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June 18th, 2001 Volume 10 No.14 Update on Pest Management and Crop Development

Coming Events & Current Situation
Insects
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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

Scaffolds 01 index

Current DD accumulations

43°F

50°F

(Geneva 1/1-6/18):

1093

678

(Geneva 1/1-6/18/2000):

1134

644

(Geneva "Normal"):

1054

672

(Highland 1/1-6/18):

1281

818

(Hudson 1/1-6/18):

1164

725

 

Coming Events:

Ranges:

American plum borer 1st flight subsides

848-1668

440-1205

Codling moth 1st flight peak

547-1326

307-824

Dogwood boer 1st catch

798-1295

456-812

Lesser appleworm 1st flight subsides

818-1548

444-999

Obliquebanded leafroller 1st flight peak

869-1548

506-987

Oriental fruit moth 1st flight subsides

781-1574

442-1026

Pandemis leafroller 1st flight peak

890-1144

506-987

Pear psylla 2nd brood eggs hatch

992-1200

609-763

Redbanded leafroller 2nd flight begins

1096-2029

656-1381

San Jose scale 1st gen. crawlers present

987-1247

569-784

TRAP CATCHES (Number/trap/day)

Geneva

6/7

6/11

6/14

6/18

Redbanded Leafroller

0.0

0.1

0.2

0.1

Spotted Tentiform Leafminer

8.5

4.0

39.3*

161

Oriental Fruit Moth

3.8

3.6

2.7

1.1

Lesser Appleworm

3.0

2.0

2.0

1.0

Codling Moth

5.2

1.5

2.7

6.5

San Jose Scale

0.3

0.1

0.0

0.0

American Plum Borer

0.2

0.8

0.2

0.4

Lesser Peachtree Borer

2.5

3.0

2.8

4.5

Peachtree Borer

0.2*

0.0

0.0

0.0

Dogwood Borer

-

0.0

0.0

0.0

Pandemis Leafroller

0.2

1.6

0.1

1.3

Obliquebanded Leafroller

0.0

7.4*

5.2

1.8

         

Highland (Dick Straub, Peter Jentsch):

5/29

6/4

6/11

6/18

Redbanded Leafroller

2.4

0.1

0.1

0.2

Spotted Tentiform Leafminer

1.1

0.5

10.4

88.6

Oriental Fruit Moth

0.7

0.3

0.1

0.3

Codling Moth

0.9

0.6

0.7

5.9

Lesser Appleworm

2.9

4.0

2.9

3.2

Variegated Leafroller

0.7

0.4

0.5

1.3

Obliquebanded Leafroller

0.0

0.2*

1.9

2.8

Tufted Apple Budmoth

0.0

0.0

0.0

0.3

Apple Maggot

0.0

0.0

0.0

<0.1*

         

Hudson (Steve McKay):

5/29

6/4

6/11

6/18

American Plum Borer

0.8

0.3

-

0.0

Oriental fruit moth

0.0

0.0

-

0.0

* = 1st catch

 

     

PEST FOCUS

Geneva:

Plum curculio oviposition developmental model is at 401 DD

 

(base 50°F); spray cutoff date is at 340 DD.

 

Codling Moth model is at 345 DD (base 50°F); 1st spray date at

 

250 DD.

 

Spotted tentiform leafminer 2nd flight began 6/14. DD (base

 

43°F) accumulated since then = 159.

 

1st Obliquebanded Leafroller caught in 6/7 in Wayne Co.

 

Although we preveiously reported 6/11 as the date of 1st

 

trap catch in Geneva, we're using 6/8 as the date from

 

which to accumulate degree days for purposed of the

 

sampling model because it is likely they were flying by

 

then (6/11 was our next scheduled monitoring date). DD

 

(base 43°F) accumulated since 6/8 in Geneva = 288. Sprays

 

directed at 1st egg hatch should begin by 360 DD.

Highland:

2nd generation Pear Psylla nymphs continuing to emerge.

 

Green Aphids at high numbers on pear terminals.

 

Near-peak flights of 2nd generation Spotted Tentiform

 

Leafminer, 2nd generation Codling Moth, and 1st generation

 

Obliquebanded Leafroller.

 

1st Apple Maggot adults caught on red baited spheres.

 

1st Obliquebanded Leafroller caught 6/4; DD (base 43 F)

 

accumulated since then = 357.

 

Codling Moth model is at 466.

 

 

 

Insects 6.18