Resumo

MENDONCA, Vander et al. Doses of nitrogen and simple superphosphate on papaya 'Formosa' plant growth. Ciênc. agrotec. [online]. 2006, vol.30, n.6, pp. 1065-1070. ISSN 1413-7054.  http://dx.doi.org/10.1590/S1413-70542006000600003.

In order to evaluate responses of nitrogen and phosphorus fertilization on papaya 'Formosa' seedling growth one experiment was carried out in shady chamber light (50%) at Agronomy Department of Universidade Federal de Lavras (UFLA). A randomized block design was used in a 4x 4 factorial scheme, with four replications and five plants per plot. It was used 4 doses of nitrogen (0; 800; 1600 and 3200 mg N dm^-3 of substrate) and 4 doses of SS (0; 2.5; 5.0; and 10.0 kg m^-3 of substrate). It was evaluated the following characteristics: high plant (cm), root length (cm), number of leaves/plant, dry matter of aerial part and root (g/plant). Nitrogen covering fertilization warranted best quality of papaya seedling and higher dosages promoted negative effects. The simple super phosphate showed good of seedlings qualities when was used at 10 kg m^-3 in substrate.

Palavras-chave : Carica papaya; nitrogen and simple super phosphate fertilization.