Emissão de gases de efeito estufa na cultura da cana-de-açúcar sob diferentes sistemas de preparo do solo e doses de nitrogênio
Ano de defesa: | 2012 |
---|---|
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
|
Programa de Pós-Graduação: |
Programa de Pós-Graduação em Ciência do Solo
|
Departamento: |
Agronomia
|
País: |
BR
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://repositorio.ufsm.br/handle/1/5563 |
Resumo: | Brazil is the world's largest producer of sugarcane. However, few studies have been conducted to evaluate the effect soil management systems and fertilization practices on emissions of greenhouse gases (GHG). Therefore, the present study was aimed to assess the GHG emissions during the life cycle of sugarcane under different soil management systems and nitrogen (N) fertilization. The study was comprised of two experiments. In the first experiment, four tillage systems (conventional tillage - CT; chisel plough - CP, No tillage - NT, and compacted No tillage - CNT) while in the second experiment different doses of N (0, 40, 80 and 120 kg N ha-1) were evaluated for their effect on GHG and productivity. GHG emissions were assesses on different dates and soil samples were also taken to measure the levels of mineral N and soil moisture. The global warming potential (GWP) in each management system was calculated by using initial and final C content of the soils plus the emissions of N2O and CH4 during the experiments. The sugarcane yield and CH4 emission (mean -1.25 kg CH4-C ha-1) were not affected by different tillage systems. The cumulative amount of CO2 varied in the following order: CT> NT> CP> CNT. In the CNT, greater flows of N2O after rainfall events was occurred which were approximately two times greater than the CT and CP (517 vs 254 μg m-2h-1) and 7.5 times higher than in NT. The CT tillage system showed higher value of GWP, followed by the CP and CNT indicating that the use of conservation tillage is a strategy with the potential to mitigate GHG emissions from sugarcane crop in southern Brazil. The N2O emission increased linearly with the doses of N applied. On an average, 0.28 kg N2O-N ha-1 was emitted from 20 kg N ha-1. The values of N2O emission factors were calculated based on IPCC methodology for the conditions of this study indicate that for doses less than 40 kg N ha-1 values obtained are below the default value of 1.25%. For doses above 60 kg N ha-1 values obtained are similar to the factors indicated by the IPCC. Emission factors based on the relationship between the N2O emission and productivity indicated that productivity was increased with doses above 40-60 kg N ha-1 with high amount of N2O emission per Mg produced. |
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2017-04-112017-04-112012-12-14MORO, Vagner João. Greenhouse gases emissions from sugarcane crop under different soil management systems and nitrogen doses. 2012. 65 f. Dissertação (Mestrado em Agronomia) - Universidade Federal de Santa Maria, Santa Maria, 2012.http://repositorio.ufsm.br/handle/1/5563Brazil is the world's largest producer of sugarcane. However, few studies have been conducted to evaluate the effect soil management systems and fertilization practices on emissions of greenhouse gases (GHG). Therefore, the present study was aimed to assess the GHG emissions during the life cycle of sugarcane under different soil management systems and nitrogen (N) fertilization. The study was comprised of two experiments. In the first experiment, four tillage systems (conventional tillage - CT; chisel plough - CP, No tillage - NT, and compacted No tillage - CNT) while in the second experiment different doses of N (0, 40, 80 and 120 kg N ha-1) were evaluated for their effect on GHG and productivity. GHG emissions were assesses on different dates and soil samples were also taken to measure the levels of mineral N and soil moisture. The global warming potential (GWP) in each management system was calculated by using initial and final C content of the soils plus the emissions of N2O and CH4 during the experiments. The sugarcane yield and CH4 emission (mean -1.25 kg CH4-C ha-1) were not affected by different tillage systems. The cumulative amount of CO2 varied in the following order: CT> NT> CP> CNT. In the CNT, greater flows of N2O after rainfall events was occurred which were approximately two times greater than the CT and CP (517 vs 254 μg m-2h-1) and 7.5 times higher than in NT. The CT tillage system showed higher value of GWP, followed by the CP and CNT indicating that the use of conservation tillage is a strategy with the potential to mitigate GHG emissions from sugarcane crop in southern Brazil. The N2O emission increased linearly with the doses of N applied. On an average, 0.28 kg N2O-N ha-1 was emitted from 20 kg N ha-1. The values of N2O emission factors were calculated based on IPCC methodology for the conditions of this study indicate that for doses less than 40 kg N ha-1 values obtained are below the default value of 1.25%. For doses above 60 kg N ha-1 values obtained are similar to the factors indicated by the IPCC. Emission factors based on the relationship between the N2O emission and productivity indicated that productivity was increased with doses above 40-60 kg N ha-1 with high amount of N2O emission per Mg produced.O Brasil é o maior produtor mundial de cana-de-açúcar. No entanto, poucos estudos têm sido realizado para avaliar o efeito de sistemas de preparo e manejo da adubação nitrogenada na cultura da cana-de-açúcar sobre as emissões de gases de efeito estufa (GEE). Com o objetivo de avaliar a emissão de GEE duarante o ciclo da cana-de-açúcar foram realizados dois experimentos, o primeiro constituido por quatro sistemas de preparo do solo (solo em preparo convencional - PC; solo escarificado - ESC; solo em plantio direto - PD; e solo em plantio direto compactado - PDC) e o segundo por quatro doses de N aplicadas (0, 40, 80 e 120 kg N ha-1). Nos dois experimentos foram avaliadas a produtividade de colmos e as emissões de dióxido de carbono (CO2), metano (CH4) e óxido nitroso (N2O). Em diferentes datas de avaliação dos GEE foram realizadas coletas de solo para quantificar os teores de N mineral e umidade do solo. Com base nos dados de C no solo no início e ao final do experimento e das emissões de N2O e CH4 foi calculado o poder de aquecimento global (PAG) em cada sistema de preparo. A produtividade de colmos e a emissão de CH4 (média de -1,25 kg C-CH4 ha-1) não foram afetadas pelos diferentes sistemas de preparo do solo. A quantidade acumulada de CO2 variou na seguinte ordem: PC> PD > ESC> PDC. Quando o solo na entrelinha da cultura foi mantido em PD ocorreram os menores fluxos de N2O. No PDC a média dos maiores fluxos de N2O após os eventos pluviométricos foi aproximadamenmte 2 vezes maior do que no PC e ESC (517 vs 254 μg m-2h-1) e 7,5 vezes maior do que no PD. O sistema de preparo do solo PC apresentou maior valor de PAG, seguido pelo ESC e PDC indicando que o uso de plantio direto é uma estratégia com potencial para mitigar as emissões de GEE na implantação de lavouras de cana-de-açúcar na região sul do Brasil. A emissão de N2O aumentou linearmente com as doses de N aplicadas na cultura. Na média dos ciclos de cana planta e soca para cada 20 kg N ha-1 aplicados, são emitidos 0,28 kg N-N2O ha-1. Os valores dos fatores de emissão de N2O calculados com base na metodologia do IPCC para as condições do presente estudo indicam que para doses menores que 40 kg N ha-1 os valores obtidos estão abaixo do valor padrão de 1,25%. Para doses acima de 60 kg N ha-1 os valores dos fatores obtidos são semelhantes ao indicado pelo IPCC. Fatores de emissão baseados na relação entre a emissão de N2O e a produtividade de colmos, indicam que incrementos de produtividades de colmos obtidas com doses acima de 40-60 kg N ha-1 irão apresentar elevada quantidade de N2O emitida por Mg de colmo produzida.Conselho Nacional de Desenvolvimento Científico e Tecnológicoapplication/pdfporUniversidade Federal de Santa MariaPrograma de Pós-Graduação em Ciência do SoloUFSMBRAgronomiaGEESistemas de preparo do soloFertilizantes nitrogenadosCana-de-açúcarGHGTillage systemsNitrogen dosesSugarcanesCNPQ::CIENCIAS AGRARIAS::AGRONOMIA::CIENCIA DO SOLOEmissão de gases de efeito estufa na cultura da cana-de-açúcar sob diferentes sistemas de preparo do solo e doses de nitrogênioGreenhouse gases emissions from sugarcane crop under different soil management systems and nitrogen dosesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisGiacomini, Sandro Joséhttp://lattes.cnpq.br/1112466940331009Aita, Celsohttp://lattes.cnpq.br/7391004032643110Vieira, Frederico Costa Beberhttp://lattes.cnpq.br/4002044761102234http://lattes.cnpq.br/2789331268293106Moro, Vagner João500100100005400500300500500419b5a2f-20df-408a-a156-d652293f4a73e4f60af4-96e9-4565-801f-1c8267ef4bacb46e65b9-e307-4c06-a922-2942f17e7dc5e6bc6e74-eb71-4c80-86f1-2730c175b3bbinfo:eu-repo/semantics/openAccessreponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALMORO, VAGNER JOAO.pdfapplication/pdf937540http://repositorio.ufsm.br/bitstream/1/5563/1/MORO%2c%20VAGNER%20JOAO.pdf7f24f69e875257580d9673dd91552d84MD51TEXTMORO, VAGNER JOAO.pdf.txtMORO, VAGNER JOAO.pdf.txtExtracted texttext/plain137394http://repositorio.ufsm.br/bitstream/1/5563/2/MORO%2c%20VAGNER%20JOAO.pdf.txtb1db21d8ba04554adc6ed5da4d490acaMD52THUMBNAILMORO, VAGNER JOAO.pdf.jpgMORO, VAGNER JOAO.pdf.jpgIM Thumbnailimage/jpeg4834http://repositorio.ufsm.br/bitstream/1/5563/3/MORO%2c%20VAGNER%20JOAO.pdf.jpg29ce3001d8d222ccc84c7fa1f400cb62MD531/55632023-06-14 10:35:43.623oai:repositorio.ufsm.br:1/5563Repositório Institucionalhttp://repositorio.ufsm.br/PUBhttp://repositorio.ufsm.br/oai/requestopendoar:39132023-06-14T13:35:43Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.por.fl_str_mv |
Emissão de gases de efeito estufa na cultura da cana-de-açúcar sob diferentes sistemas de preparo do solo e doses de nitrogênio |
dc.title.alternative.eng.fl_str_mv |
Greenhouse gases emissions from sugarcane crop under different soil management systems and nitrogen doses |
title |
Emissão de gases de efeito estufa na cultura da cana-de-açúcar sob diferentes sistemas de preparo do solo e doses de nitrogênio |
spellingShingle |
Emissão de gases de efeito estufa na cultura da cana-de-açúcar sob diferentes sistemas de preparo do solo e doses de nitrogênio Moro, Vagner João GEE Sistemas de preparo do solo Fertilizantes nitrogenados Cana-de-açúcar GHG Tillage systems Nitrogen doses Sugarcanes CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::CIENCIA DO SOLO |
title_short |
Emissão de gases de efeito estufa na cultura da cana-de-açúcar sob diferentes sistemas de preparo do solo e doses de nitrogênio |
title_full |
Emissão de gases de efeito estufa na cultura da cana-de-açúcar sob diferentes sistemas de preparo do solo e doses de nitrogênio |
title_fullStr |
Emissão de gases de efeito estufa na cultura da cana-de-açúcar sob diferentes sistemas de preparo do solo e doses de nitrogênio |
title_full_unstemmed |
Emissão de gases de efeito estufa na cultura da cana-de-açúcar sob diferentes sistemas de preparo do solo e doses de nitrogênio |
title_sort |
Emissão de gases de efeito estufa na cultura da cana-de-açúcar sob diferentes sistemas de preparo do solo e doses de nitrogênio |
author |
Moro, Vagner João |
author_facet |
Moro, Vagner João |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Giacomini, Sandro José |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/1112466940331009 |
dc.contributor.referee1.fl_str_mv |
Aita, Celso |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/7391004032643110 |
dc.contributor.referee2.fl_str_mv |
Vieira, Frederico Costa Beber |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/4002044761102234 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/2789331268293106 |
dc.contributor.author.fl_str_mv |
Moro, Vagner João |
contributor_str_mv |
Giacomini, Sandro José Aita, Celso Vieira, Frederico Costa Beber |
dc.subject.por.fl_str_mv |
GEE Sistemas de preparo do solo Fertilizantes nitrogenados Cana-de-açúcar |
topic |
GEE Sistemas de preparo do solo Fertilizantes nitrogenados Cana-de-açúcar GHG Tillage systems Nitrogen doses Sugarcanes CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::CIENCIA DO SOLO |
dc.subject.eng.fl_str_mv |
GHG Tillage systems Nitrogen doses Sugarcanes |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::CIENCIA DO SOLO |
description |
Brazil is the world's largest producer of sugarcane. However, few studies have been conducted to evaluate the effect soil management systems and fertilization practices on emissions of greenhouse gases (GHG). Therefore, the present study was aimed to assess the GHG emissions during the life cycle of sugarcane under different soil management systems and nitrogen (N) fertilization. The study was comprised of two experiments. In the first experiment, four tillage systems (conventional tillage - CT; chisel plough - CP, No tillage - NT, and compacted No tillage - CNT) while in the second experiment different doses of N (0, 40, 80 and 120 kg N ha-1) were evaluated for their effect on GHG and productivity. GHG emissions were assesses on different dates and soil samples were also taken to measure the levels of mineral N and soil moisture. The global warming potential (GWP) in each management system was calculated by using initial and final C content of the soils plus the emissions of N2O and CH4 during the experiments. The sugarcane yield and CH4 emission (mean -1.25 kg CH4-C ha-1) were not affected by different tillage systems. The cumulative amount of CO2 varied in the following order: CT> NT> CP> CNT. In the CNT, greater flows of N2O after rainfall events was occurred which were approximately two times greater than the CT and CP (517 vs 254 μg m-2h-1) and 7.5 times higher than in NT. The CT tillage system showed higher value of GWP, followed by the CP and CNT indicating that the use of conservation tillage is a strategy with the potential to mitigate GHG emissions from sugarcane crop in southern Brazil. The N2O emission increased linearly with the doses of N applied. On an average, 0.28 kg N2O-N ha-1 was emitted from 20 kg N ha-1. The values of N2O emission factors were calculated based on IPCC methodology for the conditions of this study indicate that for doses less than 40 kg N ha-1 values obtained are below the default value of 1.25%. For doses above 60 kg N ha-1 values obtained are similar to the factors indicated by the IPCC. Emission factors based on the relationship between the N2O emission and productivity indicated that productivity was increased with doses above 40-60 kg N ha-1 with high amount of N2O emission per Mg produced. |
publishDate |
2012 |
dc.date.issued.fl_str_mv |
2012-12-14 |
dc.date.accessioned.fl_str_mv |
2017-04-11 |
dc.date.available.fl_str_mv |
2017-04-11 |
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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 |
dc.identifier.citation.fl_str_mv |
MORO, Vagner João. Greenhouse gases emissions from sugarcane crop under different soil management systems and nitrogen doses. 2012. 65 f. Dissertação (Mestrado em Agronomia) - Universidade Federal de Santa Maria, Santa Maria, 2012. |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/5563 |
identifier_str_mv |
MORO, Vagner João. Greenhouse gases emissions from sugarcane crop under different soil management systems and nitrogen doses. 2012. 65 f. Dissertação (Mestrado em Agronomia) - Universidade Federal de Santa Maria, Santa Maria, 2012. |
url |
http://repositorio.ufsm.br/handle/1/5563 |
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UFSM |
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