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