAYS (BASE 43°F)

EVENT

Normal (+/- days)

1999

Normal (+/-dd)

1999

1st catch

11-Jun(+/-5)

2-Jun

921(+/-88)

775

1st flight peak

20-Jun(+/-8)

7-Jun

1158(+/-191)

890

2nd flight begins

7-Aug(+/-10)

29-Jul

2496(+/-192)

2350

 

ORIENTAL FRUIT MOTH

DATE

DEGREE DAYS BASE 43°F)

EVENT

Normal (+/- days)

1999

Normal (+/-dd)

1999

1st catch

2-May(+/-7)

22-Apr

297(+/-95)

173

1st flight peak

15-May(+/-11)

6-May

431(+/-96)

310

2nd flight begins

1-Jul(+/-6)

28-Jun

1428(+/-155)

1420

2nd flight peak

10-Jul(+/-11)

12-Jul

1777(+/-415)

1814

3rd flight begins

12-Aug(+/-9)

2-Aug

2545(+/-257)

2481

3rd flight peak

25-Aug(+/-16)

19-Aug

2894(+/-322)

2884

PEACHTREE BORER

DATE

DEGREE DAYS (BASE 43°F)

EVENT

Normal (+/- days)

1999

Normal (+/-dd)

1999

1st catch

17-Jun(+/-11)

7-Jun

1028(+/-293)

890

REDBANDED LEAFROLLER

DATE

DEGREE DAYS (BASE 43°F)

EVENT

Normal (+/- days)

1999

Normal (+/-dd)

1999

1st catch

18-Apr(+/-7)

5-Apr

181(+/-85)

98

1st flight peak

4-May(+/-10)

6-May

302(+/-82)

310

2nd flight begins

2-Jul(+/-6)

28-Jun

1481(+/-230)

1420

2nd flight peak

14-Jul(+/-6)

8-Jul

1776(+/-302)

1729

2nd flight subsiding

4-Aug(+/-12)

2-Aug

2361(+/-266)

2481

3rd flight begins

21-Aug(+/-11)

10-Aug

2776(+/-181)

2742

3rd flight peak

27-Aug(+/-13)

23-Aug

2931(+/-244)

2975

SAN JOSE SCALE - adult males

DATE

DEGREE DAYS (BASE 43°F)

EVENT

Normal (+/- days)

1999

Normal (+/-dd)

1999

1st catch

17-May(+/-8)

17-May

480(+/-117)

457

1st flight peak

1-Jun(+/-7)

17-May*

672(+/-52)

457*

2nd flight peak

9-Aug(+/-11)

5-Aug

2283(+/-249)

2558

SPOTTED TENTIFORM LEAFMINER

DATE

DEGREE DAYS (BASE 43°F)

EVENT

Normal (+/- days)

1999

Normal (+/-dd)

1999

1st catch

19-Apr(+/-6)

19-Apr

175(+/-66)

160

1st flight peak

7-May(+/-7)

10-May

332(+/-87)

377

2nd flight begins

15-Jun(+/-7)

10-Jun

1065(+/-127)

982

2nd flight peak

9-Jul(+/-10)

6-Jul

1648(+/-237)

1668

3rd flight begins

8-Aug(+/-7)

29-Jul

2510(+/-175)

2350

3rd flight peak

22-Aug(+/-10)

19-Aug

2857(+/-212)

2884

 

APPLE (MCINTOSH)

DATE

DEGREE DAYS BASE 43°F)

CROP PHENOLOGY

Normal (+/- days)

1999

Normal (+/-dd)

1999

Green tip

12-Apr(+/-6)

12-Apr

113(+/-40)

135

Half-inch green

22-Apr(+/-7)

19-Apr

173(+/-28)

160

Tight cluster

28-Apr(+/-7)

3-May

230(+/-22)

248

Pink

4-May(+/-7)

6-May

299(+/-31)

310

Bloom

11-May(+/-7)

10-May

386(+/-53)

377

Petal fall

19-May(+/-6)

17-May

494(+/-47)

457

PEAR (BARTLETT)

DATE

DEGREE DAYS BASE 43°F)

CROP PHENOLOGY

Normal (+/- days)

1999

Normal (+/-dd)

1999

Bud burst

23-Apr(+/-6)

19-Apr

165(+/-51)

160

Green cluster

2-May(+/-5)

3-May

241 (+/-29)

248

White bud

6-May(+/-7)

5-May

301(+/-49)

286

Bloom

9-May(+/-8)

6-May

352(+/-51)

310

Petal fall

16-May(+/-8)

17-May

443(+/-58)

457

SWEET CHERRY (WINDSOR)

DATE

DEGREE DAYS (BASE 43°F)

CROP PHENOLOGY

Normal (+/- days)

1999

Normal (+/-dd)

1999

Bud burst

24-Apr(+/-5)

15-Apr

173(+/-28)

145

White bud

1-May(+/-5)

29-Apr

222(+/-29)

200

Bloom

6-May(+/-5)

3-May

267(+/-34)

248

Petal fall

14-May(+/-5)

13-May

380(+/-55)

399

Fruit set

19-May(+/-5)

17-May

443(+/-50)

457

 

TART CHERRY (MONTMORENCY)

DATE

DEGREE DAYS (BASE 43°F)

CROP PHENOLOGY

Normal (+/- days)

1999

Normal (+/-dd)

1999

Bud burst

28-Apr(+/-6)

22-Apr

212(+/-42)

173

White bud

9-May(+/-4)

3-May

279(+/-23)

248

Bloom

12-May(+/-4)

6-May

364(+/-53)

310

Petal fall

20-May(+/-5)

17-May

463(+/-57)

457

Fruit set

29-May(+/-5)

24-May

555(+/-61)

592

 

 

Past Insect columns: | 5/3 | 5/10 | 5/17 | 5/24 | 6/1 | 6/7 | 6/14 | 6/21 | 6/28 | 7/6 | 7/12 | 7/19 | 7/26 | 8/2 | 8/9| 8/16 | 8/23 | 8/30 | 9/7

End of this issue: Scaffolds 1999 Index