UMass Amherst Launches Beech Leaf Disease Control Effort with Tree Spraying
On Friday, June 28, UMass Facilities Management will begin treating beech trees on campus for Beech Leaf Disease (BLD), a rapidly spreading complex associated with the foliar nematode Litylenchus crenatae. The disease causes damage to a tree’s leaves, leading to reduced vigor and can eventually lead to tree mortality. The disease has been particularly damaging in Southern New England where many trees are dying rapidly after infection.
During the coming weeks, infected American and European beech trees on campus will be treated with a foliar application of Broadform. Treated trees will be appropriately flagged and the campus community should avoid these flagged areas for the duration of the treatment, approximately 24 hours.
Below are some answers to common questions about BLD and the treatment plan scheduled for the campus trees. Any additional questions about BLD treatments on campus can be directed to Facilities and Campus Services Landscape Services at 413-545-6522.
What is Beech Leaf Disease?
Beech Leaf Disease (BLD) is a newly discovered lethal disease of beech trees caused by the nematode Litylenchus crenatae mccannii. The symptoms of the disease appear as a dark green, interveinal banding pattern on the lower canopy foliage, eventually spreading throughout the tree. The symptoms appear to progress through the buds and no new leaves are produced. This eventually results in the death of the tree.
How many of our trees are impacted?
There are approximately 70 American and European beech trees on campus. Beech Leaf Disease is a rapidly spreading complex, all campus beech trees are susceptible and at risk.
How has this been managed in the past?
This is a newly discovered disease that has only been recently found on campus. The disease has been particularly damaging in Southern New England where many trees are dying rapidly after infection.
What is the treatment plan for campus trees?
All campus beech trees will receive prophylactic treatments of Agri-Fos (phosphite fertilizer) to boost their natural immunity against infection by the nematodes. Infected beech trees on campus will be treated with a foliar application of Broadform (fluopyram).
What products are being used and why were they chosen?
Broadform and Agri-Fos have emerged from the results of many industry studies and trials as the most successful agents to control BLD.
Are there harmful impacts of these products to humans, animals, and the environment?
These products are registered with the EPA and regulated for safe use on ornamental plants.
How can I protect myself?
Treated trees will be appropriately flagged and the Campus Community should avoid flagged areas for the duration of the treatment (typically 24 hours).