[CANUFNET] Aphid thresholds

[Ken Snowden]

Good morning all,

 

After a trying year with a prolonged drought, we saw a dramatic increase
in calls regarding aphids and issues with the accompanying honeydew.  We
are seeking input on thresholds for aphid damage on street trees to
develop a baseline for  our IPM program.  I have received information
from a few neighboring cities, and have found varying responses that
range from budget availability to number of phone calls.  Most online
information I find tends to lean towards agricultural crops rather than
urban forestry.  We want to help educate our residents and spray only as
a last resort but need a well-founded number to use as a baseline.  City
of Surrey responded that they use number of aphids per leaf...what are
other municipalities using?

 

Your help would be appreciated,

 

Ken Snowden

Arbourist II

City of Abbotsford Parks, Recreation and Culture

Phone: (604) 853 5485 ext. 5886

Cell: (604) 626 3945 

Email: ksnowden at abbotsford.ca <mailto:ksnowden at abbotsford.ca> 

 

'To exist as a nation, to prosper as a state, to live as a people, we
must have trees'

Theodore Roosevelt

 

 

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