Professor Dr. Heiner Lieth Crop Ecologist specializing in greenhouse, nursery and in-door production, soilless culture, and applications of photovoltaic energy production in agriculture Mailing address: Plant Sciences Department Mailstop 2; One Shields Ave, University of California, Davis, CA 95616, USA To communicate, send email message to jhlieth@ucdavis.edu

---

Description of research activities:

My research, teaching, and extension work focuses on plant production in protected cultivation (greenhouse, nursery).

• My research focuses on the relationship between environmental variables and soilless crop production. This research includes a variety of projects ranging from basic to applied research.  Basic research projects focus on the quantification (through the use of mathematical models) of plant and crop processes.  My applied research deals with production optimization, soilless (hydroponic) production of horticultural crops, greenhouse automation, and the development of production-management tools, particularly ones based on mathematical models.
• I work extensively with horticultural crops including ornamentals (rose, lily, chrysanthemum, orchids, etc) and vegetable and fruit crops (strawberry, tomato, pepper, leafy-greens etc).
  
• I use technologies (photovoltaics, LED lighting, nutrient sensing, etc) within the above areas. I am especially interested in the dual use of agricultural lands for both energy and crop production.
  

Teaching:

I teach a course in greenhouse and nursery management (ENH 125) and a course about flowers called "Flower Power" (PLS 006)

Expertise:

• Management and optimization of the greenhouse environment; greenhouse computer control; sensor technology
• Horticulture: Management of light, temperature, irrigation and other factors of the greenhouse environment; root zone management; irrigation and fertigation.
• Specific Crops: Most ornamental greenhouse and nursery crops, but especially Roses, Gerbera, Chrysanthemum, and Easter Lily. Non ornamental crops: strawberry,

---