Local de aplicação do fósforo, sistema radicular e produtividade da cultura da soja em plantio direto
Ano de defesa: | 2016 |
---|---|
Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | , |
Tipo de documento: | Tese |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Universidade Federal de Santa Maria
Centro de Ciências Rurais |
Programa de Pós-Graduação: |
Programa de Pós-Graduação em Engenharia Agrícola
|
Departamento: |
Engenharia Agrícola
|
País: |
Brasil
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://repositorio.ufsm.br/handle/1/18225 |
Resumo: | Modern agriculture presents constant challenges, among them productive and economical. The target on greater productivity and efficiency in the field leads to improvements of techniques performed today. Before a production system such as no-till and its limitations, the management of fertilization, especially phosphorus, is highlighted. Therefore, fertilization management can alter the P uptake dynamic, as much as the plant's capacity to adapt to different environmental conditions. The field study consists of three steps, resulting from experiments conducted near Não-Me-Toque-RS (Field 1) and Sao-Sepe-RS (Field 2), Southern Brazil, during the agricultural year 2014/2015. The experimental conditions where the plants were evaluated had similar climate, incident solar radiation and relief characteristics, but different soil physical and chemical characteristics. The soil management system adopted in both experimental areas is no-till. The experimental design was a randomized complete blocks with four replicates and five treatments. Individual plot size was 15 m wide x 200 m long. The treatments consist of five P allocation depths: subsoiler + deep band (20 cm), subsoiler + in-furrow (10 cm), broadcast, in-furrow (10 cm), and above seed (0-5 cm). The phosphorus source used was triple superphosphate (0-42-0) at rate of 70 kg ha-1. The results are presented and discussed in the form of articles, and addressed aspects related to changes in root growth provided by the P placement (Article 1), use and balance of P in each P placement (Article 2) and the impact of P placement in water stress conditions (Article 3). Finally, for a general approach of the study it was necessary a discussion covering the three studies. Phosphorus deep band showed higher root growth at 20-25 cm depth, greater soil P recovery and use, and lower losses by water stress. |
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2019-09-13T17:44:29Z2019-09-13T17:44:29Z2016-07-07http://repositorio.ufsm.br/handle/1/18225Modern agriculture presents constant challenges, among them productive and economical. The target on greater productivity and efficiency in the field leads to improvements of techniques performed today. Before a production system such as no-till and its limitations, the management of fertilization, especially phosphorus, is highlighted. Therefore, fertilization management can alter the P uptake dynamic, as much as the plant's capacity to adapt to different environmental conditions. The field study consists of three steps, resulting from experiments conducted near Não-Me-Toque-RS (Field 1) and Sao-Sepe-RS (Field 2), Southern Brazil, during the agricultural year 2014/2015. The experimental conditions where the plants were evaluated had similar climate, incident solar radiation and relief characteristics, but different soil physical and chemical characteristics. The soil management system adopted in both experimental areas is no-till. The experimental design was a randomized complete blocks with four replicates and five treatments. Individual plot size was 15 m wide x 200 m long. The treatments consist of five P allocation depths: subsoiler + deep band (20 cm), subsoiler + in-furrow (10 cm), broadcast, in-furrow (10 cm), and above seed (0-5 cm). The phosphorus source used was triple superphosphate (0-42-0) at rate of 70 kg ha-1. The results are presented and discussed in the form of articles, and addressed aspects related to changes in root growth provided by the P placement (Article 1), use and balance of P in each P placement (Article 2) and the impact of P placement in water stress conditions (Article 3). Finally, for a general approach of the study it was necessary a discussion covering the three studies. Phosphorus deep band showed higher root growth at 20-25 cm depth, greater soil P recovery and use, and lower losses by water stress.A agricultura moderna apresenta constantes desafios, dentre eles produtivos e econômicos. A busca de maiores produtividades e eficiência no campo conduz a aprimoramentos das técnicas hoje realizadas. Diante de um sistema produtivo como a semeadura direta e seus limitantes, o manejo da fertilização, principalmente a fosfatada, ganha destaque. Para um melhor uso-eficiente deste recurso não renovável estudos visam o entendimento dos fatores responsáveis por sua disponibilidade no solo e em que magnitude a planta utiliza o fósforo (P) provindo do solo. Neste caso, estratégias relacionadas ao manejo do fertilizante fosfatado no solo podem alterar a dinâmica de absorção do P, tanto quanto a capacidade de adaptação da planta às condições ambientais diversas. O trabalho a seguir é constituído por três etapas, resultante de experimentos realizados nos municípios de Não-Me-Toque-RS (Field 1) e São-Sepé-RS (Field 2), sul do Brazil, durante o ano agrícola de 2014/2015. As condições experimentais as quais as plantas foram analisadas continham semelhantes climas, radiação solar e relevo, porém diferentes características químicas e físicas do solo. O sistema de manejo do solo adotado em ambas as áreas é o sistema de semeadura direta. O experimento foi delineado em blocos ao acaso com quatro repetições e cinco tratamentos. As parcelas possuiam dimensões de 15 x 200 m. Os tratamentos consistem de cinco profundidades de alocação de P: subsolador + fertilização profunda (20 cm), subsolador + na linha de semeadura (10 cm), a lanço, na linha de semeadura (10 cm) e acima da semente (0-5 cm). A fonte fosfatada utilizada foi o superfosfato triplo (0-42-0) na dose de 70 kg ha-1. Os resultados estão apresentados e discutidos na forma de artigos científicos, sendo abordados aspectos relacionados a mudanças no crescimento radicular proporcionados pelo manejo do P (Artigo 1), uso e balanço do P em cada manejo de fertilização fosfatada (Artigo 2) e o impacto do manejo da fertilização fosfatada em situações de estresse hídrico (Artigo 3). Por fim, para uma abordagem geral do estudo fez-se necessária uma discussão abrangendo os três artigos. A fertilização fosfatada profunda proporcionou maior crescimento do sistema radicular na profundidade de 20-25 cm, maior recuperação e uso do P no solo e menores perdas em produtividade devido estresse hídrico.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESporUniversidade Federal de Santa MariaCentro de Ciências RuraisPrograma de Pós-Graduação em Engenharia AgrícolaUFSMBrasilEngenharia AgrícolaAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessManejo do fósforoFertilização profundaGlycine maxPhosphorus managementDeep fertilizationCNPQ::CIENCIAS AGRARIAS::ENGENHARIA AGRICOLALocal de aplicação do fósforo, sistema radicular e produtividade da cultura da soja em plantio diretoPhosphorus placement, root system and soybean crop yield in no-till systeminfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisAmado, Telmo Jorge Carneirohttp://lattes.cnpq.br/8591926237097756Lollato, Rômulo Pisahttp://lattes.cnpq.br/3241708742019507Abreu, Silvano Luiz dehttp://lattes.cnpq.br/9347725321112508http://lattes.cnpq.br/3324087992932777Hansel, Fernando Dubou5003000000086008744c75f-e323-495a-80de-7684a957d85e3157f07f-1718-4e06-86a3-f2be10155aef2e77c4e9-6dcd-475a-874b-97ad88a9286c7387a435-6bce-4e9a-9751-0b8a1cadf1eereponame:Biblioteca Digital de Teses e Dissertações do UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALTES_PPGEA_2016_HANSEL_FERNANDO.pdfTES_PPGEA_2016_HANSEL_FERNANDO.pdfTese de Doutoradoapplication/pdf1470761http://repositorio.ufsm.br/bitstream/1/18225/1/TES_PPGEA_2016_HANSEL_FERNANDO.pdf5cfca5de2ea05ecb3142cac8b6575abcMD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; 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dc.title.por.fl_str_mv |
Local de aplicação do fósforo, sistema radicular e produtividade da cultura da soja em plantio direto |
dc.title.alternative.eng.fl_str_mv |
Phosphorus placement, root system and soybean crop yield in no-till system |
title |
Local de aplicação do fósforo, sistema radicular e produtividade da cultura da soja em plantio direto |
spellingShingle |
Local de aplicação do fósforo, sistema radicular e produtividade da cultura da soja em plantio direto Hansel, Fernando Dubou Manejo do fósforo Fertilização profunda Glycine max Phosphorus management Deep fertilization CNPQ::CIENCIAS AGRARIAS::ENGENHARIA AGRICOLA |
title_short |
Local de aplicação do fósforo, sistema radicular e produtividade da cultura da soja em plantio direto |
title_full |
Local de aplicação do fósforo, sistema radicular e produtividade da cultura da soja em plantio direto |
title_fullStr |
Local de aplicação do fósforo, sistema radicular e produtividade da cultura da soja em plantio direto |
title_full_unstemmed |
Local de aplicação do fósforo, sistema radicular e produtividade da cultura da soja em plantio direto |
title_sort |
Local de aplicação do fósforo, sistema radicular e produtividade da cultura da soja em plantio direto |
author |
Hansel, Fernando Dubou |
author_facet |
Hansel, Fernando Dubou |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Amado, Telmo Jorge Carneiro |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/8591926237097756 |
dc.contributor.referee1.fl_str_mv |
Lollato, Rômulo Pisa |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/3241708742019507 |
dc.contributor.referee2.fl_str_mv |
Abreu, Silvano Luiz de |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/9347725321112508 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/3324087992932777 |
dc.contributor.author.fl_str_mv |
Hansel, Fernando Dubou |
contributor_str_mv |
Amado, Telmo Jorge Carneiro Lollato, Rômulo Pisa Abreu, Silvano Luiz de |
dc.subject.por.fl_str_mv |
Manejo do fósforo Fertilização profunda Glycine max |
topic |
Manejo do fósforo Fertilização profunda Glycine max Phosphorus management Deep fertilization CNPQ::CIENCIAS AGRARIAS::ENGENHARIA AGRICOLA |
dc.subject.eng.fl_str_mv |
Phosphorus management Deep fertilization |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::ENGENHARIA AGRICOLA |
description |
Modern agriculture presents constant challenges, among them productive and economical. The target on greater productivity and efficiency in the field leads to improvements of techniques performed today. Before a production system such as no-till and its limitations, the management of fertilization, especially phosphorus, is highlighted. Therefore, fertilization management can alter the P uptake dynamic, as much as the plant's capacity to adapt to different environmental conditions. The field study consists of three steps, resulting from experiments conducted near Não-Me-Toque-RS (Field 1) and Sao-Sepe-RS (Field 2), Southern Brazil, during the agricultural year 2014/2015. The experimental conditions where the plants were evaluated had similar climate, incident solar radiation and relief characteristics, but different soil physical and chemical characteristics. The soil management system adopted in both experimental areas is no-till. The experimental design was a randomized complete blocks with four replicates and five treatments. Individual plot size was 15 m wide x 200 m long. The treatments consist of five P allocation depths: subsoiler + deep band (20 cm), subsoiler + in-furrow (10 cm), broadcast, in-furrow (10 cm), and above seed (0-5 cm). The phosphorus source used was triple superphosphate (0-42-0) at rate of 70 kg ha-1. The results are presented and discussed in the form of articles, and addressed aspects related to changes in root growth provided by the P placement (Article 1), use and balance of P in each P placement (Article 2) and the impact of P placement in water stress conditions (Article 3). Finally, for a general approach of the study it was necessary a discussion covering the three studies. Phosphorus deep band showed higher root growth at 20-25 cm depth, greater soil P recovery and use, and lower losses by water stress. |
publishDate |
2016 |
dc.date.issued.fl_str_mv |
2016-07-07 |
dc.date.accessioned.fl_str_mv |
2019-09-13T17:44:29Z |
dc.date.available.fl_str_mv |
2019-09-13T17:44:29Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/18225 |
url |
http://repositorio.ufsm.br/handle/1/18225 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.cnpq.fl_str_mv |
500300000008 |
dc.relation.confidence.fl_str_mv |
600 |
dc.relation.authority.fl_str_mv |
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dc.rights.driver.fl_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências Rurais |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Engenharia Agrícola |
dc.publisher.initials.fl_str_mv |
UFSM |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Engenharia Agrícola |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências Rurais |
dc.source.none.fl_str_mv |
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