Rhode Island Apple IPM

2003 - Current Pest Report - Apple Blotch leafminer
(set up traps at silver tip)

Tree stage for McIntosh
green tip 4/14/03
half inch green 4/21/03
tight cluster 4/28/03
full pink 5/5/03
bloom 5/9/03
petal fall 5/18/03

 

- See leafminer eggs on underside of leaves 5/5/03
- See hatched leafminer eggs in Newport on 5/8/03 (and trees here are only at Pink)
-See adults still in trees on 5/19/03



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 4/16/03 4/21/03 4/28/03 5/5/03 5/12/03
East Farm 0/ 3 traps 10/ 3 traps 29/3 traps*   25/ 3 traps
Lamore 0/ 4 traps      
Steere 0/ 3 traps 0/ 5 traps   18/ 5 traps
Jaswell   0/ 4 traps   10/ 4 traps
G. Smith   0/ 3 traps   12/ 4 traps
D. Smith   1/3 traps 7/ 3 traps   110/ 4 traps*
Phillips   0/ 2 traps   66/ 5 traps  
B. Smith   0/ 4 traps   1/ 3 traps  
Elwood       1/4 traps  
Knight   0/ 4 traps      

* Above threshold

Leafminer eggs. Started seeing eggs on 5/5/03
I do not have a true threshold, but if I find more than a couple per 25 clusters I get nervous.

 

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