Click on one of the topics above to view specific articles in pdf format published in floriculture trade magazines. Articles posted with permission from Greenhouse Product News, Greenhouse Grower, Greenhouse Management, and GrowerTalks magazines. All articles are in pdf format.
Bulletins, books, and electronic resources
FlowersOnTime (version 1.3)
This Microsoft Excel spreadsheet allows users to predict the effect of modifying greenhouse temperature on crop production time. First, select one of the 70+ floriculture crops (many of which are bedding plants) in the drop-down list, then specify your typical finish crop time at a particular temperature. The model then predicts the effect of increasing or decreasing temperature at 2 °F intervals, assuming all other conditions are the same. Developed by Paul Fisher (Univ. of Florida), Erik Runkle and Matt Blanchard (Michigan St. Univ.) and John Erwin (Univ. of Minnesota).
Managing Photoperiod in the Greenhouse
This six-page bulletin provides information on how control the day length in commercial greenhouse production of floriculture and nursery crops. Developed by Chris Currey and Roberto "RoLo" Lopez (Purdue Univ.) and Erik Runkle (Michigan St. Univ.).
Wave® Smart Scheduling Tool
This Excel‐based tool, developed in collaboration with PanAmerican Seed, enables growers to predict time to first open flower for 15 Wave petunia varieties at specific average daily temperatures (ADTs) and daily light integrals (DLIs). This tool allows growers to schedule specific Wave varieties on precise dates and help select varieties that flower uniformly under their environmental conditions. Developed by Erik Runkle, Heather Greyerbiehl, Cathy Whitman, Tasneem Vaid, and Mike Olrich (Michigan St. Univ.) and Sonali Padhye (PanAmerican Seed).
Greenhouse Cost of Production Software
This FREE spreadsheet tool (in Microsoft Excel) enables growers to estimate greenhouse production costs and explore opportunities for savings. An 86-minute tutorial makes learning to use the spreadsheet simple and effective. Developed by Roger Betz, Tom Fernandez, Erik Runkle, Bridget Behe, Tom Dudek, and Jeanne Himmelein, Michigan St. Univ.
Growing Plants Indoors
This 20-page, full color bulletin presents information on how to care for common indoor plants. Topics presented include light, water, fertilizer, insects, mites, and diseases. Developed by by Erik Runkle, Daedre Craig, Jeanne Himmelein, Tiffany Enzenbacher, and Mary Hausbeck, Michigan St. Univ.
Lighting Up Profits
This 100-page book contains 15 chapter written by academic and industry experts on greenhouse lighting. Topics include the underlying biology of lighting, guidelines for photosynthetic and photoperiodic lighting, carbon dioxide enrichment, and lighting for specific kinds of crops such as plugs and liners, bedding plants, and greenhouse vegetable crops. The book's companion CD-ROM includes PowerPoint presentations and Acrobat PDF files for each chapter, plus an appendix containing light unit conversion tables. Edited by Paul Fisher (Univ. of Florida) and Erik Runkle (Michigan St. Univ.).
Daily Light Integral (DLI) Maps
These maps provide the average outdoor daily light integral throughout the continental United States and were developed by Jim Faust at Clemson Univ. To estimate the average DLI in your greenhouse, determine the percentage of light transmission that reaches your crops. For example, if you measure 6,300 footcandles outside the greenhouse and an average value of 4,100 footcandles inside, your light transmission value is about 65% (0.65). Multiply the DLI value on the maps by the light transmission value to get the estimated DLI inside your greenhouse.
Commercial Orchid Production
This website provides research-based information generated at Michigan St. Univ. about commercial orchid production. Although commercial orchid research at Michigan St. Univ. essentially stopped in 2010, much of the information generated is still relevant today.
Cold Storage of Plug Seedlings
This 20-page pdf document (3.4 mb) contains research-based information on storing seeding plugs. Written by Royal Heins, William Carlson, Nathan Lange, and Tom Wallace, Michigan St. Univ. Copyright Greenhouse Grower magazine and Michigan St. Univ., 1994.