Use of slow-release fertilizer on the production of sweet potatoes plantlets in tray

Amarílis Beraldo Rós, Humberto Sampaio de Araújo, Nobuyoshi Narita

Abstract


The production of plantlets in containers generally requires the use of fertilizers. The aim of this study was to evaluate the production of sweet potato in styrofoam trays using slow-release fertilizer. The experiment was carried out, under a screen-protected nursery, in a factorial scheme 5x5, with five doses of slow-release fertilizer NPK 19-06-10 (0, 50, 100, 150 e 200 g per 25 kg de substrate) and five times of plantlets permanence in tray (14, 28, 42, 56 and 70 days after planting the cuttings). The number and dry matter of roots and leaves were evaluated. The number of roots was not influenced by fertilizer addition. In general, there is not damage to plantlets growth until the highest dose used. Therefore, the fertilizer addition increases the sweet potato plants growth and the dose of 200 g per 25 kg of substrate is responsible for the best results.


Keywords


Ipomoea batatas; Rooting; Herbaceous cuttings; Multiplication; Substrate.



DOI: http://dx.doi.org/10.5433/1679-0359.2013v34n6p2667

Semina: Ciênc. Agrár.
Londrina - PR
E-ISSN 1679-0359
DOI: 10.5433/1679-0359
E-mail: semina.agrarias@uel.br
Este obra está licenciado com uma Licença Creative Commons Atribuição-NãoComercial 4.0 Internacional