02138nab a2200301 i 4500 BR-BrBNA 20260424183224.0 260424b2019 bl.qr|pooa||| 00| 0 eng | BR-BrBNA eng F04 3140 Trazzi, Paulo André Santos, Juscelina Arcanjo dos Caldeira, Marcos Vinicius Winckler Roters, Diego Fernando Carvalho, Dulcineia Dobner Júnior, Mário Initial Growth of Pinus taeda by Fertilization Response at Planting Publicação on-line; 30 ref.; 5 tables; 1 illus.; Summary (En) ABSTRACT The objective of this study was to evaluate how the fertilizer composition, type and application method contribute to the initial growth of Pinus taeda applied at planting. Seedlings from an open‑pollinated seed orchard of Pinus taeda were planted on a Humic Dystrudepts soil containing 15 treatments of fertilizer application at planting. Basal diameter (immediately above ground – about 5 cm) and total height were measured on all live plants after six, 12 and 42 months. The basal diameter at six and 12 months ranged from 0.49 to 0.63 cm and 1.64 to 2.15 cm, respectively. The height at six and 12 months ranged from 0.49 to 0.64 m and 0.77 to 1.01 m, respectively, indicating that fertilizing improved this characteristics in ~30%. Fertilizer composition, type and application method contributed to the first year of growth of Pinus taeda. Nevertheless, fertilization response disappeared after 42 months. Keywords: loblolly pine, NPK, fertilizer, orthogonal contrast, forestry PINHEIRO BRAVO NPK FERTILIZANTE SILVICULTURA 2929 347954 Rio de Janeiro-RJ Instituto de Florestas - UFRRJ 1994 2025-0453 Floresta e Ambiente (Brazil) 1415-0980 / ISSN 2179-8087 0nline v. 26(special number n.1) p. 1-9; (2019) BR2026001283 https://www.scielo.br/j/floram/a/mVnCSZ4Zr3dDKPLrX5QvrKd/?format=pdf&lang=en ANA 341557 341557