Germination of seeds and production of seedlings of lettuce cultivars at different substrates

Elisângela Aparecida da Silva, Vander Mendonça, Mauro da Silva Tosta, Alessandra Conceição de Oliveira, Luis Lessi dos Reis, Diógenes Martins Bardiviesso

Abstract


The aim of this paper was to evaluate the effects of the combinations of substrata on germination and development of seedlings of lettuce cultivars. The experiment was carried out in a nursery, in Mato Grosso do Sul State University. There were compared the following combinations of substrata: washed sand + earthworm humus (2:1); manure bovine + earthworm humus (2:1); Plantmax® + earthworm humus (2:1); washed sand + Plantmax® (2:1) and manure bovine + Plantmax® (2:1), and three lettuce cultivars: Crespa sem cabeça, Americana Júlia and Babá de Verão. The experimental design was entirely at random, in a 5x3 factorial outline, with four replications and 16 seeds per plot. There were considered for evaluation 10 central seedlings per plot. The characteristics evaluated were: germination percentage (%), index of germination speed (IVE) and dry mass of the whole seedling (g). For all the analyzed variables, the cultivars Babá de Verão and Crespa sem cabeça presented the best results. Manure + humus was the best substratum to obtain seedling with larger development (vigor), althout it did not increase IVE and germination percentage.


Keywords


Lactuca sativa L.; Earthworm humus; Seedlings production.



DOI: http://dx.doi.org/10.5433/1679-0359.2008v29n2p245

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