Evaluation of nuclears as a forest restoration technique in Mariana, Minas Gerais State, Brazil

• Autor(a) principal: Martins, Sebastião Venâncio
• Data de Publicação: 2022
• Outros Autores: Braz, Josmaíle de Paula, Villa, Pedro Manuel, Alves, William Victor Lisboa, Valente, Mirian Lago, Kruschewsky, Gabriel Corrêa, Dias, Andréia Aparecida, Nabeta, Fabio Haruki
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Pesquisa Florestal Brasileira (Online)
• Texto Completo: https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/2154
• topic: Mining tailings; Seedling growth; Seedling survival; Crescimento de mudas; Rejeito de mineração; Sobrevivência de mudas

The study aimed to test the efficiency of a new alternative technology, named nuclear, on the survival and growth of tree species seedlings aiming at the forest restoration in areas affected by the tailings of the Fundão dam, in Mariana, Minas Gerais State, Brazil. Two native tree species (Piptadenia gonoacantha (Mart.) J.F. Macbr. and Inga edulis Mart.) were evaluated during 12 months, under a randomized block design and three treatments: hydrogel (T1), nuclear (T2) and control (T3). The effect of treatments and time after planting on seedling survival and growth was analyzed by differences between means and mixed linear models. Significant differences were observed in the two growth in height and in diameter at ground level (DGL) between treatments. The relative growth rates for height and DGL of the two species remained relatively constant with no differences between treatments. We observed that I. edulis presented higher survival under nuclears compared to the other treatments. The results indicate that the use of nuclears alone was not sufficient to guarantee the growth and survival of seedlings, and we recomend its evaluation for other tree native species.