Substratos alternativos para produção de mudas de Ruellia simplex por estaquia

Abstract

To produce quality seedlings using the vegetative propagation method, in addition to determining the ideal conditions for plant development, it is necessary to choose a substrate that has a good relationship between water storage and aeration. In this context, the objective was to evaluate the effect of different proportions of carbonized rice husk (CAC) and babassu decomposed stem (CDB) on the composition of substrates for Ruellia simplex vegetative propagation. The experiment was conducted at the Center for Agricultural and Environmental Sciences (CCAA) at the Federal University of Maranhao (UFMA). A completely randomized design with seven treatments was used, of which T1 - 100% Solo; T2 - 20% CAC + 80% Solo; T3 - 60% CAC + 40% Solo; T4 - 100% CAC; T5 - 20% CDB + 80% Solo; T6 - 60% CDB + 40% Solo; T7 - 100% CDB, with each experimental unit repeated 3 times and composed of three plants. There was no significant effect on the number of shoots and leaves, root length, root volume, fresh mass of the aerial part and root system. However, for the average length of aerial part, dry mass of aerial part and root system, a significant difference between the proportions of the substrates. We recommend the substrate containing 20% ​​babassu decomposed stem plus 80% soil and 20% carbonized rice husk plus 80% soil for vegetative propagation of Ruellia simplex.