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  • School of Integrative Plant Science
  • Plant Pathology and Plant-Microbe Biology Section
  • Agriculture
Zachariah Hansen, assistant professor, School of Integrative Plant Science, Plant Pathology and Plant-Microbe Biology Section

Academic focus: Vegetable pathology

Research summary: My applied vegetable pathology research program is aimed at improving disease management for important vegetable crops in New York state. Topics include fungicide resistance screening and improving fungicide use efficiency, host resistance and cultural control evaluations, improved molecular disease diagnostics, and pathogen population genetics. Research is guided by stakeholder needs with attention given to endemic and emerging diseases. Research findings are shared with stakeholders through an active extension and outreach program.

What do you like to do when you’re not working?

My family keeps me quite busy outside of work. When I’m not tied up with those activities I enjoy playing guitar, snowboarding, cycling and spending time at the lake. I also live in a 19th-century farmhouse that is a constant labor of love. I take every available opportunity to spend time outside when the sun is shining! This is one of the reasons I chose a career in applied plant pathology.

What brought you to Cornell CALS?

I earned my Ph.D. in plant pathology at Cornell, so I have a deep appreciation for this institution. Ithaca is a unique and beautiful place to live, and Cornell’s world-class people and resources make it a very desirable place to build an agricultural research program. When the opportunity presented itself, it was an easy decision to pursue it.

What is an interesting fact about your field of study that you think everyone should know?

Agricultural pathogens are constantly responding to disease management strategies through evolution. One example of this is fungicide resistance, which is like antibiotic resistance in human medicine. The more we use a fungicide, the more we encourage pathogens to evolve resistance to it. By monitoring pathogen populations, we can mitigate this threat by recommending disease management strategies that discourage this natural evolutionary process.

Why did you feel inspired to pursue a career in this field? 

I have always had a love and appreciation for plants and the outdoors. During my master’s program, I was first exposed to applied plant pathology research and extension as a possible career path. I saw my mentor study pathogens in the lab, conduct experiments in the field and interact with growers through extension activities. Applied plant pathology allows me to explore my curiosity about the natural world while helping to solve real agricultural problems. And I still get to spend time outside working with plants.

What advice do you have for students interested in your field of study? 

Get involved with an applied plant pathology research program. Many programs like mine offer summer internships to help with field trials or opportunities during the academic year to help with lab activities. Just email professors directly or reach out to your department chair. Hands-on experience will help you determine if this is a good path for you, and the experience will improve your resume for the next opportunity.

What are your current or future outreach/extension projects?

My goal in extension is to make sure growers have access to the best evidence-based disease management recommendations we can offer, and to provide timely updates as new information becomes available. An example of this is the use of a fungicide decision-support system to help growers decide when to apply fungicides based on environmental data rather than a calendar program. One of my early extension goals is to establish this resource for New York potato and tomato growers to help them use fungicides as efficiently as possible.

Learn more about Zachariah from his CALS profile.

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