Análise de parâmetros microbiológicos e bioquímicos do solo em sucessão de culturas sob diferentes doses de calcário dolomítico em superfície

Detalhes bibliográficos
Ano de defesa: 2023
Autor(a) principal: Betti, Cristiane Severgnini
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 Mato Grosso
Brasil
Instituto de Ciências Agrárias e Ambientais (ICAA) – Sinop
UFMT CUS - Sinop
Programa de Pós-Graduação em Agronomia
Programa de Pós-Graduação: Não Informado pela instituição
Departamento: Não Informado pela instituição
País: Não Informado pela instituição
Palavras-chave em Português:
pH
Link de acesso: http://ri.ufmt.br/handle/1/6272
Resumo: Soil correction with limestone allows for an increase in pH, supply of calcium and magnesium, increased availability of nutrients, reduction of aluminum toxicity, providing better growth conditions for plants and greater productivity. In agricultural systems with crop succession and no-tillage, therefore without soil disturbance, limestone is applied on the surface, initially correcting the surface layer of the soil, creating a correction front due to channels of dead roots in the soil, presence of organic matter, and precipitation. In systems with surface liming, it has been reported in the literature that high doses do not reach the base saturation calculated by the Base Saturation Method. There are responses in productivity for application and doses higher than those commonly used. In the soil system, biochemical parameters influenced by soil management have been studied as a sensitive way of predicting the long-term impacts of currently adopted agricultural practices. Microbial biomass carbon, an indicator of the amount of microbial biomass present in the soil, has been shown to be suitable for predicting the state of soil regeneration and its ability to provide nutrients and act as a regulator of soil processes. Basal respiration of the soil, expressing the activity of the microbial biomass, can quickly demonstrate stresses in the system. Soil enzymes such as β-glucosidase with its activity are highly correlated with other bioindicators and are easy to determine analytically, helping in decision making.In this way, the present work analyzes some of these parameters in soils submitted to different doses of Dolomitic limestone with the objective of evaluating the impact of this practice on the functioning of the soil microbial community.