Rhode Island Apple IPM

2001 - Current Pest Report - Apple Blotch leafminer
(set up traps at silver tip)

Tree stage for McIntosh
4/2/01 - Silver tip
4/9/01 - buds breaking
4/18/01 - 1/4 inch green
4/20 - 1/2 inch green
4/23/01 - tight cluster
5/1/01 - pink
5/3/01 - bloom
5/12/01 - petal fall?



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 4/10/01 4/18/01 4/23/01 4/27/01 4/30/01
Steere   5/ 6 traps 16/ 6 traps 100/ 6 traps 400/ 6 traps
D. Smith   0/ 2 traps   1 /4 traps
B. Smith       1/ 4 traps
Knight     9/ 4 traps  
Phillips     0/ 5 traps  
Lamore     31/ 4 traps  
Phantom         118/ 5 traps
East Farm 1/ 4 traps 42/ 4 traps 235/ 2 traps
  500/ 4 traps

Leafminer eggs on fruit cluster leaves (all leaves checked). Started seeing eggs on 4/23/01.
*I do not have a true threshold, but if I find more than a couple per 25 clusters I get nervous.*

orchard 4/23/01 4/27/01 4/30/01  
Steere 3 eggs/ 10 clusters 3 eggs/ 20 clusters    
Barden 0 eggs/ 35 clusters      
Phillips 0 eggs/ 10 clusters      
Hill 10 eggs/ 10 clusters      
Dermksian 0 eggs/ 20 clusters      
East Farm 20 eggs/ 10 clusters   25 eggs/10 clusters  
Lamore 8 eggs/ 25 clusters      
Sunset   0 eggs/ 30 clusters    
Jutras   0 eggs/ 20 clusters    
B. Smith   0 eggs/ 15 clusters    
O'Connor   0 eggs/ 15 clusters    
D. Smith   0 eggs/ 25 clusters    
Phantom     1 egg/ 20 clusters  
Jaswell   0 eggs/ 30 clusters    


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