The ryegrass is one of the main grasses used in the southern Brazilian states for the purpose of forage production during the winter months. Its great importance is presented due to the species of natural occurrence in the field of southern Brazil have low dry matter production during the winter. In this context, the quality of ryegrass seeds presents great importance for the correct establishment of cultivated pastures. The objective of the present study was to evaluate the benefit of using a densimetric table in the processing of ryegrass seed lots. For this purpose, two lots of ryegrass seeds with different levels of initial quality were used; the treatments were composed of four densimetric table collection regions and the control. To evaluate the effect of the equipment, tests of germination, emergence, electrical conductivity, seedling length, root length, hectoliter weight and operational capacity were conducted. It was observed that the densimetric table gives benefit to the quality of the seed lots, however the initial quality of the lots is a decisive factor in the efficiency of the equipment.