Abstract

DUARTE, Marciel Lelis; PAIVA, Haroldo Nogueira de; LOPES, Aldo Teixeira  and  FILHO, Sebastião Martins. Production of melaleuca seedlings in response to nitrogen fertilization. Rev. de Ciências Agrárias [online]. 2023, vol.46, n.1, pp.41-50.  Epub Feb 08, 2023. ISSN 0871-018X.  https://doi.org/10.19084/rca.26648.

This work aimed to evaluate the effect of sources and doses of nitrogen on the initial growth and quality of Melaleuca alternifolia Cheel (melaleuca) seedlings. The nitrogen sources were: ammonium nitrate, calcium nitrate and ammonium sulfate, established in five doses (0, 50, 100, 150 and 200 mg dm-3 of N) equally parceled out and applied on the 25th, 50th, 75th and 100 days after transplanting. The experiment was arranged in complete randomized blocks, in (3 x 5) factorial design, in red yellow latosol, with four repetitions. After 125 days of transplanting data regarding height, collar diameter, aerial part dry weight and root, and the ratios between height and collar diameter, height aerial part and dry weight, aerial part dry weight and root dry weight and Dickson quality index (IQD) were collected. There were no significant effects from the nitrogen sources, however the doses of N were positive and significant for all traits except for the ratio between height and collar diameter. The best standards of seedlings quality were obtained from the application of 100 mg.dm-3 of N.

Keywords : seedling production; plant nutrition; nursery and Melaleuca alternifolia.

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