Different substrates in the production of blueberry seedlings

The research aimed to evaluate the effect of the composition of different substrate on the production of blueberry seedlings. The seedlings used were highbush, 'Georgiagem' from in vitro multiplication. Seven different substrate were used: T1 - Plantmax (R) ( 100%); T2 - Plantmax (R) + perlita ( 1: 1); T3 - soil + composed industrial + perlita ( 1: 1: 1); T4 - soil + rice husks ( 1: 1); T5 - soil + composed industrial + vermiculite ( 1: 1: 1); T6 - acacia bark + soil ( 1: 1); T7 - pine needle mulch + soil ( 1: 2). The substrate pine needle mulch + soil, followed by the substrate Plantmax (R), acacia bark + soil and soil/rice husks + soil, which promoted greater dry mass of roots and shoots. The substrate Soil + composed industrial + perlita and soil + composed industrial + vermiculite, pH alkaline, showed lower production of dry matter and lower concentrations of Fe, Mn, Zn, N and P. Pine needle mulch + soil, soil + rice husks, acacia bark + soil and the substrate Plantmax (R) with or without perlita g were the most suitable r for the production of blueberry seedlings, cultivar 'Georgiagem'.