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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: Maintaining Your Yard in Summer

July 1, 2014

Summer marks the season when your lawn can look its best – if you know how to maintain it properly. Here are some tips from Iowa State University Extension and Outreach on how to keep your lawn looking sharp during the year’s hottest months, with help from ISU Extension horticulturists.

Periodical Cicadas: And Then They Were Gone

July 23, 2014

Sigh.  It's hard to believe but the periodical cicada emergence of 2014 that we waited 17 long years to see is over.  They came, they sang their song, they perpetuated the species (which is all that was expected on them, after all), and now they are gone.  Oh, there will be a few stragglers next summer to remind us of what was, but for the most part, those of us living in central Iowa will not see them here again until 2031.  Let the countdown begin!!

Control of Foliar Diseases on Tomatoes

July 25, 2014

Septoria leaf spot and early blight are common foliar diseases of tomatoes in home gardens.  Fungal diseases overwinter on plant debris in the soil.  Fungal spores are splashed onto plant foliage by raindrops or splashing water and invade the plant tissue when leaf surfaces are wet.  Rainy weather in spring and early summer favors development of foliar diseases on tomatoes. 

 

Treatment for Prevention of Emerald Ash Borer

August 8, 2014

A recent inquiry from an Extension and Outreach colleague about timing of preventive treatments for the emerald ash borer (EAB) was insightful. This note is written to help direct types of treatments to the seasons they are most appropriate.
 
Insecticide product labels state that there are two windows for preventive treatments when applied to the soil or externally to the trunk of the tree: Spring and Fall.  Iowa State University Extension and Outreach publication PM2084 currently includes both windows, in keeping with the product labels.  Trunk injections can be done in a wider window (May through September 1) when the tree has a full crown and there is good soil moisture.

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.

Donald Lewis

Dr. Donald Lewis photo
Collaborator
Professor
Area of Expertise: 
Entomology

Mark Gleason

Dr. Mark Gleason photo
Collaborator
Professor
Area of Expertise: 
Plant Pathology

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