Características físicas e químicas de substratos à base de pó de coco e resíduo de sisal para produ??o de mudas de sabiá (Mimosa caesalpiniaefolia Benth)

摘要

An experiment was carried out to analyze the physical and chemical characteristics of substrates with different concentrations of coir dust (PC), sisal residue (RS) and dystrophic red-yellow Argissoil (Arg) on the seedling development of 'sabiá' (Mimosa caesalpiniaefolia Benth) in 2 dm3 containers. A completely randomized experimental design was used, with 13 treatments, 4 replications and 8 pots per replication, totaling 416 sample units. Physical and chemical characteristics were evaluated, as well as total height and diameter every 30 days, leaf area, number of leaves and dry matter weight. Coir dust was recommended as substrate component for 'sabiá' seedling production due to its physical and chemical properties along with durability and structure. Sisal residue was not recommended as substrate component since it showed unsuitable conditions of electrical conductivity (EC) and pH for seedling production.