This research focused on the effect of organic production systems on initial quality and postharvest performances of lamb's lettuce leaves stored in air or under modified atmosphere at refrigerated temperature. Different strategies of organic soil fertility management were compared under the same environmental conditions: i) a simplified organic production system based on organic commercial fertilizers to recover crop uptake (SB); ii) an organic production system based on organic matter amendment mainly supplied by animal manure (AM), and iii) an organic production system based on organic matter amendment supplied by green waste compost (AC). Fully developed lamb's lettuce leaves were harvested and then packed into perforated bags (control in AIR) or in modified atmosphere packaging (MAP) and stored at 4°C.