Absor??o e metabolismo de nitrog?nio por arroz em diferentes agroecossistemas sob disponibilidade sazonal de N-NO3-

Detalhes bibliográficos
Autor(a) principal: Araujo, Ana Maria Silva de
Data de Publicação: 2011
Tipo de documento: Tese
Idioma: por
Título da fonte: Biblioteca Digital de Teses e Dissertações da UFRRJ
Texto Completo: https://tede.ufrrj.br/jspui/handle/jspui/1260
Resumo: The wet tropical climate, characteristic of great part of the Northeast, Midwest and part of the Southeast regions of Brazil, present markedly a rainy season and a dry one. During the dry season, the evapotranspiration provides capillary movements of water in soil coincidently with the superficial accumulation of NO3 -. The amount of nitrate in the soil may vary with the seasonality of environmental variables, such as the temperature and precipitation, thus influencing the assimilation process, the consumption and the storage of that ion by the plants. This way, in the beginning of the rainy period there is a great availability of NO3 - in the soil. This phenomenon has being identified as nitrate flush. The objective of the study was to evaluate the possibility of occurrence of synchronism among N-NO3 - flush and absorption of N by two rice varieties dissimilar in the storage capacity and remobilization of N in field conditions. Two experiments were installed in two consecutive years in the town of S?o Luis and in Miranda do Norte, Maranh?o State. The areas had three different management systems: alley cropping, slash-and-burn agriculture (cutting down and burning), and conventional system. The legume trees used were: Leucaena leucocephala (Leucena); Clitoria fairchildiana (Philippine pigeonwings); and Acacia mangium (acacia). They were combined among themselves, in the following treatments: Philippine pigeonwings + Leucena (S + L); Acacia + Leucena (A + L), and a reference plot, without legume trees. The experimental design was of random blocks in sub-subdivided plots with four repetitions. The appraised parameters were: nitrate reductase (NR) activity, the plant N metabolism, the mineralization of N in soil, the seasonal flow of NO3 - in soil, biomass production, and the rice productivity. According to the results, the addition of biomass from legume trees did not cause great alterations in the soil characteristics, in S?o Luis and in the Miranda do Norte areas. In the soil the largest changes were observed for the burnt area and the one with conventional system. The Acacia + Leucena alley cropping influenced significantly most of evaluated variables, and in most of the time they showed superior to Sombreiro + Leucena alley and the testimony. In general, the activity of the nitrate reductase was low, for all systems. However, a variation was verified in the enzyme activity according to sampling period. The results showed the largest reductions in NO3 - in the hems, indicating this is the preferential plant part for N remobilization in rice. The traditional variety always presented lower values of NR activity, and it accumulated more NO3 - compared with the improved variety. There were seasonal variations in the levels of NO3 - and NH4 + in the soil; however the largest accumulations of NH4 + occurred in the superficial layer and in the beginning of the rainy season. The rice productivity was low; however it differed significantly among the management systems.
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spelling Fernandes, Manlio Silvestre002.180.573-34Souza, Sonia Regina de003.927.487-03Ferraz Junior, Altamiro Souza de Lima511.175.414-87Lima, Marcelo de FreitasBrefin, Maria de Lourdes Mendon?a SantosCabral, Luiz MorsZonta, Everaldo239.175.713-15http://lattes.cnpq.br/2318095256140938Araujo, Ana Maria Silva de2016-10-06T18:31:14Z2011-02-24ARAUJO, Ana Maria Silva de. Absor??o e metabolismo de nitrog?nio por arroz em diferentes agroecossistemas sob disponibilidade sazonal de N-NO3-. 2011. 204 f. Tese (Doutorado em Agronomia - Ci?ncia do Solo). Instituto de Agronomia, Departamento de Solos, Universidade Federal Rural do Rio de Janeiro, Serop?dica, 2011.https://tede.ufrrj.br/jspui/handle/jspui/1260The wet tropical climate, characteristic of great part of the Northeast, Midwest and part of the Southeast regions of Brazil, present markedly a rainy season and a dry one. During the dry season, the evapotranspiration provides capillary movements of water in soil coincidently with the superficial accumulation of NO3 -. The amount of nitrate in the soil may vary with the seasonality of environmental variables, such as the temperature and precipitation, thus influencing the assimilation process, the consumption and the storage of that ion by the plants. This way, in the beginning of the rainy period there is a great availability of NO3 - in the soil. This phenomenon has being identified as nitrate flush. The objective of the study was to evaluate the possibility of occurrence of synchronism among N-NO3 - flush and absorption of N by two rice varieties dissimilar in the storage capacity and remobilization of N in field conditions. Two experiments were installed in two consecutive years in the town of S?o Luis and in Miranda do Norte, Maranh?o State. The areas had three different management systems: alley cropping, slash-and-burn agriculture (cutting down and burning), and conventional system. The legume trees used were: Leucaena leucocephala (Leucena); Clitoria fairchildiana (Philippine pigeonwings); and Acacia mangium (acacia). They were combined among themselves, in the following treatments: Philippine pigeonwings + Leucena (S + L); Acacia + Leucena (A + L), and a reference plot, without legume trees. The experimental design was of random blocks in sub-subdivided plots with four repetitions. The appraised parameters were: nitrate reductase (NR) activity, the plant N metabolism, the mineralization of N in soil, the seasonal flow of NO3 - in soil, biomass production, and the rice productivity. According to the results, the addition of biomass from legume trees did not cause great alterations in the soil characteristics, in S?o Luis and in the Miranda do Norte areas. In the soil the largest changes were observed for the burnt area and the one with conventional system. The Acacia + Leucena alley cropping influenced significantly most of evaluated variables, and in most of the time they showed superior to Sombreiro + Leucena alley and the testimony. In general, the activity of the nitrate reductase was low, for all systems. However, a variation was verified in the enzyme activity according to sampling period. The results showed the largest reductions in NO3 - in the hems, indicating this is the preferential plant part for N remobilization in rice. The traditional variety always presented lower values of NR activity, and it accumulated more NO3 - compared with the improved variety. There were seasonal variations in the levels of NO3 - and NH4 + in the soil; however the largest accumulations of NH4 + occurred in the superficial layer and in the beginning of the rainy season. The rice productivity was low; however it differed significantly among the management systems.O clima tropical ?mido, caracter?stico de grande parte do Nordeste, Centro-Oeste e parte do Sudeste do Brasil, apresenta de forma marcante uma esta??o chuvosa e outra seca. Durante a esta??o seca, a evapotranspira??o proporciona movimentos capilares de ?gua no solo coincidentes com o ac?mulo superficial de NO3 -. Esse conte?do de nitrato no solo pode variar com a sazonalidade de vari?veis ambientais, tais como a temperatura e a precipita??o, assim influenciando o processo de assimila??o, o consumo e o armazenamento desse ?on pelas plantas. Portanto, no in?cio do per?odo chuvoso ocorre grande disponibilidade de NO3 - no solo e este fen?meno tem sido denominado como ?flush? de nitrato. O objetivo do estudo foi o de avaliar a possibilidade de ocorr?ncia do sincronismo entre esse ?flush? de N-NO3 - e a absor??o de N por duas variedades de arroz diferentes quanto ? capacidade de armazenamento e remobiliza??o de N em condi??es de campo. Para tal, foram instalados dois experimentos por dois anos consecutivos nos munic?pios de S?o Luis e Miranda do Norte, Estado do Maranh?o em tr?s diferentes sistemas de manejo: cultivo em al?ias, ro?a no toco (derrubada e queima) e sistema convencional. As esp?cies de leguminosas utilizadas foram: Leucaena leucocephala (leucena); a Clitoria fairchildiana (sombreiro) e a Acacia mangium (ac?cia), combinadas entre si, nos seguintes tratamentos: Sombreiro + Leucena (S + L); Ac?cia + Leucena (A+ L) e Testemunha, sem leguminosas. Em todos os sistemas de manejo adotou-se o delineamento experimental de blocos casualizados em parcelas sub-subdivididas com quatro repeti??es. Os par?metros avaliados foram ? atividade da nitrato redutase, o metabolismo do N na planta, o fluxo sazonal de NO3 - no solo, produ??o de biomassa e a produtividade do arroz. De acordo com resultados, a adi??o de biomassa das leguminosas n?o causou grandes altera??es nas caracter?sticas do solo tanto em S?o Luis quanto no munic?pio de Miranda do Norte. No solo as maiores altera??es foram observadas para o a ?rea queimada e a ?rea mantida em sistema convencional. As al?ias de Ac?cia + Leucena influenciaram de forma significativa a maioria das vari?veis avaliadas apresentando-se na maioria das vezes superiores as al?ias de Sombreiro + Leucena e a testemunha. No geral, a atividade da nitrato redutase foi baixa em todos os sistemas de manejo. No entanto, constatou-se varia??o na atividade da enzima em fun??o ?poca de amostragem. Os resultados mostraram que as maiores redu??es nos teores de NO3 - foram observados nas bainhas, indicando ser este o local preferencial para a remobiliza??o de N em arroz. A variedade tradicional apresentou sempre valores mais baixos de atividade da NR e acumulou mais NO3 - comparada com a variedade melhorada. Houve varia??es sazonais no teor de NO3 - e NH4 + no solo, por?m os maiores ac?mulos de NH4 + ocorreram na camada superficial e in?cio da esta??o chuvosa. A produtividade do arroz foi baixa, por?m diferiu de forma significativa entre os sistemas de manejo.Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2016-10-06T18:31:14Z No. of bitstreams: 1 2011 - Ana Maria Silva de Araujo.pdf: 2356633 bytes, checksum: ddb45ffd88bc508180544f6f9a4cb0a3 (MD5)Made available in DSpace on 2016-10-06T18:31:14Z (GMT). No. of bitstreams: 1 2011 - Ana Maria Silva de Araujo.pdf: 2356633 bytes, checksum: ddb45ffd88bc508180544f6f9a4cb0a3 (MD5) Previous issue date: 2011-02-24CAPESCNPqapplication/pdfhttps://tede.ufrrj.br/retrieve/57958/2011%20-%20Ana%20Maria%20Silva%20de%20Araujo.pdf.jpgporUniversidade Federal Rural do Rio de JaneiroPrograma de P?s-Gradua??o em Agronomia - Ci?ncia do SoloUFRRJBrasilInstituto de AgronomiaNitrate reductaseSeasonal flow of NO3-Oriza sativa L.Nitrato redutaseFluxo sazonal de NO3-Oriza sativa L.AgronomiaAbsor??o e metabolismo de nitrog?nio por arroz em diferentes agroecossistemas sob disponibilidade sazonal de N-NO3-Absorption and metabolism of nitrogen for rice in areas under seasonal availability of N-NO3-info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisinfo:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da UFRRJinstname:Universidade Federal Rural do Rio de Janeiro (UFRRJ)instacron:UFRRJTEXT2011 - Ana Maria Silva de Araujo.pdf.txt2011 - Ana Maria Silva de Araujo.pdf.txttext/plain575956http://localhost:8080/tede/bitstream/jspui/1260/17/2011+-+Ana+Maria+Silva+de+Araujo.pdf.txt4e35257bc4f6e810590e17277203b4f0MD517ORIGINAL2011 - Ana Maria Silva de Araujo.pdf2011 - Ana Maria Silva de Araujo.pdfapplication/pdf2327701http://localhost:8080/tede/bitstream/jspui/1260/4/2011+-+Ana+Maria+Silva+de+Araujo.pdf3748863fed3e18b1296b924dc025a3b3MD54THUMBNAIL2011 - Ana Maria Silva de Araujo.pdf.jpg2011 - Ana Maria Silva de Araujo.pdf.jpgimage/jpeg4197http://localhost:8080/tede/bitstream/jspui/1260/18/2011+-+Ana+Maria+Silva+de+Araujo.pdf.jpg4f7fc55ed530e3ddb82f73ddf21d72ccMD518LICENSElicense.txtlicense.txttext/plain; charset=utf-82089http://localhost:8080/tede/bitstream/jspui/1260/1/license.txt7b5ba3d2445355f386edab96125d42b7MD51jspui/12602022-07-08 19:42:09.924oai:localhost: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Biblioteca Digital de Teses e Dissertaçõeshttps://tede.ufrrj.br/PUBhttps://tede.ufrrj.br/oai/requestbibliot@ufrrj.br||bibliot@ufrrj.bropendoar:2022-07-08T22:42:09Biblioteca Digital de Teses e Dissertações da UFRRJ - Universidade Federal Rural do Rio de Janeiro (UFRRJ)false
dc.title.por.fl_str_mv Absor??o e metabolismo de nitrog?nio por arroz em diferentes agroecossistemas sob disponibilidade sazonal de N-NO3-
dc.title.alternative.eng.fl_str_mv Absorption and metabolism of nitrogen for rice in areas under seasonal availability of N-NO3-
title Absor??o e metabolismo de nitrog?nio por arroz em diferentes agroecossistemas sob disponibilidade sazonal de N-NO3-
spellingShingle Absor??o e metabolismo de nitrog?nio por arroz em diferentes agroecossistemas sob disponibilidade sazonal de N-NO3-
Araujo, Ana Maria Silva de
Nitrate reductase
Seasonal flow of NO3-
Oriza sativa L.
Nitrato redutase
Fluxo sazonal de NO3-
Oriza sativa L.
Agronomia
title_short Absor??o e metabolismo de nitrog?nio por arroz em diferentes agroecossistemas sob disponibilidade sazonal de N-NO3-
title_full Absor??o e metabolismo de nitrog?nio por arroz em diferentes agroecossistemas sob disponibilidade sazonal de N-NO3-
title_fullStr Absor??o e metabolismo de nitrog?nio por arroz em diferentes agroecossistemas sob disponibilidade sazonal de N-NO3-
title_full_unstemmed Absor??o e metabolismo de nitrog?nio por arroz em diferentes agroecossistemas sob disponibilidade sazonal de N-NO3-
title_sort Absor??o e metabolismo de nitrog?nio por arroz em diferentes agroecossistemas sob disponibilidade sazonal de N-NO3-
author Araujo, Ana Maria Silva de
author_facet Araujo, Ana Maria Silva de
author_role author
dc.contributor.advisor1.fl_str_mv Fernandes, Manlio Silvestre
dc.contributor.advisor1ID.fl_str_mv 002.180.573-34
dc.contributor.advisor-co1.fl_str_mv Souza, Sonia Regina de
dc.contributor.advisor-co1ID.fl_str_mv 003.927.487-03
dc.contributor.advisor-co2.fl_str_mv Ferraz Junior, Altamiro Souza de Lima
dc.contributor.advisor-co2ID.fl_str_mv 511.175.414-87
dc.contributor.referee1.fl_str_mv Lima, Marcelo de Freitas
dc.contributor.referee2.fl_str_mv Brefin, Maria de Lourdes Mendon?a Santos
dc.contributor.referee3.fl_str_mv Cabral, Luiz Mors
dc.contributor.referee4.fl_str_mv Zonta, Everaldo
dc.contributor.authorID.fl_str_mv 239.175.713-15
dc.contributor.authorLattes.fl_str_mv http://lattes.cnpq.br/2318095256140938
dc.contributor.author.fl_str_mv Araujo, Ana Maria Silva de
contributor_str_mv Fernandes, Manlio Silvestre
Souza, Sonia Regina de
Ferraz Junior, Altamiro Souza de Lima
Lima, Marcelo de Freitas
Brefin, Maria de Lourdes Mendon?a Santos
Cabral, Luiz Mors
Zonta, Everaldo
dc.subject.eng.fl_str_mv Nitrate reductase
Seasonal flow of NO3-
Oriza sativa L.
topic Nitrate reductase
Seasonal flow of NO3-
Oriza sativa L.
Nitrato redutase
Fluxo sazonal de NO3-
Oriza sativa L.
Agronomia
dc.subject.por.fl_str_mv Nitrato redutase
Fluxo sazonal de NO3-
Oriza sativa L.
dc.subject.cnpq.fl_str_mv Agronomia
description The wet tropical climate, characteristic of great part of the Northeast, Midwest and part of the Southeast regions of Brazil, present markedly a rainy season and a dry one. During the dry season, the evapotranspiration provides capillary movements of water in soil coincidently with the superficial accumulation of NO3 -. The amount of nitrate in the soil may vary with the seasonality of environmental variables, such as the temperature and precipitation, thus influencing the assimilation process, the consumption and the storage of that ion by the plants. This way, in the beginning of the rainy period there is a great availability of NO3 - in the soil. This phenomenon has being identified as nitrate flush. The objective of the study was to evaluate the possibility of occurrence of synchronism among N-NO3 - flush and absorption of N by two rice varieties dissimilar in the storage capacity and remobilization of N in field conditions. Two experiments were installed in two consecutive years in the town of S?o Luis and in Miranda do Norte, Maranh?o State. The areas had three different management systems: alley cropping, slash-and-burn agriculture (cutting down and burning), and conventional system. The legume trees used were: Leucaena leucocephala (Leucena); Clitoria fairchildiana (Philippine pigeonwings); and Acacia mangium (acacia). They were combined among themselves, in the following treatments: Philippine pigeonwings + Leucena (S + L); Acacia + Leucena (A + L), and a reference plot, without legume trees. The experimental design was of random blocks in sub-subdivided plots with four repetitions. The appraised parameters were: nitrate reductase (NR) activity, the plant N metabolism, the mineralization of N in soil, the seasonal flow of NO3 - in soil, biomass production, and the rice productivity. According to the results, the addition of biomass from legume trees did not cause great alterations in the soil characteristics, in S?o Luis and in the Miranda do Norte areas. In the soil the largest changes were observed for the burnt area and the one with conventional system. The Acacia + Leucena alley cropping influenced significantly most of evaluated variables, and in most of the time they showed superior to Sombreiro + Leucena alley and the testimony. In general, the activity of the nitrate reductase was low, for all systems. However, a variation was verified in the enzyme activity according to sampling period. The results showed the largest reductions in NO3 - in the hems, indicating this is the preferential plant part for N remobilization in rice. The traditional variety always presented lower values of NR activity, and it accumulated more NO3 - compared with the improved variety. There were seasonal variations in the levels of NO3 - and NH4 + in the soil; however the largest accumulations of NH4 + occurred in the superficial layer and in the beginning of the rainy season. The rice productivity was low; however it differed significantly among the management systems.
publishDate 2011
dc.date.issued.fl_str_mv 2011-02-24
dc.date.accessioned.fl_str_mv 2016-10-06T18:31:14Z
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.citation.fl_str_mv ARAUJO, Ana Maria Silva de. Absor??o e metabolismo de nitrog?nio por arroz em diferentes agroecossistemas sob disponibilidade sazonal de N-NO3-. 2011. 204 f. Tese (Doutorado em Agronomia - Ci?ncia do Solo). Instituto de Agronomia, Departamento de Solos, Universidade Federal Rural do Rio de Janeiro, Serop?dica, 2011.
dc.identifier.uri.fl_str_mv https://tede.ufrrj.br/jspui/handle/jspui/1260
identifier_str_mv ARAUJO, Ana Maria Silva de. Absor??o e metabolismo de nitrog?nio por arroz em diferentes agroecossistemas sob disponibilidade sazonal de N-NO3-. 2011. 204 f. Tese (Doutorado em Agronomia - Ci?ncia do Solo). Instituto de Agronomia, Departamento de Solos, Universidade Federal Rural do Rio de Janeiro, Serop?dica, 2011.
url https://tede.ufrrj.br/jspui/handle/jspui/1260
dc.language.iso.fl_str_mv por
language por
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal Rural do Rio de Janeiro
dc.publisher.program.fl_str_mv Programa de P?s-Gradua??o em Agronomia - Ci?ncia do Solo
dc.publisher.initials.fl_str_mv UFRRJ
dc.publisher.country.fl_str_mv Brasil
dc.publisher.department.fl_str_mv Instituto de Agronomia
publisher.none.fl_str_mv Universidade Federal Rural do Rio de Janeiro
dc.source.none.fl_str_mv reponame:Biblioteca Digital de Teses e Dissertações da UFRRJ
instname:Universidade Federal Rural do Rio de Janeiro (UFRRJ)
instacron:UFRRJ
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repository.name.fl_str_mv Biblioteca Digital de Teses e Dissertações da UFRRJ - Universidade Federal Rural do Rio de Janeiro (UFRRJ)
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