Uso de lodo de esgoto na produção e na qualidade de mudas e teores de nutrientes em Hovenia dulcis (Rhamnaceae)

The objective of this study was to evaluate the effect of different substrates containing sewage sludge on the quality and content of macro and micronutrients of Hovenia dulcis Thunberg. The treatments were composed of different substrate compositions containing sludge and sewage, and biometric characteristics were measured and macro and micronutrient contents were determined. It was observed that the increasing order of the total macronutrient content evaluated in the root was K > N > Mg > Ca > P > S and at the aerial part> Ca > N > K > P > Mg > S; for the micronutrients, at the root content was Fe > Zn > Mn > B > Cu and in the aerial part Fe > Mn > Zn > B > Cu. The use of sewage sludge as substrate provided better nutritional quality seedlings with better growth and increase of aerial and root biomass.