Productivity and quality of 'Fuji Suprema' apple fruit in different rootstocks and growing conditions.

Planting density increasing with the use of dwarf rootstocks it is a fact that has changed the scenario of the pome culture in Brazil. The objective of this work was to evaluate the plant growth, productivity and fruit quality of the Fuji Suprema cultivar grafted on the rootstocks G.213 and M.9 in a new area (virgin soil) and in the replanting area of apple trees in Vacaria City in Rio Grande do Sul state, Brazil. The cultivar Fuji Suprema grafted on the rootstocks G.213 and M.9 was used, being the experiment 1 in new area and the experiment 2 in area of replanting of apple trees. In both experiments, the orchard was implanted in 2014. The spacing adopted was 4.0 m between rows and 0.9 m between plants, totaling a density of 2,777 plants per hectare. Vegetative/productive evaluations were carried out in the 2014, 2015, 2016, 2017, 2018 and 2019 harvests in commercial orchards of the company Rasip Agro Pastoril S/A. In the experiment 1, the G.213 rootstock was highlighted for the variables accumulated productivity, accumulated productive efficiency, ASTT, number of branches and scion volume. In this same experiment, the M.9 rootstock was overestimated in some crops for the variables fruit mass and pulp firmness. In the experiment 2, the G.213 rootstock was highlighted as to the accumulated productivity, accumulated productive efficiency, ASTT, number of branches and scion volume. In the 2016 crop, the rootstock M.9, stood out for the diameter and mass of fruits and soluble solids and in the 2017 harvest for pulp firmness. In order to cultivate Fuji Suprema, both in the new area and in the replanting area of apple trees, the G.213 rootstock is a new dwarf rootstock option for the southern region of Brazil