Impact of nitrate and ammonium ratio on nutrition and growth of two epiphytic orchids
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/0001-3765201820171008 http://hdl.handle.net/11449/187259 |
Resumo: | Phalaenopsis and Dendrobium do not grow and flower well with 100% ammonium (NH4-N); and there are detailed studies on the effects of nitrate (NO3-N) and ammonium ratios on the flowering, but no information about accumulation of other nutrients and the effects of ammonium toxicity on orchids. For this reason, two experiments were carried out with orchids: Phalaenopsis ‘Golden Peoker’ and Dendrobium ‘Valentine’. Six months after acclimatization the plants were transplanted to individual plastic vessels and the treatments consisted of five ratios (%) of nitrate / ammonium (0/100, 25/75, 50/50, 75/25, 100/0). The sources of NO3-N and NH4-N were calcium nitrate and ammonium sulfate, respectively. After 12 months treatment, when the plants were beginning to issuance of flower stem, the accumulation of: N, P, K, Ca and Mg in the shoot and biometric variables were evaluated for both species. The NH4-N ratio of 40% and 50% of the total nitrogen benefited the growth of Phalaenopsis and Dendrobium, respectively. The application of higher proportions of ammonium resulted in decreased N, K, Ca and Mg absorption, index of green color and increased leakage of electrolytes in Phalaenopsis and Dendrobium. NH4-N proportions greater than 75% for 12 months caused toxicity in Phalaenopsis and Dendrobium. |
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Impact of nitrate and ammonium ratio on nutrition and growth of two epiphytic orchidsAmmonium toxicityFertigationNutritional statusOrchidaceaePhalaenopsis and Dendrobium do not grow and flower well with 100% ammonium (NH4-N); and there are detailed studies on the effects of nitrate (NO3-N) and ammonium ratios on the flowering, but no information about accumulation of other nutrients and the effects of ammonium toxicity on orchids. For this reason, two experiments were carried out with orchids: Phalaenopsis ‘Golden Peoker’ and Dendrobium ‘Valentine’. Six months after acclimatization the plants were transplanted to individual plastic vessels and the treatments consisted of five ratios (%) of nitrate / ammonium (0/100, 25/75, 50/50, 75/25, 100/0). The sources of NO3-N and NH4-N were calcium nitrate and ammonium sulfate, respectively. After 12 months treatment, when the plants were beginning to issuance of flower stem, the accumulation of: N, P, K, Ca and Mg in the shoot and biometric variables were evaluated for both species. The NH4-N ratio of 40% and 50% of the total nitrogen benefited the growth of Phalaenopsis and Dendrobium, respectively. The application of higher proportions of ammonium resulted in decreased N, K, Ca and Mg absorption, index of green color and increased leakage of electrolytes in Phalaenopsis and Dendrobium. NH4-N proportions greater than 75% for 12 months caused toxicity in Phalaenopsis and Dendrobium.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Faculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista “Júlio de Mesquita Filho”/UNESP, Via de Acesso Prof. Dr. Paulo Donato Castellane, s/n, Zona RuralFaculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista “Júlio de Mesquita Filho”/UNESP, Via de Acesso Prof. Dr. Paulo Donato Castellane, s/n, Zona RuralUniversidade Estadual Paulista (Unesp)Mantovani, Cibele [UNESP]Prado, Renato M. [UNESP]Pivetta, Kathia F. L. [UNESP]2019-10-06T15:30:41Z2019-10-06T15:30:41Z2018-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article3423-3431application/pdfhttp://dx.doi.org/10.1590/0001-3765201820171008Anais da Academia Brasileira de Ciencias, v. 90, n. 4, p. 3423-3431, 2018.1678-26900001-3765http://hdl.handle.net/11449/18725910.1590/0001-3765201820171008S0001-376520180007034232-s2.0-85059822320S0001-37652018000703423.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAnais da Academia Brasileira de Cienciasinfo:eu-repo/semantics/openAccess2024-01-03T06:19:35Zoai:repositorio.unesp.br:11449/187259Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:58:49.323818Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Impact of nitrate and ammonium ratio on nutrition and growth of two epiphytic orchids |
title |
Impact of nitrate and ammonium ratio on nutrition and growth of two epiphytic orchids |
spellingShingle |
Impact of nitrate and ammonium ratio on nutrition and growth of two epiphytic orchids Mantovani, Cibele [UNESP] Ammonium toxicity Fertigation Nutritional status Orchidaceae |
title_short |
Impact of nitrate and ammonium ratio on nutrition and growth of two epiphytic orchids |
title_full |
Impact of nitrate and ammonium ratio on nutrition and growth of two epiphytic orchids |
title_fullStr |
Impact of nitrate and ammonium ratio on nutrition and growth of two epiphytic orchids |
title_full_unstemmed |
Impact of nitrate and ammonium ratio on nutrition and growth of two epiphytic orchids |
title_sort |
Impact of nitrate and ammonium ratio on nutrition and growth of two epiphytic orchids |
author |
Mantovani, Cibele [UNESP] |
author_facet |
Mantovani, Cibele [UNESP] Prado, Renato M. [UNESP] Pivetta, Kathia F. L. [UNESP] |
author_role |
author |
author2 |
Prado, Renato M. [UNESP] Pivetta, Kathia F. L. [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Mantovani, Cibele [UNESP] Prado, Renato M. [UNESP] Pivetta, Kathia F. L. [UNESP] |
dc.subject.por.fl_str_mv |
Ammonium toxicity Fertigation Nutritional status Orchidaceae |
topic |
Ammonium toxicity Fertigation Nutritional status Orchidaceae |
description |
Phalaenopsis and Dendrobium do not grow and flower well with 100% ammonium (NH4-N); and there are detailed studies on the effects of nitrate (NO3-N) and ammonium ratios on the flowering, but no information about accumulation of other nutrients and the effects of ammonium toxicity on orchids. For this reason, two experiments were carried out with orchids: Phalaenopsis ‘Golden Peoker’ and Dendrobium ‘Valentine’. Six months after acclimatization the plants were transplanted to individual plastic vessels and the treatments consisted of five ratios (%) of nitrate / ammonium (0/100, 25/75, 50/50, 75/25, 100/0). The sources of NO3-N and NH4-N were calcium nitrate and ammonium sulfate, respectively. After 12 months treatment, when the plants were beginning to issuance of flower stem, the accumulation of: N, P, K, Ca and Mg in the shoot and biometric variables were evaluated for both species. The NH4-N ratio of 40% and 50% of the total nitrogen benefited the growth of Phalaenopsis and Dendrobium, respectively. The application of higher proportions of ammonium resulted in decreased N, K, Ca and Mg absorption, index of green color and increased leakage of electrolytes in Phalaenopsis and Dendrobium. NH4-N proportions greater than 75% for 12 months caused toxicity in Phalaenopsis and Dendrobium. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-10-01 2019-10-06T15:30:41Z 2019-10-06T15:30:41Z |
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 |
http://dx.doi.org/10.1590/0001-3765201820171008 Anais da Academia Brasileira de Ciencias, v. 90, n. 4, p. 3423-3431, 2018. 1678-2690 0001-3765 http://hdl.handle.net/11449/187259 10.1590/0001-3765201820171008 S0001-37652018000703423 2-s2.0-85059822320 S0001-37652018000703423.pdf |
url |
http://dx.doi.org/10.1590/0001-3765201820171008 http://hdl.handle.net/11449/187259 |
identifier_str_mv |
Anais da Academia Brasileira de Ciencias, v. 90, n. 4, p. 3423-3431, 2018. 1678-2690 0001-3765 10.1590/0001-3765201820171008 S0001-37652018000703423 2-s2.0-85059822320 S0001-37652018000703423.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Anais da Academia Brasileira de Ciencias |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
3423-3431 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129380925308928 |