Effect of nitrogen source on soil nitrate concentration and yield, and quality of intermediate-day onions

Detalhes bibliográficos
Autor(a) principal: Machado, Rui
Data de Publicação: 2013
Outros Autores: Campos, Tiago
Tipo de documento: Artigo de conferência
Idioma: por
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10174/8772
Resumo: The effect of nitrogen source application, broadcast onto the planting bed during the growing phase, on soil nitrate concentration, soil pH, yield, and quality of intermediate-day onions was evaluated in a field experiment in southern Portugal. In addition, the soil potential for providing nitrate-N to the crop along the growing season was also monitored. The field trial consisted of six treatments of different combinations of ammonium nitrate (17% NH4-N + 17% NO3-N) (AN) and ammonium sulphate (20.5 % NH4-N and 60% SO3) (AS) as fertilizers. Soil NO3-N and soil pH were measured at 0, 47, 76, 95, and 124 days after transplanting (DAT). Nitrogen source did not significantly affect the soil nitrate concentration, commercial yield, bulb dry weight, soluble solids or pH. AS-AS application as compared with AN-AN led to a significantly decrease in soil pH. The nitrate release through the mineralization of organic matter began in the first 47 DAT and occurred throughout the growing season. At 0 to 10 cm soil depth from 0 to 47 DAT, nitrate concentration increased by 14.8 mg kg-1. A significant amount of N uptake was provided by the soil, achieving a high commercial yield of 7.52 kg m-2 in the treatment without nitrogen application and 9.05 kg m-2 where N (45kg N/ha) was applied.
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spelling Effect of nitrogen source on soil nitrate concentration and yield, and quality of intermediate-day onionscebolaazotosulfato de amónionitrato de amóniocebola de dias médiosintermediate-day onionsnitrogenAmmonium sulfatenitrateThe effect of nitrogen source application, broadcast onto the planting bed during the growing phase, on soil nitrate concentration, soil pH, yield, and quality of intermediate-day onions was evaluated in a field experiment in southern Portugal. In addition, the soil potential for providing nitrate-N to the crop along the growing season was also monitored. The field trial consisted of six treatments of different combinations of ammonium nitrate (17% NH4-N + 17% NO3-N) (AN) and ammonium sulphate (20.5 % NH4-N and 60% SO3) (AS) as fertilizers. Soil NO3-N and soil pH were measured at 0, 47, 76, 95, and 124 days after transplanting (DAT). Nitrogen source did not significantly affect the soil nitrate concentration, commercial yield, bulb dry weight, soluble solids or pH. AS-AS application as compared with AN-AN led to a significantly decrease in soil pH. The nitrate release through the mineralization of organic matter began in the first 47 DAT and occurred throughout the growing season. At 0 to 10 cm soil depth from 0 to 47 DAT, nitrate concentration increased by 14.8 mg kg-1. A significant amount of N uptake was provided by the soil, achieving a high commercial yield of 7.52 kg m-2 in the treatment without nitrogen application and 9.05 kg m-2 where N (45kg N/ha) was applied.NutriHORT2013-09-23T13:55:24Z2013-09-232013-09-15T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjecthttp://hdl.handle.net/10174/8772http://hdl.handle.net/10174/8772pornaonaosimICAAMrmam@uevora.ptnd582Machado, RuiCampos, Tiagoinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T18:50:12Zoai:dspace.uevora.pt:10174/8772Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:03:01.023337Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Effect of nitrogen source on soil nitrate concentration and yield, and quality of intermediate-day onions
title Effect of nitrogen source on soil nitrate concentration and yield, and quality of intermediate-day onions
spellingShingle Effect of nitrogen source on soil nitrate concentration and yield, and quality of intermediate-day onions
Machado, Rui
cebola
azoto
sulfato de amónio
nitrato de amónio
cebola de dias médios
intermediate-day onions
nitrogen
Ammonium sulfate
nitrate
title_short Effect of nitrogen source on soil nitrate concentration and yield, and quality of intermediate-day onions
title_full Effect of nitrogen source on soil nitrate concentration and yield, and quality of intermediate-day onions
title_fullStr Effect of nitrogen source on soil nitrate concentration and yield, and quality of intermediate-day onions
title_full_unstemmed Effect of nitrogen source on soil nitrate concentration and yield, and quality of intermediate-day onions
title_sort Effect of nitrogen source on soil nitrate concentration and yield, and quality of intermediate-day onions
author Machado, Rui
author_facet Machado, Rui
Campos, Tiago
author_role author
author2 Campos, Tiago
author2_role author
dc.contributor.author.fl_str_mv Machado, Rui
Campos, Tiago
dc.subject.por.fl_str_mv cebola
azoto
sulfato de amónio
nitrato de amónio
cebola de dias médios
intermediate-day onions
nitrogen
Ammonium sulfate
nitrate
topic cebola
azoto
sulfato de amónio
nitrato de amónio
cebola de dias médios
intermediate-day onions
nitrogen
Ammonium sulfate
nitrate
description The effect of nitrogen source application, broadcast onto the planting bed during the growing phase, on soil nitrate concentration, soil pH, yield, and quality of intermediate-day onions was evaluated in a field experiment in southern Portugal. In addition, the soil potential for providing nitrate-N to the crop along the growing season was also monitored. The field trial consisted of six treatments of different combinations of ammonium nitrate (17% NH4-N + 17% NO3-N) (AN) and ammonium sulphate (20.5 % NH4-N and 60% SO3) (AS) as fertilizers. Soil NO3-N and soil pH were measured at 0, 47, 76, 95, and 124 days after transplanting (DAT). Nitrogen source did not significantly affect the soil nitrate concentration, commercial yield, bulb dry weight, soluble solids or pH. AS-AS application as compared with AN-AN led to a significantly decrease in soil pH. The nitrate release through the mineralization of organic matter began in the first 47 DAT and occurred throughout the growing season. At 0 to 10 cm soil depth from 0 to 47 DAT, nitrate concentration increased by 14.8 mg kg-1. A significant amount of N uptake was provided by the soil, achieving a high commercial yield of 7.52 kg m-2 in the treatment without nitrogen application and 9.05 kg m-2 where N (45kg N/ha) was applied.
publishDate 2013
dc.date.none.fl_str_mv 2013-09-23T13:55:24Z
2013-09-23
2013-09-15T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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format conferenceObject
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10174/8772
http://hdl.handle.net/10174/8772
url http://hdl.handle.net/10174/8772
dc.language.iso.fl_str_mv por
language por
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ICAAM
rmam@uevora.pt
nd
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dc.publisher.none.fl_str_mv NutriHORT
publisher.none.fl_str_mv NutriHORT
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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