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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Efeitos de aduba??es de solo e doses de N em cobertura da alface. / Effects of soil fertilization and nitrogen rates in coverage on lettuce cultivation.

Moura, Vin?cius Valadares 24 September 2009 (has links)
Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T13:30:29Z No. of bitstreams: 5 1.pdf: 759671 bytes, checksum: 1f3560e9506658bab885766f9f65fd21 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20626 bytes, checksum: 7851d446050a985bd0603b7c4cee472d (MD5) license_rdf: 19710 bytes, checksum: aa65da15f424ff71c620a992a187295c (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T14:09:52Z (GMT) No. of bitstreams: 5 1.pdf: 759671 bytes, checksum: 1f3560e9506658bab885766f9f65fd21 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20626 bytes, checksum: 7851d446050a985bd0603b7c4cee472d (MD5) license_rdf: 19710 bytes, checksum: aa65da15f424ff71c620a992a187295c (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-27T14:09:52Z (GMT). No. of bitstreams: 5 1.pdf: 759671 bytes, checksum: 1f3560e9506658bab885766f9f65fd21 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20626 bytes, checksum: 7851d446050a985bd0603b7c4cee472d (MD5) license_rdf: 19710 bytes, checksum: aa65da15f424ff71c620a992a187295c (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2010 / Objetivou-se com este trabalho avaliar os efeitos de diferentes aduba??es de solo e doses de N em cobertura na cultura da alface. O experimento foi realizado no campus JK da UFVJM, em Diamantina/MG, no per?odo compreendido entre junho e setembro de 2008. O delineamento experimental utilizado foi em blocos ao acaso com parcelas subdivididas, com tr?s blocos, cinco aduba??es de solo: NPK+esterco, NPK, esterco, composto org?nico e vermicomposto e cinco doses de N em cobertura, sendo a parcela experimental constitu?da por dezesseis plantas, espa?adas em 0,30 m x 0,30 m. Foram avaliados a massa seca e fresca da parte a?rea, di?metro da cabe?a, n?mero de folhas, altura de plantas, vari?vel can?nica e teores foliares de N, P, K, Ca, MG, S, B, Cu, Fe, Mn e Zn. As vari?veis de produ??o foram afetadas pelo tipo de aduba??o de solo e pelas doses de N aplicadas em cobertura. A aduba??o com esterco foi a que proporcionou os melhores resultados para as caracter?sticas de produ??o avaliadas, seguida das aduba??es com NPK+esterco e vermicomposto. Para o cultivo da alface na regi?o de Diamantina/MG, recomenda-se aplicar 160 kg.ha-1 de N em cobertura. O processo de vermicompostagem reduziu os teores de B, Cu, Fe e Mn na parte a?rea das plantas de alface. Os teores dos nutrientes nas plantas de alface variaram em fun??o da aduba??o de solo e das doses de nitrog?nio em cobertura, o que mostra que, com o aumento das doses de N, houve aumento nos teores foliares dos nutrientes analisados, exceto para o B, Cu e Zn. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2009. / ABSTRACT The objective of this study was to evaluate the effects of different soil fertilization and nitrogen rates in coverage on lettuce cultivation. The experiment was accomplished on JK campus of UFVJM, Diamantina/MG, in the period between June and September of 2008. The experimental design was a randomized block with split plot with three blocks and five fertilization of soil: NPK + manure, fertilizer, manure, organic compost, vermicompost and five doses of nitrogen in coverage, considering that the experimental plot was composed of sixteen plants spaced by 0.30 m x 0.30 m. The dry and fresh weight, head diameter, leaf number, plant height, canonical variable and foliar contents of N, P, K, Ca, Mg, S, B, Cu, Fe, Mn and Zn were evaluated. The growth variables were affected by the type of soil fertilization and N rates applied in coverage. The manuring was the one that provided the best results for the evaluated growth features, followed by fertilization with NPK+manure and vermicompost. For the lettuce cultivation in the region of Diamantina/MG, it is recommended to apply 160 kg.ha-1 N in coverage. The vermicomposting process reduced the B, Cu, Fe and Mn content in lettuce weights. The nutrient contents in lettuce plants varied according to soil fertilization and nitrogen dosage in coverage, which shows that with increasing doses of N, there was an increase in the analyzed foliar nutrients, except for the B, Cu and Zn.
2

Pedagogia de projetos em experimento no cultivo org?nico de cenoura (Daucus carota, L.): estudo de caso com a turma do programa nacional de integra??o da educa??o profissional com a educa??o b?sica na modalidade educa??o de jovens e adultos ? PROEJA Quilombolas / Pedagogy of projects into experiments organic carrot farming (Daucus carota, L.). ? Case study with the group of the national educational program of professional Integration with basic schooling for young and adult education ? PROEJA Quilombolas

Souto, Gilberta Carneiro 13 September 2012 (has links)
Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-05-03T17:00:08Z No. of bitstreams: 1 2012 - Gilberta Carneiro Souto.pdf: 8657926 bytes, checksum: 46a4393891c53308f79101ccee493035 (MD5) / Made available in DSpace on 2017-05-03T17:00:08Z (GMT). No. of bitstreams: 1 2012 - Gilberta Carneiro Souto.pdf: 8657926 bytes, checksum: 46a4393891c53308f79101ccee493035 (MD5) Previous issue date: 2012-09-13 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / Research project carried out in the Federal Institute of Par?, campus of Castanhal, whose objective is to evaluate IF the use of pedagogy of projects in organic farming of carrots, (Daucus carota, L), trying different doses organic composes e humus of earthworms into two areas show different characteristics which can contribute with meaningful learning?s. The participating group is part of the National Educational Program of Professional Integration with Basic Schooling for Young and Adult Education - PROEJA formed by remaining Quilombolas, which resulted into a research on the history of this social group. The conventional carrot farming with exaggerated use of agrotoxics, waited for an opportunity for organic farming, with the intent to produce technical information which supply the local needs of production and free consumption of toxic residues. In the beginning it was produced the compound used as fertilizer in the Project. Each activity carried out generated an individual report. The students named the project as ?Carrot farming in the soil of Par?? and, they were divided into two groups, each group took care of an area, involving all the stages of the farming. The minimum processing of the carrot was mentioned by everyone, in their reports, as the glorious moment of the Project. In the agricultural part it was possible to evaluate the farming in relation to the soil in its physical and chemical part; and in relation to the plant it was possible to evaluate the production; the extraction of nutrients; the most required nutrients; the dry matter of the aerial part (MSPA), of the root (MSR) and total (MST); always in comparison to Area I, where there was organic farming with the Area II, where there never have been planted with organic fertilizing. The results showed that the effect of organic matter in the soil, is not immediate. Plants absorbed the nutrients, but that's not reflected in increased production of roots. The experiment should be repeated for the suggestion of fertilization is better defined. The high export of nutrients by plant suggests that remain always the remains of culture in the production area. The use of the pedagogy of projects provided significant learning / O Projeto de pesquisa foi realizado no Instituto Federal do Par?, campus Castanhal, com o objetivo de avaliar se o uso da Pedagogia de Projetos em cultivo org?nico de cenoura, Daucus carota, L, experimentando-se dosagens diferenciadas de composto org?nico e h?mus de minhocas em duas ?reas que apresentam caracter?sticas diferenciadas pode contribuir na aprendizagem significativa. A turma participante faz parte do Programa da Educa??o Nacional de Integra??o Profissional com a Educa??o B?sica na Modalidade Educa??o de Jovens e Adultos - PROEJA formado por remanescentes Quilombolas, o que levou a uma pesquisa sobre a hist?ria desse grupo social. O cultivo convencional da cenoura com uso exagerado de agrot?xicos, ensejou seu cultivo org?nico, com o intuito de produzir informa??es t?cnicas que atendam ?s necessidades locais de produ??o e consumo livre de res?duos t?xicos. Inicialmente foi produzido a compostagem usada como adubo no projeto. Cada atividade realizada gerou um relato individual. Os alunos denominaram o projeto de ?Cultivo de Cenoura em Solos Paraenses? e, se dividiram em duas equipes, cada equipe cuidou de uma ?rea, envolvendo todas as etapas do cultivo. O processamento m?nimo da cenoura foi citado por todos, em seus relatos, como a apoteose do projeto. Na parte agr?cola foi poss?vel avaliar o cultivo em rela??o ao solo em sua parte f?sica e qu?mica; e em rela??o ? planta foi poss?vel avaliar a produ??o; a extra??o dos nutrientes; quais os nutrientes mais exigidos; a mat?ria seca da parte a?rea (MSPA), da raiz (MSR) e total (MST); sempre se comparando a ?rea I, onde j? havia cultivo org?nico com a ?rea II, onde nunca havia sido cultivado com aduba??o org?nica. Os resultados demonstraram que o efeito da mat?ria org?nica no solo, n?o ? imediato. As plantas absorveram bem os nutrientes, mas isso n?o se refletiu no aumento da produ??o de ra?zes. O experimento deve ser repetido para que a sugest?o de aduba??o seja melhor definida. A elevada exporta??o de nutrientes pela planta sugere que se mantenham sempre os restos de cultura na ?rea de produ??o. O uso da Pedagogia de projetos proporcionou aprendizagem significativa
3

Uso de bioss?lido de lodo de esgoto em plantios de esp?cies da Mata Atl?ntica / Use of sewage sludge biosolids in plantation of Atlantic Forest species

SILVA, Marcelo Vin?cius da 02 June 2017 (has links)
Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2018-09-06T18:31:39Z No. of bitstreams: 1 2017 - Marcelo Vin?cius da Silva.pdf: 1010543 bytes, checksum: 23139cdc72e275133694cd8cbab18280 (MD5) / Made available in DSpace on 2018-09-06T18:31:39Z (GMT). No. of bitstreams: 1 2017 - Marcelo Vin?cius da Silva.pdf: 1010543 bytes, checksum: 23139cdc72e275133694cd8cbab18280 (MD5) Previous issue date: 2017-06-02 / CAPES / CNPq / Treated sewage sludge, called biosolid, contains high levels of macronutrients and organic matter, potentially being a great input for agricultural and forestry use. However, studies on the growth response of native forest tree species to biosolids fertilization are still very incipient. The objective of this study was to evaluate the effects of sewage sludge biosolids on the growth of seven Atlantic Forest tree species, commonly used in restoration plantations. In a field experiment in Serop?dica, RJ, was evaluated the effect of four doses of biosolids (0, 2, 4 and 8 L per planting pit) and a treatment with mineral fertilization on the growth of seven tree species. During 19 months, growth (height and diameter at soil height - DNS) and survival of the species Schinus terebinthifolius Radd were monitored. (Aroeira), Lafoensia glyptocarpa KOEHNE (mirindiba), Inga laurina (Sw.) Willd. (Ingla-laurine), Senna multijuga (Rich.) (Pau-cigarra), Genipa americana (Vell.) Brenan (genipapo). In a second planting, under the same treatments, the species Peltophorum dubium (Spreng.) Taub (dry flour) and Enterolobium contortisiliquum (Vell.) Morong (black ear) were monitored for 9 months. At the end of the monitoring period, the crown diameter and macronutrient leaf contents were also evaluated. The dose of up to 4 L of biosolid did not compromise the survival of the plants in the field. However, under the mineral fertilizer treatment, all plants of S. multijuga, 80% of I. laurina and 67% of plants of L. glyptocarpa, probably due to the effect of fertilizer salts on soil water potential Conjugated to the occurrence of a drought period after planting. The increase of the biosolid dose corresponded to a linear increase of the growth of the DNS of S. terebinthifolius, and of the growth in height, DNS and cup diameter of P. dubium. However, application of the 8 L dose of biosolids reduced up to 50% growth of S. multijuga. The species I. laurina, G. americana and E. contortisiliquum showed no response to biosolid application. Mineral fertilization significantly reduced the growth of S. terebinthifolius (p <0.05) and a similar trend was observed for G. americana, L. glyptocarpa and P. dubium (p <0.17). However, this same treatment increased the height growth of E. contortisiliquum by 70% in relation to the non-fertilized control. In general, the treatments did not significantly alter the macronutrient contents of the evaluated species. A clear exception was the increase of the Ca content in plants of L. glyptocarpa that received biosolids, and the increase of the N content in P. dubium treated with mineral fertilization. It is concluded that the different native forest species present different responses to the biosolid application. The dose of 4 L of biosolid was the only one that had no negative effect or promoted the growth of the Atlantic Forest tree species evaluated. It is recommended that similar studies be carried out on other soil types with other species in order to refine the recommendation of the use of biosolids in forest restoration plantations. Finally, caution is suggested in the use of mineral fertilizers for plantations with native species, as this practice may result in mortality or slow the growth of some species. / O lodo de esgoto tratado, denominado bioss?lido, cont?m altos teores de macronutrientes e mat?ria org?nica sendo, potencialmente, um ?timo insumo para utiliza??o agr?cola e florestal. Entretanto, estudos sobre a resposta de crescimento de esp?cies arb?reas florestais nativas ? aduba??o com bioss?lido ainda s?o muito incipientes. O objetivo desse estudo foi avaliar os efeitos proporcionados pela aplica??o de bioss?lido de lodo de esgoto sobre o crescimento de sete esp?cies arb?reas da Mata Atl?ntica, comumente utilizadas em plantios de restaura??o. Em um experimento de campo em Serop?dica, RJ, foi avaliado o efeito de quatro doses de bioss?lido (0, 2, 4 e 8 L por cova de plantio) e um tratamento com fertiliza??o mineral sobre o crescimento de sete esp?cies arb?reas. Ao longo de 19 meses foi monitorado o crescimento (altura e di?metro ? altura do solo ? DNS) e a sobreviv?ncia das esp?cies Schinus terebinthifolius Radd. (aroeira), Lafoensia glyptocarpa KOEHNE (mirindiba), Inga laurina (Sw.) Willd. (ing?-laurina), Senna multijuga (Rich.) (pau-cigarra), Genipa americana (Vell.) Brenan (jenipapo). Em um segundo plantio, sob os mesmos tratamentos, foi monitorado por 9 meses as esp?cies Peltophorum dubium (Spreng.) Taub (farinha-seca) e Enterolobium contortisiliquum (Vell.) Morong (orelha-de-negro). Ao final do per?odo de monitoramento, foi avaliado tamb?m o di?metro de copa e os teores foliares de macronutrientes. A dose de at? 4 L de bioss?lido n?o comprometeu a sobreviv?ncia das plantas em campo. Por?m, sob o tratamento com fertilizante mineral houve mortalidade de todas as plantas de S. multijuga, 80% de I. laurina e 67% das plantas de L. glyptocarpa, provavelmente em raz?o do efeito dos sais do fertilizante sobre o potencial h?drico do solo conjugado ? ocorr?ncia de um per?odo de estiagem ap?s o plantio. O aumento da dose de bioss?lido correspondeu a um aumento linear do crescimento do DNS de S. terebinthifolius, e do crescimento em altura, DNS e di?metro de copa de P. dubium. Entretanto, a aplica??o da dose de 8 L de bioss?lido reduziu em at? 50% o crescimento de S. multijuga. As esp?cies I. laurina, G. americana e E. contortisiliquum n?o apresentaram resposta ? aplica??o de bioss?lido. A aduba??o mineral reduziu significativamente o crescimento de S. terebinthifolius (p<0,05) e tend?ncia similar foi observada para G. americana, L. glyptocarpa e P. dubium (p<0,17). Entretanto, esse mesmo tratamento aumentou em 70% o crescimento em altura de E. contortisiliquum em rela??o ao controle n?o adubado. Em geral, os tratamentos n?o alteraram significativamente os teores de macronutrientes foliares das esp?cies avaliadas. Uma clara exce??o foi o aumento do teor de Ca em plantas de L. glyptocarpa que receberam bioss?lido, e o aumento do teor de N em P. dubium tratado com aduba??o mineral. Conclui-se que as diferentes esp?cies florestais nativas apresentam respostas distintas ? aplica??o de bioss?lido. A dose de 4 L/cova de bioss?lido foi a ?nica que n?o teve efeito negativo ou promoveu o crescimento da das esp?cies arb?reas da Mata Atl?ntica avaliadas. Recomenda-se que estudos similares sejam efetuados em outros tipos de solo com outras esp?cies de modo refinar a recomenda??o do uso do bioss?lido em plantios de restaura??o florestal. Por fim, sugere-se cautela no uso de fertilizantes minerais para plantios com esp?cies nativas, pois esta pr?tica pode resultar em mortalidade ou retardar o crescimento de algumas esp?cies.
4

Uso de composto de res?duos da ind?stria t?xtil na cultura da alface. / Use of compost waste of textile industry in fertilization of lettuce.

Carvalho, Alisson Jos? Eufr?sio de January 2012 (has links)
Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T13:30:37Z No. of bitstreams: 5 license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) 59.pdf: 1800639 bytes, checksum: 2a683010a1324143f5cfe6d19ea7a744 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T19:34:53Z (GMT) No. of bitstreams: 5 license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) 59.pdf: 1800639 bytes, checksum: 2a683010a1324143f5cfe6d19ea7a744 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-27T19:34:53Z (GMT). No. of bitstreams: 5 license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) 59.pdf: 1800639 bytes, checksum: 2a683010a1324143f5cfe6d19ea7a744 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2012 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes) / O crescimento populacional e o cen?rio industrial t?m aumentado ? produ??o de res?duos s?lidos e l?quidos. Este trabalho teve como objetivo avaliar o uso do composto de res?duos da ind?stria t?xtil na cultura da alface, em campo. As doses de composto org?nico de res?duos da ind?stria t?xtil foram 0; 7,5; 15; 30 e 60 m3 ha-1 e essas foram comparadas as mesmas doses de vermicomposto e a dose de 40 m3 ha-1 de esterco bovino (tratamento adicional). Os tratamentos foram dispostos em delineamento em blocos ao acaso, com quatro repeti??es em esquema de parcela subdividida, sendo as parcelas as fontes de fertilizantes e as subparcelas as doses. A dose econ?mica m?xima de composto para a massa fresca da parte a?rea foi de 27,9 m3 ha-1. Em rela??o ao vermicomposto, o composto promoveu maiores teores de P, Cu e Mn e resultado semelhante quanto ? respira??o basal, n?mero de folhas, perda acumulada de massa fresca, senesc?ncia e teores de N, K, Ca, S, B, Zn e Fe. Em rela??o ao esterco, estimou-se que dose equivalente do composto promove maiores teores de carbono org?nico e de macronutrientes, e foi semelhante quanto ? respira??o basal, perda acumulada de massa fresca, senesc?ncia e teores B, Zn, Fe e Mn. Em rela??o a outros res?duos citados na literatura o composto promoveu maior ou igual di?metro m?ximo da cabe?a, n?mero de folhas, massa fresca da parte a?rea, perda acumulada de massa fresca, teores de N, P, K, S, B, Zn e Cu. Os teores de Cu e Mn nas plantas de alface fertilizadas com o composto foram abaixo dos valores considerados t?xicos para consumo humano. A compostagem foi eficiente para o tratamento dos res?duos t?xicos da ind?stria t?xtil e o composto pode ser usado em substitui??o ao esterco bovino na cultura da alface. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT Population growth and industrial landscape have increased the production of solid and liquid waste. This study aimed to evaluate the use of compost waste from the textile industry in lettuce in the field. The doses of organic waste from the textile industry were 0; 7,5; 15, 30 and 60 m3 ha-1 and these were compared with the same doses of vermicompost and the dose of 40 m3 ha-1 of cattle manure (additional treatment). The treatments were arranged in randomized blocks, with four replications in a split-plot, and the sources of fertilizer plots and subplots doses. The economic dose of compound for maximum fresh weight of shoots was 27,9 m3 ha-1. In relation to humus, compost showed higher levels of P, Cu and Mn and a similar result as the basal respiration, leaf number, cumulative loss of weight, senescence and N, K, Ca, S, B, Zn and regarding Fe manure, it was estimated that the equivalent dose of the compound promotes higher levels of organic carbon and nutrients, and was similar for basal respiration, accumulated loss of weight, senescence and B levels, Zn, Fe and Mn. For other wastes reported in the literature the compound promoted or greater diameter of the head, leaf number, shoot fresh weight, cumulative loss of weight, N, P, K, S, B, Zn and Cu . The Cu and Mn in lettuce fertilized with compost were below those toxic for human consumption. Composting is effective for treatment of toxic waste from the textile industry and the compound can be used in place of manure on lettuce.

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