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April 10th, 2000 Volume 9 No. 4 Update on Pest Management and Crop Development

Coming Events & Current Situation
Diseases
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 00 index

 

Current DD accumulations

43°F

50°F

(Geneva 1/1-4/10):

181

68

(Geneva 1999 1/1-4/10):

135

56

(Geneva "Normal" 1/1-4/10):

111

51

(Highland 1/1-4/10):

261

114

 

Coming Events:

Ranges:

 

Green apple aphids present

127-297

54-156

Green fruitworm 1st flight peak

64-255

19-108

Pear psylla 1st egg hatch

111-402

55-208

Pear thrips in pear buds

137-221

54-101

Redbanded leafroller 1st catch

32-480

5-251

Rosy apple aphid nymphs present

91-291

45-148

Spotted tentiform leafminer 1st catch

73-433

17-251

Tarnished plant bug adults active

71-536

34-299

McIntosh at half-inch green

112-221

54-102

Peach at half-inch green

154-230

61-107

Pear at green cluster

188-292

68-138

Plum at green cluster

170-282

75-138

Sweet cherry at bud burst

135-235

53-101

Tart cherry at bud burst

135-279

53-138

Phenologies (Geneva): Apple (McIntosh):

Quarter-Inch Green

Apple (Red Delicious):

Green Tip

Pear (Bartlett):

Bud Burst

Tart Cherry (Montmorency):

Swollen Bud

Sweet Cherry:

Swollen Bud

Peach:

Quarter-Inch Green

Plum:

Bud Burst

(Highland): Apple (McIntosh):

Tight Cluster

Pear (Bartlett):

Early Green Cluster

Peach:

25% Bloom

Apricot:

Petal Fall

Plum (Stanley):

Green Cluster

TRAP CATCHES (Number/trap/day)

Geneva

3/30

4/3

4/6

4/10

Green Fruitworm

-

0.1*

0.0

0.0

Redbanded Leafroller

-

0.0

0.0

0.0

Spotted Tentiform Leafminer

-

0.0

0.0

0.0

Highland (Dick Straub, Peter Jentsch):

3/20

3/27

4/3

4/10

Green Fruitworm

0.0

1.4*

0.4

0.0

Redbanded Leafroller

0.0

0.5*

3.8

4.7

Spotted Tentiform Leafminer

0.0

0.0

0.1*

2.4

Pear Psylla (eggs/100 buds)

3.0*

42.0

13.0

40.0

Pear Psylla nymphs/100 clusters

-

-

-

1.0*

* = 1st catch

 

PEST FOCUS

Highland:

1st Pear Psylla nymphs and Pear Thrips observed.

 

Tarnished Plant Bug observed on Bartlett and Bosc pears.

 

Rose Leafhopper observed on multiflora rose.

> 4.10 Diseases