News

Rapid Ohia Death and Treatment in Hawaii

Rapid Ohia Death and Treatment in Hawaii

With Ōhiʻa making up almost 80% of Hawaii’s native forests, this fungal disease may take down a broad range of the Hawaiian forests.

What is it?

Ōhiʻa lehua , is an endemic, pioneering tree species. Ōhiʻa can be found at elevations from sea level to greater than 9,000 ft. A new disease of Ōhiʻa was discovered in 2013. Rapid Ōhiʻa Death is a disease caused by two fungal pathogens.

Both of these fungal pathogens can kill Ōhiʻa.

Potential Treatment

Until recently, the only effective treatment available for protecting high-value oaks is high volume treatments of the systemic fungicide propiconazole diluted in high volume of water and injected into the lower stem or root flare of trees . The intent is to saturate the xylem tissue of the root collar with fungicide to prevent movement of the pathogen into the above ground area of the trees. lukuohia fungal infection spread within the Ōhiʻa host.

Field Testing

Jennifer Juzwik – Research Plant Pathologist with the USDA Forest Service, and Dr. Lisa Keith – Research Plant Pathologist with the USDA Agriculture Research Service.

Results

All trunk-injected Ōhiʻa trees were asymptomatic 2 month after trial initiation, indicating no natural or inoculation success.   The two untreated trees that were inoculated did appear to show some Ōhiʻa wilt symptoms, but infection was not confirmed at that time. By 16 months post inoculation only one tree with fungi inoculation alone , five trees with Syngenta Experimental injection combined with fungi and three with Alamo with fungi had expressed some Ōhiʻa wilt symptoms .

Full article here

Most Popular

Golf Course Trades is produced by Golf Trades LLC and is a golf course superintendent niche digital marketing specialist. Golf Course Trades utilizes the 30 years of b2b relationships to help companies target golf courses utilizing our website, newsletter, and online turf directory. Please contact Golf Course Trades at adrep@thetrades.com or call (931) 484-8819 to request a full media kit.

Sign up below for our eNewsletter and to receive the same great Golf Course Trades content in your email box.


By submitting this form, you are consenting to receive marketing emails from: The Golf Course Trades, 18 Our Way Drive, Crossville, TN, 38555, www.golfcoursetrades.com . You can revoke your consent to receive emails at any time by using the SafeUnsubscribe® link, found at the bottom of every email. Emails are serviced by Constant Contact

Copyright © 2016-2022 The Golf Course Trades

To Top

Never Miss A Headline

Get our Weekly recap with the latest news, articles, and resources.