May 10, 1999 Volume 8 No. 8
|
|
|
43F |
50F |
|
|
Current DD accumulations (Geneva 1/1-5/10): |
377 |
185 |
|
(Geneva 1998 1/1-5/10): |
508 |
275 |
|
(Geneva "Normal" 1/1-5/10): |
337 |
157 |
|
(Hudson 3/17-5/10): |
410 |
193 |
|
Coming Events: |
Ranges: |
|
|
Codling moth 1st catch |
273-805 |
141-491 |
|
Oriental fruit moth 1st flight peak |
259-606 |
96-298 |
|
Pear psylla 1st hatch |
111-402 |
55-208 |
|
Plum curculio adults active |
135-394 |
49-225 |
|
Redbanded leafroller 1st flight peak |
180-455 |
65-221 |
|
Rose leafhopper nymphs on multiflora rose |
188-402 |
68-208 |
|
Rosy apple aphid nymphs present |
91-291 |
45-148 |
|
San Jose scale 1st catch |
189-704 |
69-385 |
|
Spotted tentiform leafminer 1st oviposition |
141-319 |
48-154 |
|
Spotted tentiform leafminer 1st flight peak |
180-544 |
65-275 |
|
Spotted tentiform leafminer sap-feeders present |
295-628 |
130-325 |
|
Tarnished plant bug adults active |
71-536 |
34-299 |
|
McIntosh at petal fall |
418-563 |
210-317 |
|
Peach at shuck split |
362-518 |
174-287 |
|
Pear at petal fall |
343-544 |
144-275 |
|
Plum at petal fall |
277-466 |
113-252 |
|
Sweet cherry at fruit set |
381-518 |
171-287 |
|
Tart cherry at petal fall |
385-563 |
185-289 |
|
Phenologies (Geneva): |
Apple (McIntosh): |
Full Bloom |
|
(Delicious): |
King Bloom |
|
|
Pear (Bartlett) : |
25% Petal Fall |
|
|
Sweet Cherry (Windsor): |
Petal Fall |
|
|
Tart Cherry (Montmorency): |
25% Petal Fall |
|
|
Peach: |
Petal Fall |
|
|
(Highland): |
Apple (McIntosh): |
30% Petal Fall |
|
Pear (Bartlett): |
Petal Fall |
|
|
Apricot: |
Fruit 1 cm diameter |
|
|
Plum (Stanley): |
Shuck Split |
| Geneva: |
4/26 |
4/29 |
5/3 |
5/6 |
5/10 |
|
Green Fruitworm |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
|
Spotted Tentiform Leafminer |
1.8 |
333 |
349 |
499 |
663 |
|
Redbanded Leafroller |
1.3 |
2.2 |
11.5 |
18.6 |
5.6 |
|
Oriental Fruit Moth |
0.3 |
0.5 |
72 |
101 |
51 |
|
Lesser Appleworm |
0.0 |
0.0 |
14.6* |
12.8 |
18.1 |
|
San Jose Scale |
- |
- |
0.0 |
0.0 |
0.0 |
|
Codling Moth |
- |
- |
- |
0.0 |
0.0 |
|
American Plum Borer |
- |
- |
- |
- |
0.4* |
|
Lesser Peachtree Borer |
- |
- |
- |
- |
0.0 |
| Highland (Dick Straub, Peter Jentsch): |
4/12 |
4/19 |
4/26 |
5/3 |
5/10 |
|
Green Fruitworm |
0.5 |
0.0 |
0.0 |
0.0 |
0.0 |
|
Spotted Tentiform Leafminer |
2.4 |
9.1 |
13.2 |
19.9 |
16.3 |
|
Redbanded Leafroller |
10.7 |
20.8 |
20.2 |
18.4 |
14.9 |
|
Oriental Fruit Moth |
- |
- |
0.2* |
3.4 |
5.6 |
|
Codling Moth |
- |
- |
0.0 |
0.1* |
0.1 |
|
Lesser Appleworm |
- |
- |
- |
0.1* |
0.2 |
|
European Red Mite (#/leaf) |
- |
- |
0.2* |
10.0 |
18.0 |
|
San Jose Scale |
- |
- |
- |
- |
0.0 |
|
White Apple Leafhopper Nymphs |
- |
- |
- |
- |
0.0 |
* = 1st catch
|
Geneva: European Red Mite nymphs noted 5/5. American Plum Borer 1st catch 5/10. |
|
Hudson: Spotted Tentiform Leafminer and Oriental Fruit Moth numbers high. American Plum Borer 1st catch in peach and cherry. |
(Dave Rosenberger, dar22@cornell.edu Plant Pathology, Highland)
The first primary scab lesions appeared on Friday, May 7, on unsprayed trees at the Hudson Valley Lab. These lesions resulted from the infection period of April 22-23. Additional scab infection periods occurred May 3-4 (12 hr, 53°F, 0.1 inch rain) and May 8-9 (33 hr, 59°F, 0.25 inch rain). Spotty showers occurred throughout the Hudson Valley last week. Some areas received more than an inch of rain, but drought conditions still prevail in much of the lower Hudson Valley. At the Hudson Valley Lab, total accumulated rainfall since April 1 is only 1.4 inches, and soil water reserves were relatively low at the beginning of April. The supply of apple scab ascospores is usually depleted by about petal fall, but some later discharges are likely this year because drought conditions have delayed both spore discharge and disintegration of the overwintering leaves on the orchard floor.
| Past Coming Events: 4/5 | 4/12 | 4/19 | 4/26 | 5/3 |
