This work aimed to evaluate the productivity of eucalypt rotations in different site indexes and spatial arrangements. The database came from continuous forest inventories executed during the first and second rotations of 718 clonal stands (AEC 144®, AEC 224® and AEC 1528®), implanted in the 8.4 m2 plant−1 spacing and distributed in two arrangements: 3.0 × 2.8 m (rectangularity = 1.07) and 6.0 × 1.4 m (rectangularity = 4.29). Height, basal area, and volume differed between rotations as site quality improved and stands aged. In absolute terms, stands with lower site index, and installed under a larger rectangular arrangement showed less volume divergence between rotations. At 84 months of age, the first rotation of sites with the highest productive capacity tended to show 42.63 and 38.67 m3 ha−1 year−1 in smaller and larger rectangularity arrangements, respectively. The volumetric declines between the first and second rotations averaged 6.8 and 41.3 % at 84-month reference point, for arrangements of 6.0 × 1.4 m and 3.0 × 2.8 m, respectively. It is concluded that the less rectangular spatial arrangement (3.0 × 2.8 m) proved to be more productive for conducting a single rotation (high forest). Arrangement 6.0 × 1.4 m showed higher productive potential in stands managed with two rotations within the same cultivation cycle.