Efeito da adi??o de NBPT, ze?lita e ?cido h?mico na atividade da urease
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da UFRRJ |
Texto Completo: | https://tede.ufrrj.br/jspui/handle/jspui/2588 |
Resumo: | Among the nitrogen fertilizers, urea stands out due to its advantages such as high N, low cost per unit of nutrient and compatibility with other products for agricultural use, but the ease of nitrogen losses applied via urea reduce fertilizer efficiency and compromise the sustainability of agricultural enterprises opting for nitrogen fertilization via urea. The urease enzyme is responsible for catalyzing the hydrolysis of urea into ammonia and carbon dioxide, where the ammonia can be lost by volatilization, which is the main cause of loss of nitrogen applied to the soil. Several studies evaluating ways to reduce these losses through plant breeding or inhibiting the urease enzyme. The objective of this study was to evaluate the influence of the addition of NBPT, humic acid and zeolite, in increasing concentrations in the enzyme urease activity. The study was conducted in the laboratory in the Department of Soil Science of UFRRJ, they were used 15 fertilizer urea-based, five of them with NBPT, three with zeolite, three with humic acid, three with humic acid over zeolite and urea pure. The enzymatic activity was determined by the methods proposed by May & Douglas (1976) and Witte & Medina-Escobar (2001). Both methods determine the enzymatic activity through the formation of NH3, but differ in the enzyme source and determining the form of ammonia. Both methods confirmed the efficiency of NBPT to inhibit urease activity even in the shortest incubation period and the lowest concentration being the most effective among the tested compounds. NBPT different concentrations did not result in differences in the enzyme urease activity. The results obtained by the method proposed by May & Douglas (1976) show that humic acids reduced enzymatic activity after 36 hours incubation. The zeolite has no influence on the activity of urease, when analyzed by the method of May & Douglas (1976). |
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Zonta, EveraldoTeixeira, Paulo C?sarStafanato, Juliano Bahiensehttp://lattes.cnpq.br/3311623371560573Gomes, Mateus de Paula2019-02-06T17:58:06Z2015-07-28GOMES, Mateus de Paula. Efeito da adi??o de NBPT, ze?lita e ?cido h?mico na atividade da urease. 2015. 53 f. Disserta??o (Mestrado em Agronomia, Ci?ncia do Solo) - Instituto de Agronomia, Departamento de Solos, Universidade Federal Rural do Rio de Janeiro, Serop?dica - RJ, 2015.https://tede.ufrrj.br/jspui/handle/jspui/2588Among the nitrogen fertilizers, urea stands out due to its advantages such as high N, low cost per unit of nutrient and compatibility with other products for agricultural use, but the ease of nitrogen losses applied via urea reduce fertilizer efficiency and compromise the sustainability of agricultural enterprises opting for nitrogen fertilization via urea. The urease enzyme is responsible for catalyzing the hydrolysis of urea into ammonia and carbon dioxide, where the ammonia can be lost by volatilization, which is the main cause of loss of nitrogen applied to the soil. Several studies evaluating ways to reduce these losses through plant breeding or inhibiting the urease enzyme. The objective of this study was to evaluate the influence of the addition of NBPT, humic acid and zeolite, in increasing concentrations in the enzyme urease activity. The study was conducted in the laboratory in the Department of Soil Science of UFRRJ, they were used 15 fertilizer urea-based, five of them with NBPT, three with zeolite, three with humic acid, three with humic acid over zeolite and urea pure. The enzymatic activity was determined by the methods proposed by May & Douglas (1976) and Witte & Medina-Escobar (2001). Both methods determine the enzymatic activity through the formation of NH3, but differ in the enzyme source and determining the form of ammonia. Both methods confirmed the efficiency of NBPT to inhibit urease activity even in the shortest incubation period and the lowest concentration being the most effective among the tested compounds. NBPT different concentrations did not result in differences in the enzyme urease activity. The results obtained by the method proposed by May & Douglas (1976) show that humic acids reduced enzymatic activity after 36 hours incubation. The zeolite has no influence on the activity of urease, when analyzed by the method of May & Douglas (1976).Dentre os fertilizantes nitrogenados, a ureia se destaca devido as suas vantagens como alto teor de N, baixo custo por unidade do nutriente e compatibilidade com outros produtos de uso agr?cola, por?m a facilidade de perdas do nitrog?nio aplicado via ureia reduzem a efici?ncia do fertilizante e comprometem a sustentabilidade dos empreendimentos agr?colas que optam pela fertiliza??o nitrogenada via ureia. A enzima urease ? respons?vel por catalisar a hidr?lise da ureia em am?nia e di?xido de carbono, onde a am?nia pode ser perdida por volatiliza??o, sendo essa a principal causa das perdas do nitrog?nio aplicado ao solo. Diversos estudos avaliam formas de reduzir essas perdas, atrav?s de t?cnicas de cultivo ou inibi??o da enzima urease. Objetivou-se com este estudo, avaliar a influ?ncia da adi??o de NBPT, ?cido h?mico e ze?lita, em concentra??es crescentes, na atividade da enzima urease. O estudo foi conduzido em laborat?rio, no Departamento de Solos da UFRRJ, em que foram utilizados 15 fertilizantes a base de ureia, sendo cinco deles com NBPT, tr?s com ze?lita, tr?s com ?cido h?mico, tr?s com ?cido h?mico mais ze?lita e um de ureia pura. A atividade enzim?tica foi determinada atrav?s dos m?todos propostos por May & Douglas (1976) e Witte & MedinaEscobar (2001). Ambos os m?todos determinam a atividade enzim?tica atrav?s da forma??o de NH3, por?m diferem quanto ? fonte enzim?tica e forma de determinar a am?nia. Os dois m?todos confirmam a efici?ncia do NBPT em inibir a atividade da urease, mesmo no menor per?odo de incuba??o e na menor concentra??o, sendo o mais eficiente, dentre os compostos testados. As diferentes concentra??es do NBPT n?o resultaram em diferen?a na atividade da enzima urease. Os resultados obtidos por meio do m?todo proposto por May & Douglas (1976) mostram que o ?cido h?mico reduziu a atividade enzim?tica ap?s 36 horas de incuba??o. A ze?lita n?o exerce influ?ncia na atividade da urease, quando analisada pelo m?todo de May & Douglas (1976).Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2019-02-06T17:58:06Z No. of bitstreams: 1 2015 - Mateus de Paula Gomes.pdf: 343373 bytes, checksum: 769257df8e0a371b49f0e8e07ed240a5 (MD5)Made available in DSpace on 2019-02-06T17:58:06Z (GMT). No. of bitstreams: 1 2015 - Mateus de Paula Gomes.pdf: 343373 bytes, checksum: 769257df8e0a371b49f0e8e07ed240a5 (MD5) Previous issue date: 2015-07-28CNPqapplication/pdfhttps://tede.ufrrj.br/retrieve/9276/2015%20-%20Mateus%20de%20Paula%20Gomes.pdf.jpghttps://tede.ufrrj.br/retrieve/15670/2015%20-%20Mateus%20de%20Paula%20Gomes.pdf.jpghttps://tede.ufrrj.br/retrieve/21972/2015%20-%20Mateus%20de%20Paula%20Gomes.pdf.jpghttps://tede.ufrrj.br/retrieve/28354/2015%20-%20Mateus%20de%20Paula%20Gomes.pdf.jpghttps://tede.ufrrj.br/retrieve/34768/2015%20-%20Mateus%20de%20Paula%20Gomes.pdf.jpghttps://tede.ufrrj.br/retrieve/41164/2015%20-%20Mateus%20de%20Paula%20Gomes.pdf.jpghttps://tede.ufrrj.br/retrieve/47566/2015%20-%20Mateus%20de%20Paula%20Gomes.pdf.jpghttps://tede.ufrrj.br/retrieve/54004/2015%20-%20Mateus%20de%20Paula%20Gomes.pdf.jpgporUniversidade Federal Rural do Rio de JaneiroPrograma de P?s-Gradua??o em Agronomia - Ci?ncia do SoloUFRRJBrasilInstituto de AgronomiaVolatiliza??o de am?niaHidr?lise da ureiaPerdas de nitrog?nioAmmonia volatilizationhydrolysis of ureanitrogen lossesAgronomiaEfeito da adi??o de NBPT, ze?lita e ?cido h?mico na atividade da ureaseThe influence of NBPT, zeolite and humic acid on urease activityinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da UFRRJinstname:Universidade Federal Rural do Rio de Janeiro (UFRRJ)instacron:UFRRJTHUMBNAIL2015 - Mateus de Paula Gomes.pdf.jpg2015 - Mateus de Paula Gomes.pdf.jpgimage/jpeg3758http://localhost:8080/tede/bitstream/jspui/2588/18/2015+-+Mateus+de+Paula+Gomes.pdf.jpgb7c3df601a2f347ef73d2b82e0585b97MD518TEXT2015 - Mateus de Paula Gomes.pdf.txt2015 - Mateus de Paula Gomes.pdf.txttext/plain83423http://localhost:8080/tede/bitstream/jspui/2588/17/2015+-+Mateus+de+Paula+Gomes.pdf.txt497667457bb367b4a3a10300bed13c1fMD517ORIGINAL2015 - Mateus de Paula Gomes.pdf2015 - Mateus de Paula Gomes.pdfapplication/pdf343373http://localhost:8080/tede/bitstream/jspui/2588/2/2015+-+Mateus+de+Paula+Gomes.pdf769257df8e0a371b49f0e8e07ed240a5MD52LICENSElicense.txtlicense.txttext/plain; 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dc.title.por.fl_str_mv |
Efeito da adi??o de NBPT, ze?lita e ?cido h?mico na atividade da urease |
dc.title.alternative.eng.fl_str_mv |
The influence of NBPT, zeolite and humic acid on urease activity |
title |
Efeito da adi??o de NBPT, ze?lita e ?cido h?mico na atividade da urease |
spellingShingle |
Efeito da adi??o de NBPT, ze?lita e ?cido h?mico na atividade da urease Gomes, Mateus de Paula Volatiliza??o de am?nia Hidr?lise da ureia Perdas de nitrog?nio Ammonia volatilization hydrolysis of urea nitrogen losses Agronomia |
title_short |
Efeito da adi??o de NBPT, ze?lita e ?cido h?mico na atividade da urease |
title_full |
Efeito da adi??o de NBPT, ze?lita e ?cido h?mico na atividade da urease |
title_fullStr |
Efeito da adi??o de NBPT, ze?lita e ?cido h?mico na atividade da urease |
title_full_unstemmed |
Efeito da adi??o de NBPT, ze?lita e ?cido h?mico na atividade da urease |
title_sort |
Efeito da adi??o de NBPT, ze?lita e ?cido h?mico na atividade da urease |
author |
Gomes, Mateus de Paula |
author_facet |
Gomes, Mateus de Paula |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Zonta, Everaldo |
dc.contributor.referee1.fl_str_mv |
Teixeira, Paulo C?sar |
dc.contributor.referee2.fl_str_mv |
Stafanato, Juliano Bahiense |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/3311623371560573 |
dc.contributor.author.fl_str_mv |
Gomes, Mateus de Paula |
contributor_str_mv |
Zonta, Everaldo Teixeira, Paulo C?sar Stafanato, Juliano Bahiense |
dc.subject.por.fl_str_mv |
Volatiliza??o de am?nia Hidr?lise da ureia Perdas de nitrog?nio |
topic |
Volatiliza??o de am?nia Hidr?lise da ureia Perdas de nitrog?nio Ammonia volatilization hydrolysis of urea nitrogen losses Agronomia |
dc.subject.eng.fl_str_mv |
Ammonia volatilization hydrolysis of urea nitrogen losses |
dc.subject.cnpq.fl_str_mv |
Agronomia |
description |
Among the nitrogen fertilizers, urea stands out due to its advantages such as high N, low cost per unit of nutrient and compatibility with other products for agricultural use, but the ease of nitrogen losses applied via urea reduce fertilizer efficiency and compromise the sustainability of agricultural enterprises opting for nitrogen fertilization via urea. The urease enzyme is responsible for catalyzing the hydrolysis of urea into ammonia and carbon dioxide, where the ammonia can be lost by volatilization, which is the main cause of loss of nitrogen applied to the soil. Several studies evaluating ways to reduce these losses through plant breeding or inhibiting the urease enzyme. The objective of this study was to evaluate the influence of the addition of NBPT, humic acid and zeolite, in increasing concentrations in the enzyme urease activity. The study was conducted in the laboratory in the Department of Soil Science of UFRRJ, they were used 15 fertilizer urea-based, five of them with NBPT, three with zeolite, three with humic acid, three with humic acid over zeolite and urea pure. The enzymatic activity was determined by the methods proposed by May & Douglas (1976) and Witte & Medina-Escobar (2001). Both methods determine the enzymatic activity through the formation of NH3, but differ in the enzyme source and determining the form of ammonia. Both methods confirmed the efficiency of NBPT to inhibit urease activity even in the shortest incubation period and the lowest concentration being the most effective among the tested compounds. NBPT different concentrations did not result in differences in the enzyme urease activity. The results obtained by the method proposed by May & Douglas (1976) show that humic acids reduced enzymatic activity after 36 hours incubation. The zeolite has no influence on the activity of urease, when analyzed by the method of May & Douglas (1976). |
publishDate |
2015 |
dc.date.issued.fl_str_mv |
2015-07-28 |
dc.date.accessioned.fl_str_mv |
2019-02-06T17:58:06Z |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/masterThesis |
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dc.identifier.citation.fl_str_mv |
GOMES, Mateus de Paula. Efeito da adi??o de NBPT, ze?lita e ?cido h?mico na atividade da urease. 2015. 53 f. Disserta??o (Mestrado em Agronomia, Ci?ncia do Solo) - Instituto de Agronomia, Departamento de Solos, Universidade Federal Rural do Rio de Janeiro, Serop?dica - RJ, 2015. |
dc.identifier.uri.fl_str_mv |
https://tede.ufrrj.br/jspui/handle/jspui/2588 |
identifier_str_mv |
GOMES, Mateus de Paula. Efeito da adi??o de NBPT, ze?lita e ?cido h?mico na atividade da urease. 2015. 53 f. Disserta??o (Mestrado em Agronomia, Ci?ncia do Solo) - Instituto de Agronomia, Departamento de Solos, Universidade Federal Rural do Rio de Janeiro, Serop?dica - RJ, 2015. |
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https://tede.ufrrj.br/jspui/handle/jspui/2588 |
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por |
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Universidade Federal Rural do Rio de Janeiro |
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Programa de P?s-Gradua??o em Agronomia - Ci?ncia do Solo |
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UFRRJ |
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Brasil |
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Instituto de Agronomia |
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Universidade Federal Rural do Rio de Janeiro |
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