EFFECT OF DEEP OF SOWING AND LIGHT-INTENS ITY ON GERMINATION OF MANGABA (HANCORNIA-SPECIOSA GOM) SEEDS

Citation
Cel. Dafonseca et al., EFFECT OF DEEP OF SOWING AND LIGHT-INTENS ITY ON GERMINATION OF MANGABA (HANCORNIA-SPECIOSA GOM) SEEDS, Pesquisa agropecuaria brasileira, 29(4), 1994, pp. 661-666
Citations number
NO
Categorie Soggetti
Agriculture,"Agriculture Dairy & AnumalScience
ISSN journal
0100204X
Volume
29
Issue
4
Year of publication
1994
Pages
661 - 666
Database
ISI
SICI code
0100-204X(1994)29:4<661:EODOSA>2.0.ZU;2-M
Abstract
Effects of five deeps of sowing and two light intensities on germinati on of mangaba seeds have been studied. Seeding was done in plastic pot s of 14 cm of diameter by 11 cm of height, filled with washed sand, at 0, 1, 2, 3 e 4 cm of deep and light intensities were 100% of natural light, in an open field nursery, and 50% of natural light, in an woven nylon covered lath house. Light conditions affected seed germination and mean germination rate per week. Germination averaged 32.4% and 8.4 %, and speed of germination were 7.02% and 1.97% seeds germinated per week at 100% of light and 50% of light, respectively. Deeps affected t he mean number of weeks to germinate and the best result was obtained at 0 cm of deep with 4,06 weeks. Germination started at the third week , increased rapidly up to the fifth week, and became stable at the six th week after sowing. Mangaba seeds should be planted superficially at 100% of light intensity, to get the best results on final germination and speed of germination.