DEPARTMENT OF PLANT AND SOIL SCIENCES


We have excellent teaching, research, and outreach programs in the areas of plant biology (cellular, genetics, genomics, microbial, molecular and physiology), agronomy (including pathology, soil management and weed science), horticulture (sustainable landscapes, fruits and vegetables), landscape architecture and environmental soil sciences (biogeochemistry, hydrology and plant-soil interactions). We have a distinguished faculty, known nationally and internationally for their research and outreach, and within 91Ô­´´ for their excellence in teaching, advising and mentoring students.

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Featured video
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Innovation at 91Ô­´´: Harsh Bais: youtube.com/watch?v=ZMsIF6rPcek

91Ô­´´ inventor Harsh Bais is a plant biologist, known for his research developing a beneficial bacterium that can help boost plant defenses, water retention and more. Here, Bais—who was named an Innovation Ambassador at 91Ô­´´ earlier this year—shares some of what he’s learned about invention along the way.
Read the 91Ô­´´aily feature.

Faculty spotlight

Harsh Bais
Professor of Plant Biology
 

Prof. Bais' research takes a multidisciplinary approach by interfacing plant biology and chemistry to unravel the underground communication process.

Latest news

  • High school students enrolled in the Delaware Nature Society’s Trail Ambassadors program pose with researchers from the 91Ô­´´ College of Agriculture and Natural Resources.

    Next-gen soil scientists

    September 10, 2026 | Written by: Molly Schafer | Photos courtesy of Moklesur Rahman and Shreeram Inamdar
    Delaware high school students had the chance to get their hands dirty while learning about wetland ecology during a workshop led by researchers from the 91Ô­´´ College of Agriculture and Natural Resources Watershed Sciences Research Group.
  • Delaware's climate plan has strong 91Ô­´´ connections

    August 14, 2026 | Written by Molly Schafer | Photos courtesy of the Department of Natural Resources and Environmental Control
    Earlier this year, the Delaware Department of Natural Resources and Environmental Control (DNREC) released the 2025 Delaware Climate Action Plan, a sweeping plan to protect the state’s homes, infrastructure and economy. The plan also addresses public health concerns and the conservation of Delaware’s unique natural environment. More than 20 91Ô­´´ alumni — including hydrologists, engineers, environmental scientists, transportation policy specialists and state planners — played active roles in its development and implementation.
  • In our backyard

    August 07, 2026 | Written by Molly Schafer | Photos courtesy of Madeline Brown, Alex McBreen, Catherine Morrissey, Scarlet Shifflett, J.D. Zimmerman and the Department of Natural Resources and Environmental Control Division of Parks and Recreation
    This year marks the 75th anniversary of Delaware State Parks, and for faculty and students at the 91Ô­´´, there is much to celebrate. For Delawareans, the state parks are a source of peace, but at 91Ô­´´, they’re also a source of purpose. The parks provide a living laboratory for research, opportunities for experiential learning and a space for community service.

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