Atividade respiratória da microbiota e conteúdo de glicose em resposta à adição de fósforo em solo de Cerrado

摘要: Metabolic activity of microorganisms is one the main processes control on nutrient transformation in soil. However, soil microbiota affected by various factors such as available nutrients, including phosphorus. The present work had objective to show an approach effect phosphorus addition (50 500 mg kg-1 P dry soil) respiratory response and amount extra intracellular glucose typic acrustox Cerrado.The following analyses were carried: C-CO2 evolved; total organic carbon e; During incubation for 31 days, (daily activity) increased 6,30 23,59 with addition, when compared control. ratio between daily evolved (C-CO2) added decreased, showing a reduction efficiency utilization. extracellular was very smaller than glucose. At end days incubation, decreased due consumption sugar under experimental conditions. Negative metabolic correlation (r= -0.97, p<0.01) respiration shown. only treatment 500 mg P kg-1of soil, being other treatments similar strong relation increasing microorganism decreasing occurred, suggesting that can be associated content.