Artigo

Influência do sombreamento no crescimento de mudas de cumaru (Dipteryx odorata (Aubl.) Willd. - Fabaceae), cultivadas em viveiro

This paper presents results of an experiment carried out in the nursery at the Tropical Silviculture Experiment Station of Inpa, in Manaus, Amazonas, Brazil, with Dipteryx odorata (Aubl.) Willd. seedlings. The objective was to assess the growth of the species in the nursery under different levels of...

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Autor principal: Uchida, Toshihiro
Outros Autores: Campos, Moacir A A
Grau: Artigo
Idioma: pt_BR
Publicado em: Acta Amazonica 2020
Assuntos:
Amazon
Forest Species
Nursery
Amazônia
Espécies Florestais
Viveiro
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/13103
id oai:repositorio:1-13103
recordtype dspace
spelling oai:repositorio:1-13103 Influência do sombreamento no crescimento de mudas de cumaru (Dipteryx odorata (Aubl.) Willd. - Fabaceae), cultivadas em viveiro Influence of shade on the growth of cumaru (Dipteryx odorata (Aubl.) Willd. - Fabaceae) seedlings in the nursery Uchida, Toshihiro Campos, Moacir A A Amazon Forest Species Nursery Amazônia Espécies Florestais Viveiro This paper presents results of an experiment carried out in the nursery at the Tropical Silviculture Experiment Station of Inpa, in Manaus, Amazonas, Brazil, with Dipteryx odorata (Aubl.) Willd. seedlings. The objective was to assess the growth of the species in the nursery under different levels of shade. The experiment used fully randomised blocks with five treatments: two treatments with temporary shading which was removed later to provide full sun light (0%) and three treatments under shade (30%, 50% and 70%) using black polypropylene mesh. Stem diameter, height, root length, leaf, root, stem dry weights, shoot/root ratio and height/diameter ratio were assessed at three and five months after sowing. Height and root length were unaffected by shade levels at three and five months. Stem diameter was larger in full sun light, being statistically superior to the treatment with 70% shade, in both periods. Dry weight obtained under 70% shade was less than for other treatments at three months. At five months, there was a trend to increase dry weight as shade levels decreased. Smaller values of root/shoot ratio and height/diameter ratio were obtained in full sun. Dipteryx odorata, a species typical of the terra-firme (non-flooded) high forest, grows better under full sun light. Este trabalho apresenta os resultados de um experimento realizado com mudas de Dipteryx odorata (Aubl.) Willd. no viveiro da Estação Experimental de Silvicultura Tropical, do Inpa, em Manaus, Amazonas. O objetivo foi avaliar o desempenho da espécie cultivada em viveiro sob diferentes níveis de sombreamento. O experimento foi instalado em blocos ao acaso, com cinco tratamentosdois tratamentos com sombra temporária, passando a pleno sol e três tratamentos com sombreamento de 30%, 50% e 70%, obtidos com o uso de telas de poliolefinas, de cor preta. Aos 3 e 5 meses foram avaliados após a semeadura, diâmetro do colo, altura, comprimento das raízes, peso de matéria seca de raízes, caule e folhas e as relações altura/ diâmetro do colo e parte aérea/sistema radicular. Tanto aos 3 quanto aos 5 meses, o sombreamento não afetou o crescimento em altura e o comprimento das raízes. O diâmetro do colo foi maior sob 0% de sombreamento, sendo superior estatisticamente ao tratamento com 70% em ambos períodos. Com relação ao peso de matéria seca, o tratamento com 70% de sombreamento foi inferior aos demais na primeira medição. Na segunda medição verificou-se uma tendência de aumento do peso de matéria seca com a diminuição dos níveis de sombreamento. Os menores valores das relações altura/diâmetro do colo e parte aérea/sistema radicular foram obtidos a pleno sol. Dipteryx odorata, uma espécie típica das matas altas de terra-firme, cresce melhor a plena luz, quando cultivada em viveiro. 2020-04-24T15:14:26Z 2020-04-24T15:14:26Z 2000 Artigo https://repositorio.inpa.gov.br/handle/1/13103 10.1590/1809-43922000301114 pt_BR Volume 30, Número 1, Pags. 107-107 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Acta Amazonica
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language pt_BR
topic Amazon
Forest Species
Nursery
Amazônia
Espécies Florestais
Viveiro
spellingShingle Amazon
Forest Species
Nursery
Amazônia
Espécies Florestais
Viveiro
Uchida, Toshihiro
Influência do sombreamento no crescimento de mudas de cumaru (Dipteryx odorata (Aubl.) Willd. - Fabaceae), cultivadas em viveiro
topic_facet Amazon
Forest Species
Nursery
Amazônia
Espécies Florestais
Viveiro
description This paper presents results of an experiment carried out in the nursery at the Tropical Silviculture Experiment Station of Inpa, in Manaus, Amazonas, Brazil, with Dipteryx odorata (Aubl.) Willd. seedlings. The objective was to assess the growth of the species in the nursery under different levels of shade. The experiment used fully randomised blocks with five treatments: two treatments with temporary shading which was removed later to provide full sun light (0%) and three treatments under shade (30%, 50% and 70%) using black polypropylene mesh. Stem diameter, height, root length, leaf, root, stem dry weights, shoot/root ratio and height/diameter ratio were assessed at three and five months after sowing. Height and root length were unaffected by shade levels at three and five months. Stem diameter was larger in full sun light, being statistically superior to the treatment with 70% shade, in both periods. Dry weight obtained under 70% shade was less than for other treatments at three months. At five months, there was a trend to increase dry weight as shade levels decreased. Smaller values of root/shoot ratio and height/diameter ratio were obtained in full sun. Dipteryx odorata, a species typical of the terra-firme (non-flooded) high forest, grows better under full sun light.
format Artigo
author Uchida, Toshihiro
author2 Campos, Moacir A A
author2Str Campos, Moacir A A
title Influência do sombreamento no crescimento de mudas de cumaru (Dipteryx odorata (Aubl.) Willd. - Fabaceae), cultivadas em viveiro
title_short Influência do sombreamento no crescimento de mudas de cumaru (Dipteryx odorata (Aubl.) Willd. - Fabaceae), cultivadas em viveiro
title_full Influência do sombreamento no crescimento de mudas de cumaru (Dipteryx odorata (Aubl.) Willd. - Fabaceae), cultivadas em viveiro
title_fullStr Influência do sombreamento no crescimento de mudas de cumaru (Dipteryx odorata (Aubl.) Willd. - Fabaceae), cultivadas em viveiro
title_full_unstemmed Influência do sombreamento no crescimento de mudas de cumaru (Dipteryx odorata (Aubl.) Willd. - Fabaceae), cultivadas em viveiro
title_sort influência do sombreamento no crescimento de mudas de cumaru (dipteryx odorata (aubl.) willd. - fabaceae), cultivadas em viveiro
publisher Acta Amazonica
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/13103
_version_ 1787145403880177664
score 11.755432

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