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

Detalhes bibliográficos
Autor(a) principal: Guelfi-Silva,Douglas Ramos
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: Revista ciência agronômica (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902013000200008
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 sourcesLactuca sativa LSilicate rocksMining by-productsThe 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.Universidade Federal do Ceará2013-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902013000200008Revista Ciência Agronômica v.44 n.2 2013reponame:Revista ciência agronômica (Online)instname:Universidade Federal do Ceará (UFC)instacron:UFC10.1590/S1806-66902013000200008info:eu-repo/semantics/openAccessGuelfi-Silva,Douglas RamosMarchi,GiulianoSpehar,Carlos RobertoGuilherme,Luiz Roberto GuimarãesFaquin,Valdemareng2013-02-14T00:00:00Zoai:scielo:S1806-66902013000200008Revistahttp://www.ccarevista.ufc.br/PUBhttps://old.scielo.br/oai/scielo-oai.php||alekdutra@ufc.br|| ccarev@ufc.br1806-66900045-6888opendoar:2013-02-14T00:00Revista ciência agronômica (Online) - Universidade Federal do Ceará (UFC)false
dc.title.none.fl_str_mv Agronomic efficiency of potassium fertilization in lettuce fertilized with alternative nutrient sources
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
Guelfi-Silva,Douglas Ramos
Lactuca sativa L
Silicate rocks
Mining by-products
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 Guelfi-Silva,Douglas Ramos
author_facet Guelfi-Silva,Douglas Ramos
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 Guelfi-Silva,Douglas Ramos
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
topic Lactuca sativa L
Silicate rocks
Mining by-products
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 2013-06-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902013000200008
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902013000200008
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1806-66902013000200008
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
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 v.44 n.2 2013
reponame:Revista ciência agronômica (Online)
instname:Universidade Federal do Ceará (UFC)
instacron:UFC
instname_str Universidade Federal do Ceará (UFC)
instacron_str UFC
institution UFC
reponame_str Revista ciência agronômica (Online)
collection Revista ciência agronômica (Online)
repository.name.fl_str_mv Revista ciência agronômica (Online) - Universidade Federal do Ceará (UFC)
repository.mail.fl_str_mv ||alekdutra@ufc.br|| ccarev@ufc.br
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