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WOOLLY ASH APHID

IPM

woolly ash aphid
PNWNurseryIPM    

Introduction

Biology

Damage

Biological Control

Chemical Control

References

Terminology

Acknowledgements

 

 

 

 

 

 

Chemical Control

Some factors to consider with chemical control are
· mode of action,
· residual,
· potential for phytotoxicity,
· selectivity,
· application efficiency,
· re-entry interval, and
· toxicity.

More selective aphidicides may be indicated for sites using biological control or interested in conserving natural enemies. Oils and soaps, though they can kill on contact, have no residual, leaving immigrating natural enemies unharmed. Although homemade concoctions of oil and soap applications may very well have an effect on the aphids, the base products are not formulated for plant use and may cause phytotoxicity. It is also important for applicators at commercial nurseries to use pesticides legally registered by the EPA and licensed in their state.

Toxicity and re-entry levels vary tremendously.

Check the PNW Insect Management Hanbook for current recommendations for control of aphids on nursery stock.

 

 

 

Last modified - 3/15/05

 

Comments or questions? Contact Robin Rosetta

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