Agronomic efficiency of potassium fertilization in lettuce fertilized with alternative nutrient sources
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , |
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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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 |
format |
article |
status_str |
publishedVersion |
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 |
_version_ |
1750297486655750144 |