Soil fertility, growth and mineral nutrition in Eucalyptus grandis plantation fertilized with different kinds of sewage sludge

摘要: The agricultural use of sewage sludge has increased worldwide, especially in crops and countries with temperate or subtropical climate. Nevertheless, few studies have been conducted forest plantations tropical conditions. This study aimed to evaluate the soil fertility, mineral nutrition tree growth Eucalyptus grandis fertilized three types sludge. design used was blocks randomized plots, four replications five treatments: control without fertilization (C), conventional fertilizer (MF), 15 t ha−1 (dry basis) produced wastewater treatment plants Barueri (BS), Sao Miguel (SS) Parque Novo Mundo (PS) cities, all located metropolitan region Paulo, Brazil. It observed that application content organic matter, nitrogen phosphorus layer 0–5 cm depth, as well nitrogen, phosphorus, copper zinc concentrations leaves. In PS treatment, (conditioned quicklime) also pH concentration calcium compared other kinds polyelectrolyte), resulting higher Ca:Mg Ca:K ratios Probably for this reason, wood production 20 % lower than MF at 60 months age trees. Even so, provided a rise 50–90 % timber volume C treatment.