Agronomic efficiency of potassium fertilization in lettuce fertilized with alternative nutrient sources

Detalhes bibliográficos
Autor(a) principal: Silva, Douglas Ramos Guelfi
Data de Publicação: 2013
Outros Autores: Marchi, Giuliano, Spehar, Carlos Roberto, Guilherme, Luiz Roberto Guimarães, Faquin, Valdemar
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/28183
Resumo: The aim of this study was to evaluate the effect of alternative sources of nutrients on the nutrition, yield and efficiency of potassium fertilization in lettuce. The experiment was carried out in a greenhouse, using 3.7 kg pots filled with a dystrophic red-yellow Latosol of medium texture. The experimental design was randomized, with treatments divided into a 4 x 6 factorial: four doses of potassium (0; 200; 400; 600 kg ha-1 K2O) and six alternative sources of nutrients (breccia, ultramafic, biotite schist, phlogopite, and mining and Chapada by-products), with four replications. Content and accumulation were determined for potassium (K), copper (Cu), zinc (Zn) and nickel (Ni) in the lettuce shoots, and from these data two indices were calculated for the efficiency of potassium as a fertilizer. The application of increasing values of alternative sources of nutrients promoted improvements in nutrition and increases in lettuce yield. The efficiency of potassium fertilization decreased with the increase in values of potassium taken from alternative nutrient sources, with the mining by-products and the ultramafic being superior to the other sources. Crushed silicate rocks and mining by-products can therefore both be used as fertilizer in organic and conventional production systems.
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spelling Agronomic efficiency of potassium fertilization in lettuce fertilized with alternative nutrient sourcesEficiência agronômica da adubação potássica na alface adubada com fontes alternativas de nutrientesLactuca sativa L.Silicate rocksMining by-productsRochas silicáticasSubproduto de mineraçãoThe aim of this study was to evaluate the effect of alternative sources of nutrients on the nutrition, yield and efficiency of potassium fertilization in lettuce. The experiment was carried out in a greenhouse, using 3.7 kg pots filled with a dystrophic red-yellow Latosol of medium texture. The experimental design was randomized, with treatments divided into a 4 x 6 factorial: four doses of potassium (0; 200; 400; 600 kg ha-1 K2O) and six alternative sources of nutrients (breccia, ultramafic, biotite schist, phlogopite, and mining and Chapada by-products), with four replications. Content and accumulation were determined for potassium (K), copper (Cu), zinc (Zn) and nickel (Ni) in the lettuce shoots, and from these data two indices were calculated for the efficiency of potassium as a fertilizer. The application of increasing values of alternative sources of nutrients promoted improvements in nutrition and increases in lettuce yield. The efficiency of potassium fertilization decreased with the increase in values of potassium taken from alternative nutrient sources, with the mining by-products and the ultramafic being superior to the other sources. Crushed silicate rocks and mining by-products can therefore both be used as fertilizer in organic and conventional production systems.O objetivo desse estudo foi avaliar o efeito da aplicação de fontes alternativas de nutrientes na nutrição, produção e eficiência da adubação potássica na alface. O experimento foi conduzido em casa de vegetação, em vasos com 3,7 kg preenchidos com um Latossolo Vermelho Amarelo distrófico de textura média. O delineamento experimental foi inteiramente casualizado e os tratamentos foram distribuídos em arranjo fatorial 4 x 6, sendo quatro doses de potássio (0; 200; 400; 600 kg ha-1 de K2O) e seis fontes alternativas de nutrientes (brecha, ultramáfica, biotita xisto, flogopitito, subproduto de mineração e subproduto de chapada), com quatro repetições. Foram determinados o teor e o acúmulo de potássio (K), cobre (Cu), zinco (Zn) e níquel (Ni) na parte aérea da alface e com esses dados foram calculados dois índices de eficiência da adubação potássica. As aplicações de doses crescentes das fontes alternativas de nutrientes promoveram melhorias na nutrição e aumentos na produção da alface. A eficiência da adubação potássica diminuiu com o aumento nas doses de potássio aplicadas pelas fontes alternativas de nutrientes, sendo que o subproduto de mineração e a ultramáfica foram superiores às demais fontes. Diante disso, pode-se afirmar que as rochas silicáticas moídas e os subprodutos de mineração constituem uma opção para adubação em sistemas de produção orgânica e convencional.Universidade Federal do Ceará2017-11-28T15:50:47Z2017-11-28T15:50:47Z2013info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfSILVA, D. R. G. et al. Agronomic efficiency of potassium fertilization in lettuce fertilized with alternative nutrient sources. Revista Ciência Agronômica, Fortaleza, v. 44, n. 2, p. 267-277, abr./jun. 2013.http://repositorio.ufla.br/jspui/handle/1/28183Revista Ciência Agronômicareponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessSilva, Douglas Ramos GuelfiMarchi, GiulianoSpehar, Carlos RobertoGuilherme, Luiz Roberto GuimarãesFaquin, Valdemareng2017-11-28T15:50:48Zoai:localhost:1/28183Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2017-11-28T15:50:48Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Agronomic efficiency of potassium fertilization in lettuce fertilized with alternative nutrient sources
Eficiência agronômica da adubação potássica na alface adubada com fontes alternativas de nutrientes
title Agronomic efficiency of potassium fertilization in lettuce fertilized with alternative nutrient sources
spellingShingle Agronomic efficiency of potassium fertilization in lettuce fertilized with alternative nutrient sources
Silva, Douglas Ramos Guelfi
Lactuca sativa L.
Silicate rocks
Mining by-products
Rochas silicáticas
Subproduto de mineração
title_short Agronomic efficiency of potassium fertilization in lettuce fertilized with alternative nutrient sources
title_full Agronomic efficiency of potassium fertilization in lettuce fertilized with alternative nutrient sources
title_fullStr Agronomic efficiency of potassium fertilization in lettuce fertilized with alternative nutrient sources
title_full_unstemmed Agronomic efficiency of potassium fertilization in lettuce fertilized with alternative nutrient sources
title_sort Agronomic efficiency of potassium fertilization in lettuce fertilized with alternative nutrient sources
author Silva, Douglas Ramos Guelfi
author_facet Silva, Douglas Ramos Guelfi
Marchi, Giuliano
Spehar, Carlos Roberto
Guilherme, Luiz Roberto Guimarães
Faquin, Valdemar
author_role author
author2 Marchi, Giuliano
Spehar, Carlos Roberto
Guilherme, Luiz Roberto Guimarães
Faquin, Valdemar
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Silva, Douglas Ramos Guelfi
Marchi, Giuliano
Spehar, Carlos Roberto
Guilherme, Luiz Roberto Guimarães
Faquin, Valdemar
dc.subject.por.fl_str_mv Lactuca sativa L.
Silicate rocks
Mining by-products
Rochas silicáticas
Subproduto de mineração
topic Lactuca sativa L.
Silicate rocks
Mining by-products
Rochas silicáticas
Subproduto de mineração
description The aim of this study was to evaluate the effect of alternative sources of nutrients on the nutrition, yield and efficiency of potassium fertilization in lettuce. The experiment was carried out in a greenhouse, using 3.7 kg pots filled with a dystrophic red-yellow Latosol of medium texture. The experimental design was randomized, with treatments divided into a 4 x 6 factorial: four doses of potassium (0; 200; 400; 600 kg ha-1 K2O) and six alternative sources of nutrients (breccia, ultramafic, biotite schist, phlogopite, and mining and Chapada by-products), with four replications. Content and accumulation were determined for potassium (K), copper (Cu), zinc (Zn) and nickel (Ni) in the lettuce shoots, and from these data two indices were calculated for the efficiency of potassium as a fertilizer. The application of increasing values of alternative sources of nutrients promoted improvements in nutrition and increases in lettuce yield. The efficiency of potassium fertilization decreased with the increase in values of potassium taken from alternative nutrient sources, with the mining by-products and the ultramafic being superior to the other sources. Crushed silicate rocks and mining by-products can therefore both be used as fertilizer in organic and conventional production systems.
publishDate 2013
dc.date.none.fl_str_mv 2013
2017-11-28T15:50:47Z
2017-11-28T15:50:47Z
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 SILVA, D. R. G. et al. Agronomic efficiency of potassium fertilization in lettuce fertilized with alternative nutrient sources. Revista Ciência Agronômica, Fortaleza, v. 44, n. 2, p. 267-277, abr./jun. 2013.
http://repositorio.ufla.br/jspui/handle/1/28183
identifier_str_mv SILVA, D. R. G. et al. Agronomic efficiency of potassium fertilization in lettuce fertilized with alternative nutrient sources. Revista Ciência Agronômica, Fortaleza, v. 44, n. 2, p. 267-277, abr./jun. 2013.
url http://repositorio.ufla.br/jspui/handle/1/28183
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal do Ceará
publisher.none.fl_str_mv Universidade Federal do Ceará
dc.source.none.fl_str_mv Revista Ciência Agronômica
reponame:Repositório Institucional da UFLA
instname:Universidade Federal de Lavras (UFLA)
instacron:UFLA
instname_str Universidade Federal de Lavras (UFLA)
instacron_str UFLA
institution UFLA
reponame_str Repositório Institucional da UFLA
collection Repositório Institucional da UFLA
repository.name.fl_str_mv Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)
repository.mail.fl_str_mv nivaldo@ufla.br || repositorio.biblioteca@ufla.br
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