Emergência de Alibertia edulis Rich. em diferentes substratos

Abstract

The marmelo do Cerrado (Alibertia edulis, Rubiaceae), is a native plant of Cerrado. However, there are few agronomic studies about agronomic of this specie. This work has as aim to evaluate the effect of different substrates on emergence and initial growth of Cerrado Alibertia edulis in trays. The experiment was carried out in a protected environment with 50% of shadow at the Medicinal Plant Garden of the Federal University of Grande Dourados (Dourados-MS). Treatments were established by eight substratums, which were: S1- 100% Bioplant® commercial substratum; S2- 50% Bioplant® + 50% soil; S3- 50% Bioplant® + 50% sand; S4- 50% Bioplant® + 50% broiler litter; S5- 50% Bioplant® + 25% soil + 25% sand; S6- 50% Bioplant® + 25% broiler litter + 25% soil; S7- 50% Bioplant® + 25% broiler litter + 25% sand. Experimental design was randomized blocks with four replications with 32 seeds. Emergence was evaluated proposition and number of leaves,stalk diameter, and characteristics regarding were measured. The highest percentage of emergence was 44.5% with substrate 100% Bioplant® and intermediary values of emergence was obtained with 50% Bioplant® + 50% soil and with 100% soil (23.7% and 24.9%, respectively). There are no significative differences for characteristics regarding to growth of the specie, except to stalk diameter. The substrate 1 (100% Bioplant®)order to obtain the highest percentage of emergence, and the substrates not effect in initial growth of marmelo do Cerrado in trays.