UC IPM Makes It Happen
 Hackberry
aphid: Pest Note update and ongoing research
The
Asian hackberry woolly aphid was introduced into California in 2002.
It spread quickly throughout the state, infesting Chinese
hackberry trees.
The aphids produce excessive amounts of honeydew, creating a
nuisance and prompting pesticide applications to trees that had been
relatively
pest- and pesticide-free.
Long-term strategies such as biological
control and preventive aphid control need further research. Mary Louise Flint, entomologist and IPM Education and Publications
director, and Steve Dreistadt, UC IPM senior writer, are studying
the influence
of irrigation practices, reduced pesticide rates, and treatment
timing for
aphids and scales infesting hackberry trees on the UC Davis
campus. Their study is coordinated with hackberry aphid research by Andrew
Lawson,
assistant professor, California State University, Fresno, and
Pamela Geisel, environmental
horticulture advisor, UCCE, Fresno. University of California's
Elvenia J. Slosson Endowment Fund and the UC Exotic/Invasive
Pests and Disease
Research Program are funding their research at several Central
Valley sites.
Pest Note: Hackberry Woolly Aphid (ANR 74111)
has been revised to summarize expert observations and preliminary
results of
research on this new
exotic pest. The revised Pest Note provides more information
on integrating
aphid
control with management of less-widespread hackberry problems:
citricola scale and an unidentified malady believed to be
a new vascular wilt
disease.
|
2005
Annual Report