Prospecting for Biocontrols

Dr. Kong • March 14, 2025

It is neither economically sustainable nor environmentally acceptable to make multiple fungicide applications to protect boxwood, a key nursery crop and iconic landscape plant, from boxwood blight. 

This webinar highlights some of the successes at Virginia Tech in the search for potent biological agents for blight control. Dr. Kong will describe the biocontrol development process: how and where candidate microorganisms were discovered, and how their antagonistic activities against the boxwood blight pathogen Calonectria pseudonaviculata were measured in the laboratory—followed by evaluation on whole plants in controlled environments and then in field trials in western North Carolina. Some biocontrol agents have not only shown blight control at similar levels to the fungicide standard but have also substantially promoted boxwood growth. 

Dr. Kong will also share the ongoing research with Burkholderia SSG, the top-performer in her lab’s trials. These studies provide an example of the exploration of the microbial world as a source of powerful tools to promote plant health and production. 

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By Dr. Jerry Weiland January 30, 2026
Learn how your nursery production practices can impact boxwood blight risk and your potential for outbreaks. Whether you’re currently dealing with this disease or working to prevent it, understanding key risk factors is essential for protecting your entire boxwood inventory. Join plant disease expert Jerry Weiland as he examines real-world case studies demonstrating how boxwood blight enters nurseries and spreads via common production activities. This webinar will cover critical factors that influence disease development and spread, including plant size and spacing, cultivar selection, environmental conditions (temperature and moisture), and fungicides. You’ll leave with practical management recommendations and actionable strategies for preventing and controlling boxwood blight in your operation.
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By Dr. Fulya Baysal-Gurel May 30, 2024
This educational session aims to equip nursery producers, gardeners, and plant health professionals with vital knowledge and strategies to combat the pervasive threat of Calonectria pseudonaviculata, the fungus responsible for the devastating boxwood blight. Boxwood blight, a serious concern for the horticulture industry, jeopardizes the health and viability of boxwood plants, significantly impacting the ornamental plant market. Addressing this issue, the webinar will delve into the critical control points in nursery production, emphasizing effective sanitation practices to prevent and manage the spread of this disease. Attendees of the webinar can expect to gain: An understanding of the lifecycle and spread of Calonectria pseudonaviculata. Insight into the latest research and developments in boxwood blight control. Practical guidance on implementing effective sanitation and preventive measures in nursery production. Strategies for identifying critical control points to mitigate the risk of boxwood blight in their operations. This webinar is essential for anyone involved in the cultivation, care, or management of boxwood 
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