The adult female ambrosia beetle and ambrosial fungi in the gallery

Granulate Ambrosia Beetles

Dr. Jason Oliver at the TSU Otis Floyd Nursery Research Center in McMinnville alerted us that they had caught a single granulate ambrosia beetle adult and two black stem borers in their ethyl alcohol baited trap when it was checked on Wednesday, March 18. As spring approaches, so too do the emergence of these pests as temperatures at or above 70 degrees F are conducive for ambrosia beetle activity. They primarily attack trees that are stressed and dormant, which many plants, especially if they were not irrigated last August through October could have been damaged by the flash drought. Often, these plants will not show signs of stress because of their dormancy. The granulate ambrosia beetle is an invasive pest from…

A comparison of the front and backside of a leaf that is infected by grapevine rust

Be on the Lookout for Grapevine Leaf Rust in Tennessee

Dr. Zach Hansen published an article in the November 2018 National Plant Diagnostic Network newsletter. Grapevine leaf rust was observed for the first time in Tennessee in September 2018. The disease was found on grape seedlings at large box stores in several counties in middle and east Tennessee. Dr. Hansen suggests that growers, industry professionals, diagnosticians and extension personnel should be aware of the disease and should be on the lookout for it. For the full article, click here.

The Cookeville Rose Society and Cumberland County Master Gardeners prepare for their tour to see how the resistance trials are going

Drs. Alan and Mark Windham Lead Rose Tour at the Plateau Research and Education Center

The Cookeville Rose Society and Cumberland County Master Gardeners took a twilight tour with Drs. Alan and Mark Windham through the rose rosette resistant trials at the Plateau Research and Education Center near Crossville, TN. While in the plots, they learned about how to recognize rose rosette, rose rosette management strategies, and research results concerning disease resistance. After the tour, everyone ate homemade ice cream while learning more about growing roses and how to control rose diseases and insect pests.

Dr. Frank Hale teaching a crowd about various ornamental insects and diseases

Dr. Hale and Dr. A. Windham Invited Speakers for UTIA Turf and Ornamental Field Day

Frank Hale and Alan Windham attended UT Turf and Ornamental Field Day on Thursday at the Plant Science farm on Alcoa. They averaged 50 persons for each of four presentations, which covered new and noteworthy insect pests and diseases such as emerald ash borer, boxwood blight, rose rosette and others. Over 500 turf and grounds maintenance professionals attended the field day.