Scientific Basis for EcoVeg. Issue 4 (1st October 2014) - Faber-Langendoen, Don; Keeler-Wolf, Todd; Meidinger, Del; Tart, Dave; Hoagland, Bruce; Josse, Carmen; Navarro, Gonzalo; Ponomarenko, Serguei; Saucier, Jean-Pierre; Weakley, Alan; Comer, Patrick