Crescimento de mudas de Didymopanax morototoni em função de doses de fertilizante de liberação controlada

Matheus de Miranda Ribeiro Borges; Paulo Henrique Carvalho de Castro; Mario Davi Coutinho Santos; Daniel Pereira da Silva Filho; Marcos Andre Piedade Gama; Dênmora Gomes de Araújo

doi:10.53661/1806-9088202549263900

Authors

Matheus de Miranda Ribeiro Borges Universidade de São Paulo, Programa de Pós-Graduação em Fitotecnia, Piracicaba, São Paulo, Brasil. https://orcid.org/0000-0002-2158-6704
Paulo Henrique Carvalho de Castro Universidade de São Paulo, Programa de Pós-Graduação em Fitotecnia, Piracicaba, São Paulo, Brasil https://orcid.org/0000-0002-6967-2273
Mario Davi Coutinho Santos Universidade Federal Rural da Amazônia, Graduado em Agronomia, Belém, Pará, Brasil. https://orcid.org/0000-0002-5785-0693
Daniel Pereira da Silva Filho Universidade do Estado de Santa Catarina, Programa de Pós-Graduação em Engenharia Florestal, Lages, Santa Catarina, Brasil https://orcid.org/0009-0006-7961-1729
Marcos Andre Piedade Gama Universidade Federal Rural da Amazônia, Instituto de Ciências Agrárias, Belém, Pará, Brasil https://orcid.org/0000-0001-6320-1502
Dênmora Gomes de Araújo Universidade Federal Rural da Amazônia, Instituto de Ciências Agrárias, Belém, Pará, Brasil https://orcid.org/0000-0001-9907-1105

DOI:

https://doi.org/10.53661/1806-9088202549263900

Keywords:

Morototó, Osmocote, Reforestation

Abstract

The species Didymopanax morototoni, commonly known as morototó, presents great potential for the timber industry and the recovery of degraded areas, but the absence of adequate technical standards for seedling production limits its success in the field. The use of controlled-release fertilizers (CRF) is an alternative to conventional fertilizers, as it reduces costs and losses. The authors of this study aimed to evaluate the effect of different doses of Osmocote® fertilizer on the growth characteristics and seedling quality of D. morototoni. The experiment was conducted in a nursery, using a randomized block design, testing five doses of Osmocote® (0, 2, 4, 6, and 8 g dm^-3), with an NPK 18-5-9 formulation and a release period of five months. After 150 days, height, collar diameter, number of leaves, root length, leaf area, chlorophyll content, dry mass, and Dickson Quality Index were evaluated. The data were subjected to ANOVA and regression analysis (α = 0.05), and the dose of maximum technical efficiency (DMTE) was calculated using the derivative of the fitted equations. The results showed that the controlled-release fertilizer significantly influenced on the increase of all analyzed variables compared to the control. The most effective dose was 3 2 g dm^-3of Osmocote® 5M 18-5-9 mini prill, which provided the highest DQI for the production of D. morototoni seedlings.

Keywords: Morototó; Osmocote; Reforestation