The presente work done in order to study the behavior of a group of cultivars of bush snap beans and the influence of population density on yield. The cultivars used were: 'Contender', 'Tendercrop', 'Gallatin 50', 'Early Gallatin', 'Harvester' and 'Eagle'. The best cultivars were: 'Contender', 'Early Gallatin' and 'Tendercrop'. It was remarkable the earliness of 'Contender'. As the density increased the number of pods per plant decreased progressively, but the yield of pods increased. The highest yields were observed at 28 plants/m².