Controlled-Release Fertiliser and Substrates on Seedling Growth and Quality in Agonandra brasiliensis in Roraima

Aline das Graças Souza,Oscar José Smiderle,Thiago Komuro Moriyama,Raiovane Araújo Montenegro,Thiago Jardelino Dias

doi:10.5296/jas.v8i3.16363

Abstract

The aim of this study was to verify the effect of different substrates, in the presence and absence of controlled-release fertiliser, on the growth and morphological quality of seedlings of Agonandra brasiliensis Miers ex Benth. & Hook.f., in the state of Roraima, Brazil. The experimental design was a 2 * 5 factorial scheme, with and without the addition of 1.0 g L-1 NPK 18-05-09 formulation controlled-release encapsulated fertiliser (Forth CoteR) and five substrates. The following were evaluated: shoot height (H), collar diameter (CD), increase in shoot length (IncH) and collar diameter (IncCD), shoot dry weight (SDW), root dry weight (RDW), total dry weight (TDW) and Dickson quality index (DQI). The use of NPK 18-05-09 formulation controlled-release fertiliser (Forth CoteR) in a medium-sand substrate is recommended for obtaining plants of Agonandra brasiliensis of greater robustness, balance of biomass distribution, and a high standard of quality. In the substrate composed of soil from the cerrado + carbonised rice husks - CRH + organic substrate (2:1:1), the addition of NPK 18-05-09 formulation Forth CoteR is not necessary to obtain Agonandra brasiliensis plants of good morphological quality. Substrate 3, composed of soil + CRH (3:1), with or without the addition of NPK 18-05-09 formulation Forth CoteR, is not recommended for producing plants of Agonandra brasiliensis, due to the slow development and reduced morphological quality of the plants.

Highlights

Opiliaceae Valeton is a small pantropical family with centres of diversity in Southeast Asia and Oceania
The use of NPK 18-05-09 formulation controlled-release fertiliser (Forth Cote®) in a medium-sand substrate is recommended for obtaining plants of Agonandra brasiliensis of greater robustness, balance of biomass distribution, and a high standard of quality
Height was 38.0 cm for the plants of Agonandra brasiliensis grown in substrate Sub 4 (Sand + carbonised rice husks (CRH) + OS (2:1:1)) in the presence of SRF (Forth Cote®), with an increase greater than twice the height of treatment Sub 1 without the addition of SRF (Forth Cote®) for the same environment, six months after transplanting (Figure 2)

Summary

Introduction

Opiliaceae Valeton is a small pantropical family with centres of diversity in Southeast Asia and Oceania. In Brazil, Opiliaceae is represented only by the genus Agonandra Miers ex Benth. Five species and one subspecies occur in Brazil across all the phytogeographical domains, except the Pampas (CNI, 2017). & Hook.f., has been registered in the state of Roraima (Souza and Lorenzi, 2012). It is considered one of the noble trees of the Roraima cerrado, as it provides good quality wood. It is regarded as an ornamental tree, and is planted in squares and parks

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