Uptake and exportation of micronutrients by transgenic cultivars
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/34832 |
Resumo: | Introducing cultivars of high productive potential with adequate agronomic management has contributed to the increase of maize yield in Brazil. This study aimed to characterize the extraction and exportation of micronutrients by modern maize hybrids grown in no-tillage system in the Cerrado region (Brazilian Savannah) with two fertilization levels. We established two crop environments with differentiated levels of soil fertilization, use of products for seed treatment and leaf fertilization, in which four transgenic hybrids were grown. For each environment, we used an experimental design of randomized blocks with four replicates. There were eleven plant samplings during the crop cycle to quantify dry mass production and Cu, Fe, Mn and Zn extraction. Micronutrient uptake is increased when a hybrid with higher potential for biomass production grows in an environment with greater supply of nutrients. Uptake persists throughout the maize cycle, including during the final stages of the reproductive phase, showing late demand for the crop. On average, after tasseling, about 39, 50, 42, and 49% of the total Cu, Fe, Mn and Zn absorption still occurs, respectively. Total uptake of Cu, Fe, Mn and Zn are, respectively, around 8, 199, 58 and 40 g to produce a tonne of grain, from which 23, 5, 8, and 42% are exported by the harvest. Micronutrient uptake and exportation rates for the studied transgenic hybrids are lower than the ones previously reported in Brazil and in works abroad. |
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Uptake and exportation of micronutrients by transgenic cultivarsAbsorption marchHigh yieldNutritional requirementsZea mays L.Introducing cultivars of high productive potential with adequate agronomic management has contributed to the increase of maize yield in Brazil. This study aimed to characterize the extraction and exportation of micronutrients by modern maize hybrids grown in no-tillage system in the Cerrado region (Brazilian Savannah) with two fertilization levels. We established two crop environments with differentiated levels of soil fertilization, use of products for seed treatment and leaf fertilization, in which four transgenic hybrids were grown. For each environment, we used an experimental design of randomized blocks with four replicates. There were eleven plant samplings during the crop cycle to quantify dry mass production and Cu, Fe, Mn and Zn extraction. Micronutrient uptake is increased when a hybrid with higher potential for biomass production grows in an environment with greater supply of nutrients. Uptake persists throughout the maize cycle, including during the final stages of the reproductive phase, showing late demand for the crop. On average, after tasseling, about 39, 50, 42, and 49% of the total Cu, Fe, Mn and Zn absorption still occurs, respectively. Total uptake of Cu, Fe, Mn and Zn are, respectively, around 8, 199, 58 and 40 g to produce a tonne of grain, from which 23, 5, 8, and 42% are exported by the harvest. Micronutrient uptake and exportation rates for the studied transgenic hybrids are lower than the ones previously reported in Brazil and in works abroad.Canadian Center of Science and Education (CCSE)2019-06-19T17:13:34Z2019-06-19T17:13:34Z2018info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfMARTINEZ GUTIERREZ, A. et al. Uptake and exportation of micronutrients by transgenic cultivars of maize under no-tillage in the brazilian cerrado. Journal of Agricultural Science, [S.l.], v. 10, n. 9, p. 304-314, 2018. DOI: 10.5539/jas.v10n9p304.http://repositorio.ufla.br/jspui/handle/1/34832Journal of Agricultural Science (JAS)reponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessMartinez Gutierrez, AaronResende, Álvaro Vilela deSilva, Carine Gregorio MachadoMartins, Denize CarvalhoSimão, Eduardo de PaulaMoreira, Silvino GuimarãesFerreira, Jose Paulo da Costaeng2019-06-19T17:13:35Zoai:localhost:1/34832Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2019-06-19T17:13:35Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Uptake and exportation of micronutrients by transgenic cultivars |
title |
Uptake and exportation of micronutrients by transgenic cultivars |
spellingShingle |
Uptake and exportation of micronutrients by transgenic cultivars Martinez Gutierrez, Aaron Absorption march High yield Nutritional requirements Zea mays L. |
title_short |
Uptake and exportation of micronutrients by transgenic cultivars |
title_full |
Uptake and exportation of micronutrients by transgenic cultivars |
title_fullStr |
Uptake and exportation of micronutrients by transgenic cultivars |
title_full_unstemmed |
Uptake and exportation of micronutrients by transgenic cultivars |
title_sort |
Uptake and exportation of micronutrients by transgenic cultivars |
author |
Martinez Gutierrez, Aaron |
author_facet |
Martinez Gutierrez, Aaron Resende, Álvaro Vilela de Silva, Carine Gregorio Machado Martins, Denize Carvalho Simão, Eduardo de Paula Moreira, Silvino Guimarães Ferreira, Jose Paulo da Costa |
author_role |
author |
author2 |
Resende, Álvaro Vilela de Silva, Carine Gregorio Machado Martins, Denize Carvalho Simão, Eduardo de Paula Moreira, Silvino Guimarães Ferreira, Jose Paulo da Costa |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Martinez Gutierrez, Aaron Resende, Álvaro Vilela de Silva, Carine Gregorio Machado Martins, Denize Carvalho Simão, Eduardo de Paula Moreira, Silvino Guimarães Ferreira, Jose Paulo da Costa |
dc.subject.por.fl_str_mv |
Absorption march High yield Nutritional requirements Zea mays L. |
topic |
Absorption march High yield Nutritional requirements Zea mays L. |
description |
Introducing cultivars of high productive potential with adequate agronomic management has contributed to the increase of maize yield in Brazil. This study aimed to characterize the extraction and exportation of micronutrients by modern maize hybrids grown in no-tillage system in the Cerrado region (Brazilian Savannah) with two fertilization levels. We established two crop environments with differentiated levels of soil fertilization, use of products for seed treatment and leaf fertilization, in which four transgenic hybrids were grown. For each environment, we used an experimental design of randomized blocks with four replicates. There were eleven plant samplings during the crop cycle to quantify dry mass production and Cu, Fe, Mn and Zn extraction. Micronutrient uptake is increased when a hybrid with higher potential for biomass production grows in an environment with greater supply of nutrients. Uptake persists throughout the maize cycle, including during the final stages of the reproductive phase, showing late demand for the crop. On average, after tasseling, about 39, 50, 42, and 49% of the total Cu, Fe, Mn and Zn absorption still occurs, respectively. Total uptake of Cu, Fe, Mn and Zn are, respectively, around 8, 199, 58 and 40 g to produce a tonne of grain, from which 23, 5, 8, and 42% are exported by the harvest. Micronutrient uptake and exportation rates for the studied transgenic hybrids are lower than the ones previously reported in Brazil and in works abroad. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018 2019-06-19T17:13:34Z 2019-06-19T17:13:34Z |
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 |
MARTINEZ GUTIERREZ, A. et al. Uptake and exportation of micronutrients by transgenic cultivars of maize under no-tillage in the brazilian cerrado. Journal of Agricultural Science, [S.l.], v. 10, n. 9, p. 304-314, 2018. DOI: 10.5539/jas.v10n9p304. http://repositorio.ufla.br/jspui/handle/1/34832 |
identifier_str_mv |
MARTINEZ GUTIERREZ, A. et al. Uptake and exportation of micronutrients by transgenic cultivars of maize under no-tillage in the brazilian cerrado. Journal of Agricultural Science, [S.l.], v. 10, n. 9, p. 304-314, 2018. DOI: 10.5539/jas.v10n9p304. |
url |
http://repositorio.ufla.br/jspui/handle/1/34832 |
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 |
Canadian Center of Science and Education (CCSE) |
publisher.none.fl_str_mv |
Canadian Center of Science and Education (CCSE) |
dc.source.none.fl_str_mv |
Journal of Agricultural Science (JAS) 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 |
_version_ |
1815439022327070720 |