Cornell: Publications of the Controlled Environment Agriculture (CEA) Program of the College of Agriculture and Life Sciences. These include extensive on-line handbooks on hydroponic lettuce, spinach and Pak-choi production. http://www.cals.cornell.edu/dept/flori/cea/programs.html
North Florida Research and Extension Center-Suwannee Valley: Publications and Links http://nfrec-sv.ifas.ufl.edu/hydroponics.htm Keys to successful tomato and cucumber production in perlite media http://nfrec-sv.ifas.ufl.edu/keys_to_success.htm The development and demonstration of an outdoor hydroponic specialty crop production system for North Florida 99-12. http://nfrec-sv.ifas.ufl.edu/outdoor_hydro_report.htm
Ohio State University: Decision Support for Growing /High Quality, High Yield Hydroponic Tomatoes- An Interactive Graphical Primer. Describes pH, EC, temperature and other parameters for tomato production at different growing stages. Also has links to tomato disease and disorder diagnostic sites. http://www2.oardc.ohio-state.edu/hydroponics
Rutgers: Horticultural Engineering Newsletters, see the article on hydroponic greenhouses located here. http://aesop.rutgers.edu/~horteng
University of Arizona: http://ag.arizona.edu/PLS/faculty/MERLE.html and http://ag.arizona.edu/hydroponictomatoes/
Commercial
Floriculture Information Leaflets: http://www.ces.ncsu.edu/depts/hort/floriculture/cfr/
# 553 Managing Micronutrients in the greenhouse
#560 Submission Procedures for Root, Substrate, Water, Fertilizer Solution
and Plant Tissue Samples
#558 Alkalinity Control for Irrigation Water Used in Nurseries and Greenhouses
Fonteno, W.C., P.V.Nelson, and D.A. Bailey. 1996. Testing Procedures for Bedding Plants. P. 1-11. NC Flower Growers Bulletin April 1996 Vol 41#2. Available at the NC Commercial Flower Growers' Association Homepage
Horticultural Substrates Laboratory. Descriptions of services offered by the HSL and also numerous downloadable articles on substrate properties and nutrition. Good pictorial description of how to use the pour-through method for substrate analysis. http://www2.ncsu.edu/unity/lockers/project/hortsublab/index.html
North Carolina Commercial Flower Growers Bulletin http://www.NCCFGA.org has many topics of interest including prevention of pollution from greenhouses and potential future regulation in NC. See the April 1998 issue (Vol 43#2) on The Neuse Starts Here (p. 1-5) and Greenhouse BMP's: Not Just for Breakfast Anymore (p. 7-10). Testing Procedures for Bedding Plants. P. 1-11. NC Flower Growers Bulletin April 1996 Vol 41#2. Properties of Greenhouse Substrates. N.C. Flower Growers Bulletin. August 1995. Vol 40#4 p. 3-8.
North Florida Research and Education Center-Suwannee Valley Nutrient solution formulation for hydroponic tomatoes in Florida. http://nfrec-sv.ifas.ufl.edu/nutrient_solution.htm
University of Maryland water and nutrient management http://www.agnr.umd.edu/users/nutrient/nursery/home.html