No. 18/October 16, 2009

Pest Management Handbook Revision
The Illinois Commercial Landscape and Turfgrass Pest Management Handbook is being revised. It is expected that it will be available for purchase in late January or in February of 2010.

Mole Cricket Update
After the article on northern mole crickets in the previous issue of this newsletter, damage from this insect has been reported in several other states including Kentucky, Pennsylvania, and Connecticut.

Pyrethroid Insecticide Poisoning Study
There has been a recent study published on the incidence and severity of pyrethrin and pyrethroid insecticide illnesses. The study covers reported illnesses from 2001 through 2005 in the states of Oregon and Washington.

Oak Leaf Spot
Tubakia leaf spot infects oak and sounds relatively harmless. After all, it is only a leaf spot disease and usually on large oak trees. This year, however, we saw more of this disease than any of the Plant Clinic staff can ever remember seeing in the past.

Thousand Cankers Disease of Black Walnut
Thousand cankers disease of black walnut is a lethal insect-disease complex affecting various walnut species. It has not yet been found in Illinois.

Crabapple Scab Reduction for 2010
Scab was extremely intense on crabapples and edible apples in the Midwest in 2009.