Use este identificador para citar ou linkar para este item:
http://repositorio.ufla.br/jspui/handle/1/50155
Registro completo de metadados
Campo DC | Valor | Idioma |
---|---|---|
dc.creator | Wenceslau, Daiane de Souza Lauton | - |
dc.creator | Oliveira, Daniele Fátima de | - |
dc.creator | Rabelo, Hudson de Oliveira | - |
dc.creator | Ferbonink, Guilherme Ferreira | - |
dc.creator | Gomes, Luiz Antônio Augusto | - |
dc.creator | Leonel, Érica Carina Aparecida | - |
dc.creator | Caione, Gustavo | - |
dc.date.accessioned | 2022-06-09T16:50:03Z | - |
dc.date.available | 2022-06-09T16:50:03Z | - |
dc.date.issued | 2021-06-30 | - |
dc.identifier.citation | WENCESLAU, D. de S. L. et al. Nitrate concentration and nitrate/ammonium ratio on lettuce grown in hydroponics in Southern Amazon. African Journal of Agricultural Research , [S.l.], v. 17, n. 6, p. 862-868, June 2021. DOI: 10.5897/AJAR2020.15087. | pt_BR |
dc.identifier.uri | http://repositorio.ufla.br/jspui/handle/1/50155 | - |
dc.description.abstract | Lettuce has a predisposition to nitrate accumulation and has led many researchers to develop research to reduce this accumulation. The objective of this study was to evaluate the effect of nitrate concentration (NO3-) and nitrate/ammonium ratio (NO3-:NH4+) on growth, production and accumulation of these nitrogen compounds in lettuce grown in a hydroponic system in southern Amazon. There were performed two experiments with Iceberg lettuce type, in a floating-hydroponic system under protected cultivation. In the first experiment, five nitrate concentrations (2.5, 5.0, 7.5, 10.0 and 15.0 mmol L-1) were evaluated. In the second experiment, the best NO3- : NH4+ ratio was evaluated with five proportions 0:100, 25:75, 50:50, 75:25 and 100:0 in the nutrient solution. At 35 days after transplanting, the evaluations were performed. The nutrient solution containing nitrogen (N) as nitrate source in the concentration of 15.0 mmol L-1 contributed to higher lettuce productivity, being the concentration recommended for hydroponic grown system in southern Amazon. It is recommended to use about 23% of the N in nutrient solution in ammonium form, where higher N-ammonium concentrations are not indicated for Icebeg lettuce type because it reduces the productivity of this green leaf vegetable, causing toxicity symptoms. | pt_BR |
dc.language | en_US | pt_BR |
dc.publisher | Academic Journals (AJ) | pt_BR |
dc.rights | Attribution 4.0 International | * |
dc.rights | acesso aberto | pt_BR |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | * |
dc.source | African Journal of Agricultural Research (AJAR) | pt_BR |
dc.subject | Nitrogen | pt_BR |
dc.subject | Vegetable | pt_BR |
dc.subject | Nutrient solution | pt_BR |
dc.subject | Food security | pt_BR |
dc.title | Nitrate concentration and nitrate/ammonium ratio on lettuce grown in hydroponics in Southern Amazon | pt_BR |
dc.type | Artigo | pt_BR |
Aparece nas coleções: | DAG - Artigos publicados em periódicos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
---|---|---|---|---|
ARTIGO_Nitrate concentration and nitrateammonium ratio on lettuce grown in hydroponics in Southern Amazon.pdf | 283,81 kB | Adobe PDF | Visualizar/Abrir |
Este item está licenciada sob uma Licença Creative Commons