Nitrogen sources and doses on growth and quality of seedlings of cassia grandisand peltophorum dubium

Detalhes bibliográficos
Autor(a) principal: Soares, Cássia Barreto
Data de Publicação: 2017
Outros Autores: Freitas, Eliane Cristina Sampaio de, Paiva, Haroldo Nogueira de, Neves, Júlio César Lima
Tipo de documento: Artigo
Idioma: eng
Título da fonte: LOCUS Repositório Institucional da UFV
Texto Completo: http://dx.doi.org/10.1590/1806-90882017000200014
http://www.locus.ufv.br/handle/123456789/19975
Resumo: The demand for seedlings of Brazilian native tree species has increased due to the growing number of recovery projects for degraded areas. In order to obtain success in the revegetation, high quality seedlings should be used. Among the factors that affect the quality of seedlings there is nitrogen fertilization, since nitrogen (N) is one of the nutrients required in the largest amount by plants. Thus, this study aimed to evaluate the response of Cassia grandis and Peltophorum dubium seedlings to N sources and doses. The treatments were represented by a factorial of three sources (ammonium nitrate, calcium nitrate and ammonium sulfate) by five N doses (0, 50, 100, 150 and 200 mg dm-3), arranged in randomized complete block design, with four replicates. After 145 days of sowing, were obtained: height (H), collar diameter (CD), shoot dry matter (SDM), root dry matter (RDM), total dry matter (TDM), and calculated the dry matter mass ratio of shoot and root (SDM/RDM) and the Dickson Quality Index (DQI). Nitrogen fertilization resulted in growth gains and improved the seedlings quality of both species. However, the sources and the source × doses interaction were not significant for all variables. For the studied substrate (Red-Yellow Latosol) the recommended dose is 185 mg dm-3 of N for the production of Peltophorum dubium seedlings. For the production of Cassia grandis seedlings was not able to find the optimum dose of N.
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spelling Nitrogen sources and doses on growth and quality of seedlings of cassia grandisand peltophorum dubiumPlants nutritionSeedling productionNitrogen fertilizationThe demand for seedlings of Brazilian native tree species has increased due to the growing number of recovery projects for degraded areas. In order to obtain success in the revegetation, high quality seedlings should be used. Among the factors that affect the quality of seedlings there is nitrogen fertilization, since nitrogen (N) is one of the nutrients required in the largest amount by plants. Thus, this study aimed to evaluate the response of Cassia grandis and Peltophorum dubium seedlings to N sources and doses. The treatments were represented by a factorial of three sources (ammonium nitrate, calcium nitrate and ammonium sulfate) by five N doses (0, 50, 100, 150 and 200 mg dm-3), arranged in randomized complete block design, with four replicates. After 145 days of sowing, were obtained: height (H), collar diameter (CD), shoot dry matter (SDM), root dry matter (RDM), total dry matter (TDM), and calculated the dry matter mass ratio of shoot and root (SDM/RDM) and the Dickson Quality Index (DQI). Nitrogen fertilization resulted in growth gains and improved the seedlings quality of both species. However, the sources and the source × doses interaction were not significant for all variables. For the studied substrate (Red-Yellow Latosol) the recommended dose is 185 mg dm-3 of N for the production of Peltophorum dubium seedlings. For the production of Cassia grandis seedlings was not able to find the optimum dose of N.A demanda por mudas de espécies nativas tem aumentado devido ao crescente número de projetos de recuperação de áreas degradadas. Para o sucesso da revegetação, devem ser utilizadas mudas de qualidade, e entre os fatores que influenciam a qualidade, destaca-se a fertilização nitrogenada, uma vez que o nitrogênio (N) é um dos nutrientes requeridos em maior quantidade pelas plantas. O objetivo deste estudo foi avaliar a resposta das mudas de Cassia grandis L. f. e Peltophorum dubium (Spreng.) Taub. às fontes e doses de N. Os tratamentos foram representados por um fatorial de três fontes (nitrato de amônio, nitrato de cálcio e sulfato de amônio) e cinco doses de N (0, 50, 100, 150 e 200 mg dm-3), dispostos no delineamento em blocos casualizados, com quatro repetições. Após 145 dias da semeadura, foram obtidos: altura (H), diâmetro de coleto (DC), massa de matéria seca da parte aérea (MSPA), da raiz (MSR), e total (MST), e calculada a relação entre a massa de matéria seca da parte aérea e raiz (MSPA/MSR) e o índice de qualidade de Dickson (IQD). A fertilização nitrogenada resultou em ganhos no crescimento e qualidade das mudas de ambas as espécies estudadas. As fontes e a interação fontes × doses não foram significativas para todas as variáveis estudadas. Para as condições estudadas, recomenda-se a dose de 185 mg dm-3 de N para a produção de mudas de Peltophorum dubium. Para a produção de mudas de Cassia grandis não foi possível encontrar a dose ótima de N.Revista Árvore2018-06-06T14:57:57Z2018-06-06T14:57:57Z2017-02-08info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlepdfapplication/pdf1806-9088http://dx.doi.org/10.1590/1806-90882017000200014http://www.locus.ufv.br/handle/123456789/19975engv. 41, n. 2, Feb. 2017Soares, Cássia BarretoFreitas, Eliane Cristina Sampaio dePaiva, Haroldo Nogueira deNeves, Júlio César Limainfo:eu-repo/semantics/openAccessreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFV2024-07-12T08:23:14Zoai:locus.ufv.br:123456789/19975Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452024-07-12T08:23:14LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false
dc.title.none.fl_str_mv Nitrogen sources and doses on growth and quality of seedlings of cassia grandisand peltophorum dubium
title Nitrogen sources and doses on growth and quality of seedlings of cassia grandisand peltophorum dubium
spellingShingle Nitrogen sources and doses on growth and quality of seedlings of cassia grandisand peltophorum dubium
Soares, Cássia Barreto
Plants nutrition
Seedling production
Nitrogen fertilization
title_short Nitrogen sources and doses on growth and quality of seedlings of cassia grandisand peltophorum dubium
title_full Nitrogen sources and doses on growth and quality of seedlings of cassia grandisand peltophorum dubium
title_fullStr Nitrogen sources and doses on growth and quality of seedlings of cassia grandisand peltophorum dubium
title_full_unstemmed Nitrogen sources and doses on growth and quality of seedlings of cassia grandisand peltophorum dubium
title_sort Nitrogen sources and doses on growth and quality of seedlings of cassia grandisand peltophorum dubium
author Soares, Cássia Barreto
author_facet Soares, Cássia Barreto
Freitas, Eliane Cristina Sampaio de
Paiva, Haroldo Nogueira de
Neves, Júlio César Lima
author_role author
author2 Freitas, Eliane Cristina Sampaio de
Paiva, Haroldo Nogueira de
Neves, Júlio César Lima
author2_role author
author
author
dc.contributor.author.fl_str_mv Soares, Cássia Barreto
Freitas, Eliane Cristina Sampaio de
Paiva, Haroldo Nogueira de
Neves, Júlio César Lima
dc.subject.por.fl_str_mv Plants nutrition
Seedling production
Nitrogen fertilization
topic Plants nutrition
Seedling production
Nitrogen fertilization
description The demand for seedlings of Brazilian native tree species has increased due to the growing number of recovery projects for degraded areas. In order to obtain success in the revegetation, high quality seedlings should be used. Among the factors that affect the quality of seedlings there is nitrogen fertilization, since nitrogen (N) is one of the nutrients required in the largest amount by plants. Thus, this study aimed to evaluate the response of Cassia grandis and Peltophorum dubium seedlings to N sources and doses. The treatments were represented by a factorial of three sources (ammonium nitrate, calcium nitrate and ammonium sulfate) by five N doses (0, 50, 100, 150 and 200 mg dm-3), arranged in randomized complete block design, with four replicates. After 145 days of sowing, were obtained: height (H), collar diameter (CD), shoot dry matter (SDM), root dry matter (RDM), total dry matter (TDM), and calculated the dry matter mass ratio of shoot and root (SDM/RDM) and the Dickson Quality Index (DQI). Nitrogen fertilization resulted in growth gains and improved the seedlings quality of both species. However, the sources and the source × doses interaction were not significant for all variables. For the studied substrate (Red-Yellow Latosol) the recommended dose is 185 mg dm-3 of N for the production of Peltophorum dubium seedlings. For the production of Cassia grandis seedlings was not able to find the optimum dose of N.
publishDate 2017
dc.date.none.fl_str_mv 2017-02-08
2018-06-06T14:57:57Z
2018-06-06T14:57:57Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv 1806-9088
http://dx.doi.org/10.1590/1806-90882017000200014
http://www.locus.ufv.br/handle/123456789/19975
identifier_str_mv 1806-9088
url http://dx.doi.org/10.1590/1806-90882017000200014
http://www.locus.ufv.br/handle/123456789/19975
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv v. 41, n. 2, Feb. 2017
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv pdf
application/pdf
dc.publisher.none.fl_str_mv Revista Árvore
publisher.none.fl_str_mv Revista Árvore
dc.source.none.fl_str_mv reponame:LOCUS Repositório Institucional da UFV
instname:Universidade Federal de Viçosa (UFV)
instacron:UFV
instname_str Universidade Federal de Viçosa (UFV)
instacron_str UFV
institution UFV
reponame_str LOCUS Repositório Institucional da UFV
collection LOCUS Repositório Institucional da UFV
repository.name.fl_str_mv LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)
repository.mail.fl_str_mv fabiojreis@ufv.br
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