COVID-19 Advisory. OSU Extension is here for you. We are limiting our onsite and in-person activities while continuing remote and virtual programming.

Luisa Santamaria

Nursery Pathology Specialist
Bilingual Educator

Contact Luisa Santamaria


Please answer this simple math question. We use it to help prevent SPAM entries from bots. Thank you!

7 + 2 =
Solve this simple math problem and enter the result. E.g. for 1+3, enter 4.


Luisa Santamaria studied biology in her native Ecuador. Her interest in agricultural microbiology motivated her to pursue a graduate degree in the US. Luisa has conducted research in diverse areas, studying populations of nitrogen-fixing, free-living microorganisms, tissue culture in ornamentals, somaclonal variation and resistance screening for root-knot nematodes in Solanaceae, Phytophthora phaseoli epidemiology on lima beans, and screening of lima bean germplasm for resistance to races of P. phaseoli. She joined OSU in 2009, where she has created a new, bilingual, plant health program for the nursery and Christmas tree industry of Oregon and develops bilingual, educational material for her audiences. Her current research is on soil-borne pathogens (Phytophthora, Pythium, & Verticillium spp) in ornamental nursery crops. In the last three years, Luisa has expanded her interest to the isolation and characterization of cyanobacteria from agricultural waters and soils. She offers research experience to high school and community college students interested in any of these areas. Links of interest: Healthy Plants & Bilingual Education website Extension Publications – EESC _ OSU Extension catalog: Azalea Lace Bug - English fact sheet Azalea Lace Bug - Spanish fact sheet Azalea Lace bug - Bilingual poster English-Spanish Boxwood blight in commercial nursery production - English fact sheet Boxwood blight in commercial nursery production - Spanish fact sheet & Mobile-friendly pdf Boxwood blight in commercial nursery production - Bilingual poster Identifying and Managing Christmas Tree Diseases, Pests, and other problems - Field book _ Bilingual publication English-Spanish Best Management Practices for Christmas Tree Export - Bilingual publication English-Spanish Deciding when to treat for 12-spot beetles in snap beans_ Bilingual fact sheet Social Media: Facebook | YouTube  

Content by Luisa Santamaria

OSU Train the Trainers workshops keep agricultural workers on track with food safety

It’s vital to train workers correctly because the agricultural workforce plays an important role in the prevention of food contamination.

Luisa Santamaria | Apr 2021 | Impact story

Luisa Santamaria helps Hispanic nursery workers

Luisa Santamaria is an Oregon State University Extension plant pathologist at North Willamette Research and Extension Center. Her Extension and outreach program is bilingual education for nurseries and greenhouse workers. Read the full...

Luisa Santamaria | Mar 2015 | Video

Buenas Practicas en el Campo Para Trabajadores Agrícolas/Good Field Practices for Food Safety

La agricultura es un sector muy importante de la economía de Oregon. La seguridad de los alimentos sigue siendo una preocupación crítica y relevante, especialmente con la implementación de la Ley de Modernización de la ...

Luisa Santamaria, Maria Marlin | Jun 2020 | OSU Extension Catalog

Manejo de mildiu polvoriento (cenicilla) en lúpulo: Las mejores prácticas de cultivo

El mildiu polvoriento (cenicilla) es una de las enfermedades más importantes del lúpulo. El manejo exitoso requiere un conjunto integrado de prácticas, desde prácticas de cultivo, biológicas y químicas hasta la plantación de ...

Luisa Santamaria | Nov 2019 | OSU Extension Catalog

Report ID:
Report ID: