Mauritia vinifera Mart Substrates and Nitrogen Doses in Acacia mangium Willd Growth

Wéverson L. Fonseca, Augusto M. de Oliveira, Tiago de O. Sousa, Alan M. Zuffo, Fernandes A. de Almeida, Rosane L. Fonseca, Hingrid R. S. Teixeira, Adaniel S. dos Santos, Jean K. da S. Paz, Jorge G. Aguilera, Leandris Argentel-Martínez and Ofelda Peñuelas-Rubio

Journal of Agricultural Science, 2024, vol. 14, issue 6, 96

Abstract: The objective of this study was to evaluate the effect of the combination of a substrate formulated with decomposed buriti stem (Mauritia vinifera Mart.) and nitrogen doses in the production of Acácia mangium Willd seedlings. A completely randomized design was used in a 3 × 5 factorial scheme, being the factors constituted of substrates formulated from decomposed buriti stem (DBS) mixed with dystrophic yellow oxisol in three proportions (0; 25 and 50%) and nitrogen doses (0; 100; 200; 300 and 400 mg dm-3) applied in cover. After 60 days from the emergency, it was made the following evaluations- Plant Height (PH), stem diameter (SD), internodes number (IN), dry mass of the shoot part (DMA), length and dry mass of the roots, robustness quotient through stem height/diameter relation, roots/dry mass relation and Dickson Quality Index (DQI). The multivariate analysis of variance showed a significant difference (p < 0.01) among averages vectors of treatments. The grouping analysis for the evaluated treatments allowed the division into four distinct groups. In the bi-dimensional plane formed by the first two canonical variables (Can.1 and Can.2) that withheld 99,47% of the total variance contained in the nine original variables, it is observed that the group II of treatments, composed of substrates formulated with 50% of soil + 50% of DBS supplemented with the doses of 200, 300 and 400 mg dm-3 of nitrogen, has provided a greater initial growth of A. mangium plants, as stated by the highest averages in all evaluated variables.

Date: 2024
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