July 15 IPM Conference Call Summary

John’s updates

1. There is widespread occurrence of PC, but nowhere has there been large numbers
2. PLH damage is ubiquitous
3. Japanese beetle problems are increasing
4. Wooley apple aphid and green apple aphid populations are substantial. It is difficult to predict when parasites will bring them down.
5. For the sooty blotch/fly speck model, most orchards are beyond the 250 leaf wetness hours from petal fall.
1. The importance of scouting for damage between the first and second flights of CM
2. Checking for PC damage in orchards using CM materials not active against PC
3. San Jose scale: taping branches to monitor crawlers, strategy for control
4. Scouting for green apple aphid predators and for mite predators
5. Scouting for rust mite damage
6. Japanese Beetle: life cycle of, best time to control, spraying more than once for, relative easiness to kill, effective materials for, trapping out
7. Choosing materials for sooty blotch/fly speck with scab fungicide resistance in mind
8. Checking for leaf roller larval hatch
9. Differentiating potato leaf hopper damage from white apple leaf hopper damage
10. The importance of checking for borers
11. Number of rosy apple aphid generations per season
12. Checking to see if Rosy apple aphid wooley apple aphid populations are actually alive
If you would like to hear the call recording, dial (641) 715-3436, then enter the access code: 516817. You will be able to hear the recording on the telephone until it is replaced by the next week’s call. You can also hear this recording anytime by downloading the audio file below.

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