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vol.22 issue3EFEITO DO TRATAMENTO DE SEMENTES DE CARDEIRO (SCLERONEMA MICRANTHUM DUCKE) COM FUNGICIDA E INSETICIDA NA GERMINAÇÃOESTUDO DA OCORRÊNCIA DE SCOLYTIDAE E PLATYPODIDAE EM MADEIRAS DA AMAZÔNIA author indexsubject indexarticles search
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Acta Amazonica

Print version ISSN 0044-5967On-line version ISSN 1809-4392

Abstract

VARELA, Vania Palmeira  and  SANTOS, Joaquim dos. INFLUÊNCIA DO SOMBREAMENTO NA PRODUÇÃO DE MUDAS DE ANGELIM PEDRA (DINIZIA EXCELSA DUCKE). Acta Amaz. [online]. 1992, vol.22, n.3, pp.407-411. ISSN 0044-5967.  https://doi.org/10.1590/1809-43921992223411.

This experiment was carnea out at Ducke reserve, Amazonas, Brazil in order to detect the influence of shading on the production of D. excelsa seedlings. The shading intensities (30%, 50% and 70%) were obtained by using black plastic screening. The evaluation of height, coll r diameter, shoot and rood dry weight of D. excelsa seedlings was performed after 30, 60 e 90 days in the nursery. The following results were obtained: a) with regard to period, seedlings with higher height were removed with 90 days; for the other paramenters abalyzed, no significant differences were found; b) seedlings with higher height were produced to 30% and 50% shading; collar diameter and seeding height decreased significantly with 70% shading, c) higher above ground dry weight biomass of seedlings were obtained when lower shading levels were used (30% and 50%).

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