“…Therefore, the objectives of this paper are to present and discuss the long-term effects of continued application of sewage sludge on the microbial biomass C and N, basal respiration, metabolic quotient, enzymatic activity, total carbon and nitrogen, soils δ 13 C, gas fluxes at the soilatmosphere interface, soil suppressiveness to the soilborne plant pathogens, pests and natural enemies, mites and collembolans populations, nitrate leaching, organic nitrogen mineralization rate, heavy metal contents in soil, plants and water, and soil chemical and physical characteristics under field conditions assay conducted in a tropical soil. Previous results were published by Fernandes et al [6,7], Ghini et al [8], Dynia et al [10], Pedrinho et al [11], Val-Moraes [12], Alves [13], Araújo and Bettiol [14], Bettiol [15], Melo [16], Melo [17], Boeira and Maximiliano [18,19], Silva et al [20], Rangel et al [21], Alcantara et al [22], Borba et al [23], Munhoz and Berton [24], Vieira et al [25], Boeira and Souza [26], Filizola et al [27], and Macedo et al [28][29][30].…”