Skip to main content
Article thumbnail
Location of Repository

Volume do recipiente, adubação e sua forma de mistura ao substrato no crescimento inicial de Peltophorum dubium (sprengel) taubert em viveiro Container volume, fertilization and way to mix substrate on the initial growth of Peltophorum dubium (sprengel) taubert in nursery

By Elizeu Luiz Brachtvogel and Ubirajara Contro Malavasi

Abstract

O ensaio comparou três volumes de recipientes, três tipos de adubação e duas formas de mistura do fertilizante ao substrato, no crescimento inicial de plântulas de Peltophorum dubium (Sprengel) Taubert (canafístula) em viveiro, num esquema fatorial 3 x 3 x 2. Foram utilizados tubetes de 100 e 180 cm³ preenchidos com substrato comercial e sacos plásticos de 10 x 15 cm cheios com mistura de solo e vermiculita em partes iguais, fertilizados com fertilizante de liberação lenta (FLL) nas dosagens de 1,75 e 3,5 kg m-3 e com formulação NPK a 1,0 kg m-3 de substrato. As formas de misturas adotadas foram aquelas com base por metro cúbico de substrato ou individualmente para cada recipiente. Na análise destrutiva realizada 12 semanas após a emergência, avaliaram-se o número de folhas, a altura da planta, o diâmetro do coleto e as massas secas da parte aérea, o sistema radicular e o total. Os resultados indicaram que a redução no volume do recipiente causou diminuição na massa seca, diâmetro e altura. O número de folhas, a massa seca da parte aérea e a massa seca total foram semelhantes nas plântulas sob fertilização com NPK, independentemente do volume do recipiente, o que não ocorreu naquelas sob FLL, onde esse parâmetro diminuiu com o volume do recipiente. O cálculo do índice de Dickson após 12 semanas indicou valores superiores em mudas com a forma de mistura convencional em relação à individual e maior naquelas sob fertilização com NPK, em comparação com as sob FLL.<br>This essay compared three container volumes, conventional fertilizer, recommended and half recommended slow release fertilizer, and the way of mixing fertilizer in the substrate on the initial growth of Peltophorum dubium seedlings in a nursery. The statistical design was a randomized factorial 3 x 3 x 2, using 180 and 100 cm³ plugs for containers filled with commercial substrate and plastic bags of 10 x 15 cm filled with soil and vermiculita in equal parts. For fertilization, a slow release fertilizer (FLL) was tested in the dosages of 3.5 and 1.75 kg m-3, as well as NPK in 1.0 kg m-3 of substrate. The adopted mixture form was based on a cubical substrate volume or individually for each container. A destructive analysis was done 12 weeks after emergence, evaluating leaf number, plant height, stem diameter, aerial, radicular system and total dry matter. The results indicated that, during the nursery phase, the reduction of container volume caused a reduction in dry matter, diameter and height. The leaf number, aerial and total dry matter was similar in seedlings under fertilization with NPK independent of container volume, which did not occur in those under FLL, where this parameter decreased with container volume. The calculated Dickson Index indicated superior values in seedlings with the conventional mixture form in relation to the individual one, and the biggest one in those under fertilization with NPK compared to the ones under FLL

Topics: Volume de recipiente, Fertilizante de liberação lenta e Mudas florestais, Container volume, Slow release fertilizer and Forest seedlings, LCC:Forestry, LCC:SD1-669.5, LCC:Agriculture, LCC:S, DOAJ:Forestry, DOAJ:Agriculture and Food Sciences
Publisher: Sociedade de Investigações Florestais
Year: 2010
DOI identifier: 10.1590/S0100-67622010000200004
OAI identifier: oai:doaj.org/article:aca88630c43b48b2b67907d09eb725ac
Journal:
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • http://doaj.org/search?source=... (external link)
  • Suggested articles


    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.