Temperatura de secagem sobre a concentração de nutrientes em Eucalyptus dunnii Maiden

This study aimed to compare the standard temperature drying of samples of plant tissue to 70°C to 105oC and analyze the effect of temperature on four components of trees (bark, twigs, wood and leaves) and its influence on the results of nutritional analysis in plant tissue of Eucalyptus dunnii. We collected 8 samples per tree component, 4 samples for treatment 1 (drying at 70°C) and 4 samples for treatment 2 (105°C.), totaling 32 samples. It was found that only the nutrients present in the wood component, did not suffer interference from the drying temperature. For this component can be made to 105oC and stabilize the weight of the samples in approximately 32 hours. For the component leaf Ca concentrations differed between the two treatments, being higher in the second treatment. For the component branch, the concentration of N, P and K differed between the two treatments, being higher in the first. But in both treatments to weight stabilization occurred after 32 hours, with no time savings dried at 105oC. For the shell component, the Mg content differed between the two treatments, being higher in the second treatment.