Diferentes substratos e recipientes na produção de mudas de onze horas (Portulaca grandiflora)

Abstract

The portulaca (Portulaca grandiflora), belonging to the family of Portulacaceae, which originates in South America, being present from southeastern Brazil to Argentina and Uruguay. The portulaca plant is in 13th place out of a total of 46 plant species, showing that the plant is well accepted for garden decoration. There is little information on the ideal type of substrate and container volume for eleven hour seedlings, so we aim to evaluate the production of portulaca seedlings in different substrates and containers. The experiment was conducted in a greenhouse, four types of substrates (Mecplant®, Carolina Padrão® , Soil, Soil + rice husk (3: 1)) and three sizes of containers (8 x 12cm; 10 x 18cm and 15x25cm). The evaluated variables were aerial and root length, shoot dry matter and root, shoot green matter and root. It can be concluded that the commercial substrate Mecplant® presented better results, being able to offer nutrients for the good development of the seedlings. The 15 x 25 cm container provided higher values in the evaluated variables, due to the greater area for water and nutrient storage.