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Lori A Hoagland

Horticulture and Landscape Architecture 

  • Assistant Professor of Horticulture
Horticulture Room 314

Area of Expertise: Specialty Crop Production Systems


The goal of our program is to support the growth and sustainability of the specialty crop industry in Indiana and the Midwestern region by developing management strategies that lower input costs, improve plant health and productivity, and reduce negative impacts of production systems on the environment. Our lab is actively working to understand the role of soil microbial ecology in agroecosystem processes; develop efficient strategies for the use of locally available and renewable resources; and, identify alternative crops and crop cultivars adapted to low-input and organic production systems. We use a combination of traditional and molecular techniques in the lab, collaborate with scientists and extension educators from multiple disciplines, and conduct research on-farm using a participatory approach. We work with a variety of high value specialty crops and are currently conducting research in tomato, carrot, and hops production systems. Current research topics include:

  • Nutrient availability from biological amendments and cover crops
  • Biological approaches to soil-borne disease and weed suppression
  • Functional interactions between soil microbes and crop cultivars
  • Nutrient uptake and use efficiency


  • HORT 20100 – Plant Propagation
  • HORT 49000 - Urban Agriculture
  • HORT 59000 - Rhizosphere Ecology


  • Ph.D., Soil Science, Washington State University
  • M.S., Natural Resources, University of Nebraska-Lincoln
  • B.S., Natural Resources, University of Nebraska-Lincoln

Professional experience:

  • Assistant Professor, Purdue University, 2010-present
  • Post Doctoral Research Associate, Washington State University, 2007-2009
  • Graduate Research and Teaching Assistant, Washington State University, 2003-2007
  • Graduate Research and Teaching Assistant, University of Nebraska-Lincoln, 2000-2002
  • Product Development and Information Coordinator, NC+ Organics, 1997-2000

Awards & Honors

(2011) International Travel Grant Award. Agriculture Research Program, Purdue University.

(2011) Acorn Seed of Excellence Award. Purdue University.

(2011) Millionaire’s Club Award. Purdue University.

Selected Publications

Hoagland, L., Navazio, J., Cerruti, N., Kaplan, I., Maynard, L., & Gibson, K. (2014). Breeding regionally adapted fresh-market tomato varieties for organic production systems in the Midwestern U.S.. Organic Seed Alliance Biennial Meeting.

Simon, P., Navazio, J., Colley, M., Hoagland, L., Roberts, P., Colquhoun, J., DuToit, L., . . . Waters, T. (2014). CIOA: The Carrot Improvement for Organic Agriculture Project - Better Carrots for Organic Growers and U.S. Consumers. Organic Seed Alliance Biennial Meeting.

DuToit, L., Derie, M., Christianson, C., Hoagland, L., & Simon, P. (2014). First Report of Bacterial Blight of Carrot in Indiana Caused by Xanthomonas hortorum pv. carotae.. Plant Disease.

Borrelli, K., Koenig, R., Gallagher, R., Pittman, D., Snyder, A., Burke, I., & Hoagland, L. (2012). Alternative strategies for transitioning to organic production in direct-seeded grain systems in eastern Washington II: Soil fertility. Journal of Sustainable Agriculture, 36, 446-477.

Hoagland, L., Mazzola, M., Murphy, K., & Jones, S. (2012). Wheat varietal selection and annual vs. perennial growth habit impact soil microbial community and apple replant disease suppression. Organic Seed Alliance Conference, 13-15.

Hodges, L., Brandle, J., Helmers, G., & Francis, C. (2011). A decision support tool for optimizing integration of specialty crop enterprises in grain production systems. 5th World Congress of Conservation Agriculture, 45-47.

Borrelli, K., Koenig, R., Gallagher, R., Pittman, D., Snyder, A., Fuerst, P., & Burke, I. (2011). Alternative strategies for transitioning to organic production in direct-seeded grain systems in eastern Washington II: Soil Fertility. Journal of Sustainable Agriculture.

Turner, S., Benedict, C., Darby, H., Simonson, P., Sirrine, R., & Murphy, K. (2011). Challenges and opportunities of organic hop production in the U.S.. Agronomy Journal, 103, 1645-1654.

Murphy, K., Yan, L., Colley, M., & Jones, S. (2011). Genotype X environmental interaction for mineral nutrient concentration in organically grown spring wheat. Agronomy Journal, 103, 1734-1741.

TerAvest, D., Smith, J., Carpenter-Boggs, L., Granatstein, D., & Reganold, J. (2011). Soil carbon pools, N suppy, and tree performance under several ground cover systems and compost rates in a young apple orchard. HortScience, 46, 1687-1694.