Limestone and topdress nitrogen application improves the quality of <i>Peltophorum dubium</i> (Sprengel) Taubert (Fabaceae – Caesalpinioideae) seedlings

The liming and mineral fertilization can improve the growth quality of forest species seedlings. effects application nitrogen fertilizer rates limestone on Peltophorum dubium (Sprengel) Taubert seedlings were investigated in this study. plants grown 1.4-L polyethylene bags filled with sandy soil under greenhouse conditions. Treatments arranged a randomized block design 4 × 2 factorial: four N (0, 100, 200 300 mg dm–3) or non-application limestone, replicates. plant height, stem diameter, height/diameter ratio number leaves measured at 30, 60, 90 120 days after emergence. At days, root volume, shoot dry matter, accumulation shoots, shoot/root matter ratio, Dickson index was also measured. results reported that have positive effect most traits seedlings, when are produced substrate consisting from Brazilian Cerrado, use dm–3 topdressing should be recommended to obtain high-quality