TY - JOUR AU - Morris, Leonard L. AU - Kader, Adel A. AU - Klaustermeyer, James A. AU - Cheyney, Charles C. TI - Avoiding ethylene concentrations in harvested lettuce JF - California Agriculture JO - Calif Agr Y1 - 1978/06/01 VL - 32 IS - 6 SP - 14 EP - 15 PB - University of California Agriculture and Nature Resources SN - 0008-0845 UR - http://www.ucanr.edu/sites/calagjournal/archive/?article=ca.v032n06p14 AB - At almost any stage of the handling process, lettuce may be exposed to ethylene gas, trace amounts of which can cause russet spotting.