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versão impressa ISSN 0034-737X
SMARSI, Ronny Clayton et al. Nitrogen fertilization in the productionof lychee seedlings. Rev. Ceres (Impr.) [online]. 2011, vol.58, n.1, pp. 129-131. ISSN 0034-737X. http://dx.doi.org/10.1590/S0034-737X2011000100020.
Because the lack of information on nitrogen application in the production of lychee seedlings in the nursery stage, the present work was carried out in a nursery in the municipality of Urânia-SP (20°11' 25.4'' S and 50° 37' 42.9'' W). The experiment was arranged in a randomized block design with five treatments (five rates of nitrogen in form of urea - 45% N): 0, 800, 1600, 2400 and 3200 mg.dm-3 of substrate, with four replications and ten plants for replication. One hundred and four days days after planting, the length of aerial part and roots, number of leaves and content of chlorophyll were evaluated. There was significant effect of N rates only for length of aerial part and chlorophyll content. Nitrogen fertilization of lychee seedlings at the concentration of 2188.33 mg.dm-³ of N in the substrate provided the greatest length of the aerial part. Chlorophyll content in the leaves increased linearly with nitrogen rates.
Palavras-chave : Litchi chinensis Sonn; propagation; fertilization; seedlings; nitrogen.