Resumo

JIMENEZ ROMERO, Edwin et al. Germination and growth of Ochroma pyramidale (Cav. ex Lam.) Urb. in Ecuador. Scientia Agropecuaria [online]. 2017, vol.8, n.3, pp.243-250. ISSN 2077-9917.  http://dx.doi.org/10.17268/sci.agropecu.2017.03.07.

The germination and growth of berry seed (O. pyramidale) at nursery level has been evaluated; applying seven pre-germinative treatments: Immersion in HSO4 for 32 minutes, immersion in water at 80 °C for three minutes, soak in water at 100 °C for 15 minutes, soak in coconut water 12 hours, sanding the seeds, dry heat 96 °C for 5 minutes and the control. Sowed in seven substrates only black soil and combined with: rice paddy, clay plus sand, Humus UTEQ, zeolite, clay plus ash, humus nacaro (worm humus). A completely randomized design (DCA) was performed in a factorial arrangement 7 (substrates) x 7 (pre-germinative treatments) with three replicates and 10 observation units. At 28 days, the factor (substrate) that most influenced the percentage of germination was black soil + zeolite 7 g/kg with 17.75%. The pre-germinative treatment with the highest incidence was the treatment of its natural brightness; the treatment black soil + UTEQ humus 0.70 g/k x soaking in coconut water for 12 hours obtained the best level of seedling height. The neck thickness of higher stem was observed black soil + UTEQ humus 0.70 g/kg. The highest number of leaves (five) obtained the treatment black soil + immersion in HSO4

Palavras-chave : Sulphuric acid; substrate; UTEQ humus; humus nacaro y zeolite.

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