Persistence of chlorpyrifos, diazinon and dimethoate sprayed in the greenhouse environment during hydroponic cultivation of Gerbera Stefanos P. Hatzilazarou, Emmanouel Charizopoulos, Euphemia Papadopoulou-Mourkidou and Athanasios S. EconomouAgron. Sustain. Dev., 25 2 (2005) 193-199DOI: https://doi.org/10.1051/agro:2005020