Crescimento, nutrição e eficiência de uso de nutrientes em espécies vegetais de canga ferruginosa

Detalhes bibliográficos
Ano de defesa: 2016
Autor(a) principal: Carvalho, João Marcelo de
Orientador(a): Não Informado pela instituição
Banca de defesa: Não Informado pela instituição
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Federal de Lavras
Programa de Pós-Graduação em Ciência do Solo
UFLA
brasil
Departamento de Ciência do Solo
Programa de Pós-Graduação: Não Informado pela instituição
Departamento: Não Informado pela instituição
País: Não Informado pela instituição
Palavras-chave em Português:
Link de acesso: http://repositorio.ufla.br/jspui/handle/1/12293
Resumo: The rocky fields on the ferruginous outcrops - Canga, is a well known ecosystem for hosting a large number of plant species. Its preservation is a major challenge, since there is little information in the literature on the species of this particular environment. In this study, the growth was evaluated, the content and accumulation of nutrients and nutrient use efficiency in a native species (Mimosa acutistipula var ferrea) and a ruderal species (Solanum crinitum), both found in the areas of the yoke under effect of omission of nutrients. Two experiments were conducted in-house-vegetation using three different substrates (Oxisol, soil sarong and reject mining iron) with and without the omission of nutrients. Both experiments were conducted in factorial 9 x 3 x 4, comprising nine treatments three soils and four replications. The treatments were based on the missing element technique (which omits the application of macronutrients and micronutrients). The results showed growth in response of native and ruderal species canga ferruginous with the applied treatments (management of nutrients). The growth of Mimosa acutistipula var ferrea and Solanum crinitum depended more on the presence of the N, P and K, that the presence of the micronutrients. The biggest growth nutrient accumulation verified by Solanum crinitum may be favorable for the use of this species as a facilitator in the areas recovery, since its spread is controlled. The high conversion rate of the nutrients absorbed in biomass, seems to favor the growth of S. crinitum in degraded environments.