Rhode Island Apple IPM

1999 - Current Pest Report - Apple Blotch leafminer

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


!!!!!Leafminers above threshold in all commercial blocks!!!!!

5/13/99 - First see sap feeding mines
5/27/99 - First see tissue feeding mines
6/3/99 - First see pupae in mines
6/3/99 - First see parasitized mines
6/7/99 - First see empty pupal case - beginning of second generation moth flight.


Apple blotch leafminer trap captures

The average number of adult leafminers caught per trap in each monitored block. The averages are cummulative.
* Threshold = 8/trap by tight cluster or 21/trap by pink*

orchard 4/12/99 4/19/99 4/26/99 5/3/99 5/10/99
Steere 6/trap 26/trap 100/trap 124/trap
Knight 40/trap 190/trap 210/trap
Jaswell 7/trap 36/trap 38/trap
Smith 27/trap 107/trap 180/trap 220/trap
Phantom 75/trap 125/trap 225/trap 275/trap
Hill 150/trap 250/trap 350/trap 400/trap
Barden 3/trap 45/trap 115/trap 125/trap
Phillips .8/trap 45/trap 100/trap 120/trap
Dermksian 3/trap 8/trap 10/trap
Lamore 15.5/trap 51/trap 65/trap
East Farm 100/trap 130/trap





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