Shading and slow release fertiliser affect early growth in seedlings of Pau-marfim

Abstract

The aim of this study was to evaluate the initial growth of Agonandra brasiliensis Miers ex Benth. & Hook. F. in response to different levels of shading and doses of controlled-release fertiliser (CRF). The experiment was conducted at Embrapa Roraima in Boa Vista, in a completely randomised experimental design and a 2 x 5 factorial scheme, of two luminosity levels (50 and 30%) and five doses of CRF (formulation 18-05-09, NPK) (0, 0.5, 1, 2 and 3 g L-1 substrate), with five replications, each consisting of five plants. At 240 days after transplanting, the growth characteristics were evaluated, and the influence of the light levels and the CRF dose was recorded on these characteristics, either individually or interactively. It is suggested that plants of Agonandra brasiliensis be fertilised with a dose of 2 g L-1 CRF and grown in an environment with 50% of luminosity to maximize growth and efficiency in the production of high-quality seedlings.

Morphological correlation and quality of Agonandra brasiliensis seedlings in substrates and controlled release fertilizer

“…& Hook. F., belonging to the Opiliaceae family, popularly known as "pau marfim" (ivory wood), "cerveja de pobre" and "quina de veado", has a wide geographical distribution in the state of Roraima (Smiderle et al, 2021b). However, there is little research involving Agonandra brasiliensis, mainly in relation to seedling production (Souza et al, 2020a), nursery management and forest restoration of dry land, cerrado and savanna ecosystems in the state of Roraima (Tonini & Lopes, 2006, p. 25).…”