Perdas de nutrientes associadas ao escoamento e aos sedimentos erodidos em encostas sob plantio direto
Ano de defesa: | 2022 |
---|---|
Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | , |
Tipo de documento: | Dissertação |
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 Ciência do Solo
|
Departamento: |
Agronomia
|
País: |
Brasil
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://repositorio.ufsm.br/handle/1/28295 |
Resumo: | No-tillage (NT) is widely used in areas of grain crops in tropical and subtropical regions. However, crops fields under NT with low phytomass addition and without runoff control practices are highly susceptible to degradation, resulting in low infiltration rates and consequently high runoff volumes. In addition to water and sediment loss, runoff will determine the transfer of dissolved and particulate chemical elements as nutrients. These could represent an increase in the cost of production and an impact on water resources. The objective of this study was to evaluate the effect of the amount of phytomass, scarification and terracing on the loss of nutrients (NH4 + , NO3 - + NO2 - , N total, P, K, Ca e Mg) associated with runoff, suspended sediments and its determination at deposits. The study was carried out in a representative area of grain production under no tillage in the central region of Rio Grande do Sul. The hydrological monitoring of surface runoff and sediment yield monitoring were conducted for five years in two zero-order basins (~2.4 ha) and four macroplots (~0.6 ha) during natural rainfall events. The dataset includes 18 events in the catchments and 9 events in the macroplots. In the catchments the effect of terracing was tested and in the macroplots the effects of scarification and phytomass amount were tested. The results show that there is a wide variation in nutrient concentrations in both surface runoff and eroded sediments regardless of the land management tested. Nevertheless, it is clearly noted that the main mechanism of nutrient loss is controlled by surface runoff in its dissolved fraction during high magnitude events. The effects of the higher phytomass addition and, especially, the presence of the terraces affect the nutrient losses by the greater control of the surface runoff. The nutrient losses monitored indicate the high risk of contamination of surface waters by eutrophication, increased costs of water treatment for supply and the potential for water contamination with impacts on the health of the population. |
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2023-03-20T18:41:28Z2023-03-20T18:41:28Z2022-01-31http://repositorio.ufsm.br/handle/1/28295No-tillage (NT) is widely used in areas of grain crops in tropical and subtropical regions. However, crops fields under NT with low phytomass addition and without runoff control practices are highly susceptible to degradation, resulting in low infiltration rates and consequently high runoff volumes. In addition to water and sediment loss, runoff will determine the transfer of dissolved and particulate chemical elements as nutrients. These could represent an increase in the cost of production and an impact on water resources. The objective of this study was to evaluate the effect of the amount of phytomass, scarification and terracing on the loss of nutrients (NH4 + , NO3 - + NO2 - , N total, P, K, Ca e Mg) associated with runoff, suspended sediments and its determination at deposits. The study was carried out in a representative area of grain production under no tillage in the central region of Rio Grande do Sul. The hydrological monitoring of surface runoff and sediment yield monitoring were conducted for five years in two zero-order basins (~2.4 ha) and four macroplots (~0.6 ha) during natural rainfall events. The dataset includes 18 events in the catchments and 9 events in the macroplots. In the catchments the effect of terracing was tested and in the macroplots the effects of scarification and phytomass amount were tested. The results show that there is a wide variation in nutrient concentrations in both surface runoff and eroded sediments regardless of the land management tested. Nevertheless, it is clearly noted that the main mechanism of nutrient loss is controlled by surface runoff in its dissolved fraction during high magnitude events. The effects of the higher phytomass addition and, especially, the presence of the terraces affect the nutrient losses by the greater control of the surface runoff. The nutrient losses monitored indicate the high risk of contamination of surface waters by eutrophication, increased costs of water treatment for supply and the potential for water contamination with impacts on the health of the population.No Brasil, o plantio direto (PD) é amplamente utilizado na produção de grãos, porém lavouras conduzidas sob PD com baixa adição de fitomassa e sem práticas de controle de escoamento são susceptíveis à degradação, resultando em alto volume de escoamento superficial. Além da perda de água e de solo por erosão, o escoamento transportará elementos químicos como carbono e nutrientes dissolvidos e particulados. Isso representa um aumento de custo de produção e impacto aos recursos hídricos. O objetivo deste estudo foi avaliar o efeito da quantidade de fitomassa, escarificação e terraceamento na perda de nutrientes (NH4 + , NO3 - + NO2 - , N total, P, K, Ca e Mg) associados ao escoamento superficial, sedimentos em suspensão e a determinação de sua presença em depósitos. O estudo foi realizado em área representativa da produção de grãos sob plantio direto na região central do Rio Grande do Sul. O monitoramento hidrológico envolvendo o escoamento superficial e a produção de sedimentos foi realizado de 2014 a 2018, em duas bacias de ordem zero (~2,4 ha) e quatro macroparcelas (~0,6 ha) localizadas na durante eventos de chuva natural. O conjunto de dados inclui 18 eventos nas bacias de ordem zero e 9 eventos nas macroparcelas. Nas bacias foi testado o efeito do terraceamento e nas macroparcelas foram testados os efeitos da escarificação e da quantidade de fitomassa. Os resultados demonstram que há uma ampla variação nas concentrações dos nutrientes no escoamento superficial ou nos sedimentos erodidos independente dos manejos testados. Apesar disso, nota-se claramente que o principal mecanismo de perda de nutrientes é controlado pelo escoamento superficial na sua fração dissolvida durante os eventos de grande magnitude. Os efeitos da maior adição de fitomassa e, especialmente, a presença dos terraços afetam as perdas de nutrientes pelo maior controle do escoamento superficial. As perdas de nutrientes monitoradas indicam o elevado risco de contaminação de águas superficiais pela eutrofização, aumento dos custos de tratamento da água para abastecimento e potencial de contaminação da água com impactos à saúde da população.porUniversidade Federal de Santa MariaCentro de Ciências RuraisPrograma de Pós-Graduação em Ciência do SoloUFSMBrasilAgronomiaAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessConservação do soloPerda de nutrientesBacia hidrográficaFósforoNitrogênioSoil conservationNutrient lossesCatchmentPhosphorusNitrogenCNPQ::CIENCIAS AGRARIAS::AGRONOMIA::CIENCIA DO SOLOPerdas de nutrientes associadas ao escoamento e aos sedimentos erodidos em encostas sob plantio diretoNutrient losses associated with runoff and eroded sediments on hillslopes under no-tillageinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisMinella, Jean Paolo Gomeshttp://lattes.cnpq.br/3194231720402587Kaiser, Douglas RodrigoBarros, Cláudia Alessandra Peixoto dehttp://lattes.cnpq.br/6414147641966720Utzig, Douglas Luis5001001000056006006006006000be3342c-3c6d-4254-86a4-ae1d23338ab74d35bec2-3f2c-45ef-ade4-b0366124ac097ac6ca53-8812-4105-bb8f-d5072721834c686ed9a7-ef86-43e8-a999-909286934da1reponame:Biblioteca Digital de Teses e Dissertações do UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALDIS_PPGCS_2022_UTZIG_DOUGLAS.pdfDIS_PPGCS_2022_UTZIG_DOUGLAS.pdfDissertação de mestradoapplication/pdf1365822http://repositorio.ufsm.br/bitstream/1/28295/1/DIS_PPGCS_2022_UTZIG_DOUGLAS.pdfc8566c50213d0ba3c7ae81a1e36f0b7cMD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8805http://repositorio.ufsm.br/bitstream/1/28295/2/license_rdf4460e5956bc1d1639be9ae6146a50347MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-81956http://repositorio.ufsm.br/bitstream/1/28295/3/license.txt2f0571ecee68693bd5cd3f17c1e075dfMD531/282952023-03-20 15:41:28.729oai:repositorio.ufsm.br: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 Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2023-03-20T18:41:28Biblioteca Digital de Teses e Dissertações do UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.por.fl_str_mv |
Perdas de nutrientes associadas ao escoamento e aos sedimentos erodidos em encostas sob plantio direto |
dc.title.alternative.eng.fl_str_mv |
Nutrient losses associated with runoff and eroded sediments on hillslopes under no-tillage |
title |
Perdas de nutrientes associadas ao escoamento e aos sedimentos erodidos em encostas sob plantio direto |
spellingShingle |
Perdas de nutrientes associadas ao escoamento e aos sedimentos erodidos em encostas sob plantio direto Utzig, Douglas Luis Conservação do solo Perda de nutrientes Bacia hidrográfica Fósforo Nitrogênio Soil conservation Nutrient losses Catchment Phosphorus Nitrogen CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::CIENCIA DO SOLO |
title_short |
Perdas de nutrientes associadas ao escoamento e aos sedimentos erodidos em encostas sob plantio direto |
title_full |
Perdas de nutrientes associadas ao escoamento e aos sedimentos erodidos em encostas sob plantio direto |
title_fullStr |
Perdas de nutrientes associadas ao escoamento e aos sedimentos erodidos em encostas sob plantio direto |
title_full_unstemmed |
Perdas de nutrientes associadas ao escoamento e aos sedimentos erodidos em encostas sob plantio direto |
title_sort |
Perdas de nutrientes associadas ao escoamento e aos sedimentos erodidos em encostas sob plantio direto |
author |
Utzig, Douglas Luis |
author_facet |
Utzig, Douglas Luis |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Minella, Jean Paolo Gomes |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/3194231720402587 |
dc.contributor.referee1.fl_str_mv |
Kaiser, Douglas Rodrigo |
dc.contributor.referee3.fl_str_mv |
Barros, Cláudia Alessandra Peixoto de |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/6414147641966720 |
dc.contributor.author.fl_str_mv |
Utzig, Douglas Luis |
contributor_str_mv |
Minella, Jean Paolo Gomes Kaiser, Douglas Rodrigo Barros, Cláudia Alessandra Peixoto de |
dc.subject.por.fl_str_mv |
Conservação do solo Perda de nutrientes Bacia hidrográfica Fósforo Nitrogênio |
topic |
Conservação do solo Perda de nutrientes Bacia hidrográfica Fósforo Nitrogênio Soil conservation Nutrient losses Catchment Phosphorus Nitrogen CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::CIENCIA DO SOLO |
dc.subject.eng.fl_str_mv |
Soil conservation Nutrient losses Catchment Phosphorus Nitrogen |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::CIENCIA DO SOLO |
description |
No-tillage (NT) is widely used in areas of grain crops in tropical and subtropical regions. However, crops fields under NT with low phytomass addition and without runoff control practices are highly susceptible to degradation, resulting in low infiltration rates and consequently high runoff volumes. In addition to water and sediment loss, runoff will determine the transfer of dissolved and particulate chemical elements as nutrients. These could represent an increase in the cost of production and an impact on water resources. The objective of this study was to evaluate the effect of the amount of phytomass, scarification and terracing on the loss of nutrients (NH4 + , NO3 - + NO2 - , N total, P, K, Ca e Mg) associated with runoff, suspended sediments and its determination at deposits. The study was carried out in a representative area of grain production under no tillage in the central region of Rio Grande do Sul. The hydrological monitoring of surface runoff and sediment yield monitoring were conducted for five years in two zero-order basins (~2.4 ha) and four macroplots (~0.6 ha) during natural rainfall events. The dataset includes 18 events in the catchments and 9 events in the macroplots. In the catchments the effect of terracing was tested and in the macroplots the effects of scarification and phytomass amount were tested. The results show that there is a wide variation in nutrient concentrations in both surface runoff and eroded sediments regardless of the land management tested. Nevertheless, it is clearly noted that the main mechanism of nutrient loss is controlled by surface runoff in its dissolved fraction during high magnitude events. The effects of the higher phytomass addition and, especially, the presence of the terraces affect the nutrient losses by the greater control of the surface runoff. The nutrient losses monitored indicate the high risk of contamination of surface waters by eutrophication, increased costs of water treatment for supply and the potential for water contamination with impacts on the health of the population. |
publishDate |
2022 |
dc.date.issued.fl_str_mv |
2022-01-31 |
dc.date.accessioned.fl_str_mv |
2023-03-20T18:41:28Z |
dc.date.available.fl_str_mv |
2023-03-20T18:41:28Z |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/masterThesis |
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masterThesis |
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publishedVersion |
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http://repositorio.ufsm.br/handle/1/28295 |
url |
http://repositorio.ufsm.br/handle/1/28295 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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500100100005 |
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Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
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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 Ciência do Solo |
dc.publisher.initials.fl_str_mv |
UFSM |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Agronomia |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências Rurais |
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