INITIAL DEVELOPMENT OF Acacia mearnsii ON SUBSTRATE CONTAINING BIOCHAR DERIVED FROM CHARCOAL FINES: DESENVOLVIMENTO INICIAL DE Acacia mearnsii EM SUBSTRATO CONTENDO BIOCARVÃO DERIVADO DE FINOS DE CARVÃO VEGETAL

• Autor(a) principal: Remião dos Santos, Marina
• Data de Publicação: 2023
• Outros Autores: Glaeser da Rocha, Igor, Morales de Oliveira, Juliano, Schlindwein, Gilson, Alberto Mendes Moraes, Carlos, Kappler, Genyr, Celia Espinosa Modolo, Regina
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Mix Sustentável (Online)
• Texto Completo: https://ojs.sites.ufsc.br/index.php/mixsustentavel/article/view/6162
• topic: Biomass; Pyrolysis; Growing media; Biomassa; Pirólise; Meio de cultivo; Biomasa; Pirólisis; Medio de cultivo

The objective of this research was to evaluate the cultivation performance using a substrate with addition of charcoal fines (CF). The methodology started with treatment of the CF in a mill to reduce the particle size to ≤ 2.5 mm mesh, to be later used to compose the treatments to be used in the substrate composition for Acacia mearnsii De Wild seedlings. The substrate used in the study for mixing was a commercial substrate based on peat, vermiculite, and limestone. For this, different ratios of substrate: CF mixture (100:0%, 95:5%, 75:25%, 50:50% and 25:75% (v:v)) were used. The analyzed parameters were density, pH, electrical conductivity, total content of soluble salts, water retention at 10, 50 and 100 hPa, total porosity, aeration space, easily available water and buffering water. The development of the species was evaluated based on phytometry, the parameters assessed were the number of leaves, height of the shoot, root length, fresh mass, and dry mass of the plant. The results showed that the substrate with CF presents different physical and chemical characteristics when compared to the substrate without CF, acting in a positive way for the development of the seedlings when added in a ratio of 95:5% (v:v).