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Turfgrass Rust

August 8, 2014

Rust is a fungal disease caused by several species of Puccinia.  All turfgrass species are susceptible to rust.  However, it is most commonly seen on perennial ryegrass and Kentucky bluegrass. 

 

From a distance, rust infected turf has a yellow-brown color.  Close examination of rust-infected grass blades reveals numerous yellow-orange pustules.  Rust can be easily diagnosed by walking across the lawn.  As one walks across the lawn, bright orange spores of the rust fungus rub off onto one’s shoes. 

Emerald ash borer confirmed in Clinton County, IA

March 25, 2015

DES MOINES – Emerald Ash Borer (EAB) has been positively identified in the city of Clinton, making this the twentieth county in Iowa where this wood boring pest of ash trees has been found. EAB kills all ash tree species and is considered to be one of the most destructive tree pests ever seen in North America.

EAB or Native Borer? New Publication Shows the Difference

July 1, 2014

AMES, Iowa — The Emerald Ash Borer is an insect that, in a matter of time, will destroy all ash trees. Because the bug has begun making its way across Iowa, an Iowa State University Extension and Outreach entomologist, in collaboration with an Iowa Department of Agriculture and Land Stewardship entomologist, has written a new publication to help Iowans identify signs of the pest under the bark.

Periodical Cicada Flagging - The End is Near!

July 1, 2014

“All good things must come to an end” and that includes the cicada emergence of 2014.  Most of us will be sad to see them go, though many living in the midst of the emergence will be relieved that the cacophony of cicada singing will soon be over. 

Yard and Garden: Tackling Common Summer and Fall Tree Issues

August 7, 2014

Trees can become afflicted with problems that can change their appearance and overall health. Iowa State University Extension and Outreach horticulturists offer tips on fighting these issues. To have additional questions answered, contact the ISU Hortline at 515-294-3108 or hortline@iastate.edu.


My magnolia is infested with magnolia scale.  What are my control options?


Magnolia scale (Neolecanium cornuparvum) is the largest scale insect in Iowa. Adult magnolia scale females are pinkish orange to brown, elliptical and up to one-half inch in diameter. Females give birth to their young (known as nymphs or crawlers) in late summer.

Emerald Ash Borer Confirmed In Boone County

August 4, 2014

DES MOINES – Two adult Emerald Ash Borer (EAB) beetles have been collected from a trap in a residential tree in Boone and have been positively identified as EAB by a federal identifier. The trap was placed in the tree this summer after suspect galleries were found in an ash tree branch that fell during a storm.


A statewide quarantine restricting the movement of hardwood firewood, ash logs, wood chips and ash tree nursery stock out of Iowa into non-quarantined areas of other states was issued on Feb. 4, 2014 and remains in place.



 

Emerald Ash Borer Found in Johnson County

June 13, 2014

EAB, emerald ash borerDES MOINES – An adult Emerald Ash Borer submitted by an Iowa City resident to the Iowa EAB Team has been positively identified as the destructive beetle by a federal identifier. A follow-up examination of ash trees growing in the vicinity of where the beetle was collected has failed to confirm an infestation.

Japanese Beetles Emerge in Iowa

June 13, 2014

Japanese beetle is becoming a more common field crop pest in Iowa. Literature shows adults need about 1,030 growing degree days (base 50°F) to complete development. Japanese beetles will continue emergence until around 2,150 degree days. Based on accumulating degree day temperatures in 2014, Japanese beetle adults should be active in some areas of southeastern and southwestern Iowa this week (Fig. 1). Expect adults to emerge in central and northern Iowa in about 7-14 days if warm temperatures continue.

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