01633naa a2200241 a 450000100080000000500110000800800410001902400390006010000200009924500840011926000090020352009520021265000120116465000200117665000110119665000190120765000180122670000230124470000190126770000200128670000160130677300690132221278722020-12-08       2020    bl uuuu     u00u1 u    #d7 a10.1590/0034-737X2020670600092DOI1 aMONTEIRO, A. B.  aSubstrates for seedlings with sewage sludge and biochar.h[electronic resource]  c2020  aThe objective of this study was to evaluate substrates formulated with proportions of sewage sludge (SS)-solarizedand SS-biochar in the production of seedlings of two indicator crops: lettuce (Lactuca sativa L.) and black wattle(Acacia decurrens Willd). The study was composed of two experiments conducted in greenhouse, in randomized blockdesigns. The treatments consisted of five doses of SS-solarized and SS-biochar, combined with rice husk ash andvermiculite in different proportions (20:40:40, 30:35:35, 40:30:30, 50:25:25 and 60:20:20) and two commercial substrates(controls). Morphophysiological characteristics of the seedlings and the physico-hydric characteristics, pH and electricalconductivity of the substrates were evaluated. The pyrolysis process enhanced the characteristics of SS as a componentof substrates, where the substrate with 20% of SS-biochar, 40% of vermiculite and 40% of rice husk ash, presented thebetter performance.  aAcácia  aAdubo de Esgoto  aAlface  aLactuca Sativa  aLodo Residual1 aPEREIRA, I. dos S.1 aBAMBERG, A. L.1 aSTÖCKER, C. M.1 aTIMM, L. C.  tRevista Ceres, Viçosagv. 67, n. 6, p. 491-500, nov./dec. 2020.