Two levels (8 and 12 kg per sq.m.) of processed garbage were compared with one level (8 kg per sq.m.) of stable manure in presence and in absence of chemical fertilizers. In absence af chemical fertilizers there was no significant difference in yield between lettuce plots receiving 8 kg of manure and 12 kg af processed garbage per square meter; both treatments were significantly better than processed garbage at the rate of 8 kg per square meter. When chemical fertilizers were added, this difference was smaller, but still significant. The results or the experiment indicate that garbage processed by the Verdier-Grué method can replace stable manure in the fertilization of lettuce when used in amounts 1.5 times larger.