The yield of onion cultivars was evaluated as a result of within row spacing and number of seedlings per cell tray. The experiment was performed in São José do Rio Pardo, São Paulo State, Brazil. The experimental design was of randomized blocks, and the treatments were arranged in a factorial scheme 2 x 2 x 3, with four replicates. The evaluated factors were two hybrids Princesa and Superex; two and three seedlings transplants per tray cell and three within hole spacing of 8, 12 and 14 cm. Bulb yield was influenced only by the cultivar factor, being 'Superex' (68,9 t ha-1) 33,1% superior than 'Princesa' (51,7 t ha-1). The cultivar Superex presented higher yield in relation to 'Princesa' and a greater bulb mass was obtained when adopting the hole spacing of 14 cm with two seedlings transplants per tray cell in the two cultivars.
Allium cepa; plants density; spatial distribution; transplant
