Keywords

  • controlled environment agriculture research
  • crop management or crop science
  • cut flower research
  • cut flowers research and extension
  • floriculture
  • fruit and vegetable production
  • horticultural production in high tunnels
  • horticultural sciences
  • horticulture
  • international agriculture
  • investigating physiological disorders of vegetables
  • physiology of horticultural crops
  • plant sciences
  • teaching vegetable and flower physiology
  • vegetables

Wien, Hans Christian

Professor
As professor and former chair of the Department of Horticulture, I am active in research and extension activities on production and handling of locally-grown cut flowers, as well as physiological disorders of vegetables and teach two 400-level courses.

research

research and scholarship focus

My major research focus is on production and physiology of cut flowers and herbaceous perennials, with a minor emphasis on physiological disorders of vegetables, such as the effects of flooding on vegetable crops. Recently, we have investigated the temperature conditions in high tunnels (unheated plastic-covered greenhouses) and studied practical ways to moderate those temperatures.

research areas

domestic geographic focus

affiliations

faculty appointment in

member of graduate field

other Cornell affiliations

teaching

teaching focus

I teach a 400-level course on Physiology of Vegetables and Flowers (Hort 462), and coordinate the teaching of a mineral nutrition course (Hort 455) to senior undergraduates and graduates. I occasionally lecture in several other courses on photography, vegetable production, intercropping in the tropics, and season extension.

service

outreach focus

High tunnel production of horticultural crops, especially cut flowers is a current interest, and the production of cut flowers in the Northeast. Growth and function of vegetable crops under New York conditions, especially as stressful conditions such as abnormally high temperatures occur, also require some attention. Extending knowledge about use of high tunnels for season extension and productivity of horticultural crops is becoming an important focus.

current professional activities

  • American Society of Horticultural Science
  • Vice-president, International Division, 1995-1996
  • Associate Editor, Journal of ASHS 1998-2001
  • International Society of Horticultural Science
  • American Society of Agronomy
  • Sigma Xi
  • Serves as a resource person on physiological disorders of vegetable crops to extension agents in New York and neighboring areas

background

educational background

  • B.S. 1963 Ontario Agricultural College, Guelph, Ontario(horticulture)
  • M.S. 1967 Department of Vegetable Crops, Cornell
  • Ph.D. 1971 Department of Vegetable Crops, Cornell

professional background

  • Working Group Co-Chair, World Conference on Horticultural Research,1996-1998
  • Program Leader, Cornell International Institute for Food, Agriculture and Development (CIIFAD) Program on Smallholder Horticulture in Zimbabwe, 1991 - 2001
  • Cornell Coordinator of collaborative project on vegetable crops with Sokoine University of Agriculture, Morogoro, Tanzania (Ford Foundation-sponsored), 1990 - July, 1993
  • Member, CIIFAD committee on sustainable agriculture, 1990 - present
  • Member, External Review Panel of Asian Vegetable Research and Development Center, April-May, 1990
  • Principal Investigator, US-Israel Binational Agr. Research and Development Fund project investigating pepper flower abscission, 1990-1993
  • Member, College of Agriculture Africa Committee, and head Vegetable Crops subcommittee, 1986-1991
  • Professor, Department of Horticulture, Cornell; teaching and research in vegetable physiology, international agriculture, 2002 (July) - present 
  • Chair, Department of Horticulture, Cornell; teaching and research in vegetable physiology, international agriculture, 2000 (July) - 2002 
  • Chair, Department of Fruit and Vegetable Science, Cornell; teaching and research in vegetable physiology, international agriculture, 1996 - 2000 
  • Professor, Department of Fruit and Vegetable Science, Cornell; research and teaching in vegetable physiology, international agriculture, 1992 - 1996
  • Associate Professor, Department of Vegetable Crops, Cornell; research and teaching in vegetable physiology, 1984 - 1992
  • Associate Professor, Department of Vegetable Crops, Cornell; extension, research and teaching in vegetable crops, 1979 - 1984
  • Plant Physiologist, International Institute of Tropical Agriculture; cowpea, soybean physiology, 1972 - 1979
  • Research Associate, Department of Vegetable Crops, Cornell , 1971 - 1972
  • Research Assistant, University of the Philippines - Cornell Graduate education Program, Los Banos, Philippines, 1968 - 1970
  • Research assistant, Department of Vegetable Crops, Cornell, 1964 - 1968
Keywords: controlled environment agriculture research, crop management or crop science, cut flower research, cut flowers research and extension, floriculture, fruit and vegetable production, horticultural production in high tunnels, horticultural sciences, horticulture, international agriculture, investigating physiological disorders of vegetables, physiology of horticultural crops, plant sciences, teaching vegetable and flower physiology, vegetables