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Rhode Island Apple IPM
1999 - Current Pest Report - European Apple Sawfly
Tree stage for McIntosh:
4/6/99 - green tip
4/8/99 - half inch green
4/14/99 - half inch green plus 1-2 leaves folded back
4/16/99 - nearly tight cluster
4/21/99 - tight cluster
4/26/99 - loose cluster
5/1/99 - pink
5/5/99 - early bloom
5/6/99 - full bloom
5/11/99 - late bloom
5/13/99 - McIntosh petal fall
Trap captures above threshold in 2 blocks
European apple sawfly trap captures
Average number of adult European apple sawfly adults caught on white
sticky traps in each monitored block. Averages are cummulative.
**Threshold = 5/trap of no prebloom insecticide; 9/ trap if applied prebloom
insecticide**
| orchard |
4/28/99 |
5/5/99 |
5/11/99 |
|
| Steere |
0 |
3/trap |
7/trap |
|
| Piti |
|
2/trap |
9/trap |
|
| Jaswell |
0 |
1/trap |
33/trap |
|
| Smith |
0 |
3/trap |
67/trap |
|
| Phantom |
0 |
0/trap |
63/trap |
|
| Hill |
0 |
3/trap |
19/trap |
|
| Dermksian |
0 |
2/trap |
13/trap |
|
| Lamore |
0 |
62/trap |
200/trap |
|
| Barden |
0 |
3/trap |
4/trap |
|
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