Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-23T14:01:53Z No. of bitstreams: 5 15.pdf: 1451318 bytes, checksum: bf4c447fee881cbe87b63b4eb3d3037e (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-10T11:20:27Z (GMT) No. of bitstreams: 5 15.pdf: 1451318 bytes, checksum: bf4c447fee881cbe87b63b4eb3d3037e (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-10T11:20:27Z (GMT). No. of bitstreams: 5 15.pdf: 1451318 bytes, checksum: bf4c447fee881cbe87b63b4eb3d3037e (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2012 / Trabalhos que avaliam os aspectos t?cnicos e econ?micos do processo produtivo da cultura do eucalipto praticada pelos produtores rurais no Alto Jequitinhonha, regi?o que possui uma das maiores ?reas plantadas com essa esp?cie no estado de Minas Gerais, s?o pouco frequentes. A participa??o de Produtores Rurais (PR) tem se destacado nos ?ltimos anos e socializa uma atividade ent?o praticada predominantemente por grandes empresas florestais, fato este que suporta a escassez de trabalhos direcionados para produ??o em menor escala. Este estudo objetivou avaliar as pr?ticas de silvicultura empregadas pelos PR tendo como refer?ncia as pr?ticas adotadas por uma empresa que utiliza em seus plantios as melhores tecnologias silviculturais; estimar os custos de forma??o e condu??o de florestas conforme os procedimentos empregados pelos produtores em rela??o a diferentes op??es tecnol?gicas; e analisar o retorno de investimentos estimados sob crit?rios econ?micos. A popula??o abrangida neste estudo correspondeu a 583 PR do Alto Jequitinhonha que apresentaram Declara??es de Colheita e Comercializa??o no Instituto Estadual de Florestas entre janeiro de 2008 e outubro de 2009. Neste universo, 71 PR foram escolhidos aleatoriamente para responder um formul?rio com perguntas que abordaram a origem do material gen?tico, espa?amento, rota??o, todas as pr?ticas de silvicultura, a colheita e comercializa??o da madeira adotada. Estas mesmas vari?veis foram avaliadas em uma grande empresa florestal instalada na regi?o que trabalha com as melhores pr?ticas silviculturais. Ap?s obtidos, os dados foram analisados pela estat?stica descritiva. Os PR do Alto Jequitinhonha t?m significativa ?rea plantada com Eucalyptus urophylla e E. cloesiana, entretanto a tecnologia de silvicultura adotada ? obsoleta em rela??o ?s tecnologias empregadas por grandes empresas. Consequentemente, reduzem-se o potencial produtivo dos s?tios florestais e o retorno econ?mico. De forma geral a madeira de eucalipto ? direcionada para produ??o de carv?o vegetal. A tecnologia utilizada pelos produtores rurais na regi?o de estudo n?o ofereceu os melhores resultados econ?micos em qualquer dos cen?rios de pre?os estudados quando comparadas com a tecnologia utilizada pela empresa que utiliza elevado n?vel tecnol?gico. Devido ?s suas propriedades tecnol?gicas e ao uso pelo mercado madeireiro, a melhor viabilidade econ?mica para a madeira do E. cloesiana ? sua comercializa??o para a produ??o de postes de cerca, mour?es e para a constru??o civil. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT Studies evaluating the technical processes of eucalyptus plantation by small and medium forest farmers at Alto Jequitinhonha region, in the northeast part of the state of Minas Gerais, are rare, even though this state has one of the largest eucalyptus areas in Brazil. The participation of farmers has been prominent in recent years, increasing the social benefits of eucalyptus plantation, as it had been traditionally planted by large forest companies so far. This study aimed to evaluate the forestry practices employed by these farmers in comparison to the best practices adopted by traditional companies, by estimating cost x benefit relation of forestry as a complementary business, based on the procedures carried out by these farmers under different technological options. The population covered by this study was represented by 583 farmers from Alto Jequitinhonha, who registered a document called ?Harvest statement?, as required by the state agency ?Instituto Estadual de Florestas?, between January 2008 and October 2009. From these, 71 farmers were randomly selected to answer a questionnaire addressing data such as the origin of species, spacing, rotation, the main silvicultural practices, harvesting and commercialization strategies employed. The same variables from a large regional forestry company were evaluated and used as reference. Data collected was analyzed by using descriptive statistics. It was found that farmers of Alto Jequitinhonha owns a very significant planted area with Eucalyptus urophylla and E. Cloesiana, although they employ much lower technological level in comparison to the technologies used by the large company. In consequence, the potential yield in these sites is reduced. In general, the eucalyptus wood is intended for charcoal production. The technology used by farmers in the study area did not offer the best economic results in any of the price scenarios studied, when compared to the company used as reference. E. cloesiana showed a better economic return, due to its technological properties and better acceptance into the local market, for lamp posts, fence posts and overall use in civil construction.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-23T14:01:53Z No. of bitstreams: 5 16.pdf: 1254456 bytes, checksum: 6bdb7f3881e58eaf68b455868c01b886 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-10T11:21:28Z (GMT) No. of bitstreams: 5 16.pdf: 1254456 bytes, checksum: 6bdb7f3881e58eaf68b455868c01b886 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-10T11:21:28Z (GMT). No. of bitstreams: 5 16.pdf: 1254456 bytes, checksum: 6bdb7f3881e58eaf68b455868c01b886 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2012 / O Instituto Estadual de Florestas de Minas Gerais (IEF) promove o fomento buscando a recupera??o ou a restaura??o florestal em conjunto com o produtor rural. Desde 2007 at? hoje, atingiu-se aproximadamente 50 mil hectares em projetos de fomento com o vi?s protetivo. As t?cnicas utilizadas nos projetos de fomento florestal s?o a promo??o ou indu??o da regenera??o natural, o enriquecimento por meio de mudas e quando necess?rio o plantio total da ?rea com mudas de esp?cies florestais nativas de ocorr?ncia natural da regi?o. Para avaliar se tais a??es v?m atingindo os seus objetivos, se os recursos investidos est?o sendo bem empregados ou, ainda, se ser? necess?rio readequar as a??es adotadas, faz-se necess?rio avaliar e monitorar as ?reas restauradas no ?mbito do programa. Diante deste esfor?o o monitoramento destas ?reas trabalhadas permite que o programa de fomento avalie as melhorias no sentido de torn?-los mais eficazes. A proposta deste estudo foi sugerir uma metodologia para a avalia??o dos projetos de recupera??o do programa de fomento florestal, orientados por princ?pios, crit?rios e indicadores, procurando verificar as tend?ncias de sucesso dos projetos. Foram visitados aleatoriamente 19 projetos nos munic?pios de Concei??o do Mato Dentro, Datas, Diamantina, Rio Vermelho, Santo Ant?nio do Itamb? e Serro e aplicada uma matriz com os indicadores baseados em dois crit?rios de forma que qualquer servidor da autarquia tenha a capacidade de aplic?-la, sem a necessidade de especialistas para a execu??o do monitoramento. Baseando-se nas recomenda??es t?cnicas e legislativas, desenvolveram-se par?metros de refer?ncia para avaliar o estado do projeto de que foi executado. Por conta das diferentes fitofisionomias da regi?o de estudo foram elaborados par?metros de refer?ncia para a Floresta Estacional Semidecidual e Campo Rupestre. Os dados foram analisados por meio da an?lise do componente principal (PCA) e TWINSPAN. Com a metodologia proposta foi poss?vel verificar se os projetos de fomento est?o adequados quanto ?s recomenda??es t?cnicas e liter?rias. Este estudo demonstrou que ? poss?vel realizar o monitoramento dos projetos de recupera??o/ restaura??o do programa de fomento florestal do IEF. Outra caracter?stica importante pauta-se na utiliza??o de baixos recursos financeiros e apontar o desempenho dos projetos avaliados. A proposta n?o foi capaz de apontar todos os par?metros ecol?gicos, mas detecta as altera??es favor?veis e desafor?veis ? resili?ncia dos projetos de recupera??o, requerendo maiores estudos e ajustes a fim de agregar melhorias na qualidade do monitoramento. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT The State Forestry Institute of Minas Gerais (IEF) promotes fomenting by seeking forest recovery or restoration in conjunction with rural producers. From 2007 to present date, it reached approximately 50,000 hectares in development projects with the protective bias. The techniques used in forest development projects are the promotion or induction of natural regeneration, the enrichment trough seedlings and when it is necessary, the plantation of the whole area with seedlings of native tree species from the region. To assess whether these restore\ recovery actions are reaching their goals, whether the resources invested in these actions are being well employed, or even if it will be necessary some rearrangement in the taken actions, it was necessary to evaluate and monitor the restored areas within the program scope. Before this effort, the monitoring of these worked areas allows that the development program assess the improvement rates in order to make them more effective. This study aims to suggest an assessment methodology of the restoration projects of the forest development program, guided by principles, criteria and indicators, seeking to verify the trends of successful projects. 19 projects were randomly visited in the municipalities of Concei??o do Mato Dentro, Datas, Diamantina, Rio Vermelho, Santo Antonio do Itamb? and Serro and it was applied an array of indicators based on two criteria therefore any civil servant in the local authority would be able to apply it, without needing an expertise to perform the monitoring. Based on technical and legislative recommendations, it was developed benchmarks to assess the project status executed. Because of the different phyto-physiognomies in studied area some benchmarks were developed for the Stational Semideciduous Forest and Rupestrian Field. Data were analyzed through principal component analysis (PCA) and TWINSPAN. With the proposed methodology it was possible to verify if the development projects were suitable with literary and technical recommendations. This study demonstrates that it is possible to perform the monitoring of recovering\ restoration projects of the forest development program of the IEF. Another important feature is guided by the usage of low financial resources and it also points the performance of evaluated projects. The proposal was not able to point all ecological benchmarks, but it detects favorable and unfavorable changes concerning the resilience of the recovery projects, requiring further studies and adjustments in order to add improvements to the quality of monitoring.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-23T14:01:55Z No. of bitstreams: 5 3.pdf: 1034963 bytes, checksum: 27452f3d2f5ab39ea04dc92852370608 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-10T13:05:43Z (GMT) No. of bitstreams: 5 3.pdf: 1034963 bytes, checksum: 27452f3d2f5ab39ea04dc92852370608 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-10T13:05:43Z (GMT). No. of bitstreams: 5 3.pdf: 1034963 bytes, checksum: 27452f3d2f5ab39ea04dc92852370608 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2012 / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Objetivou-se com este trabalho estudar o efeito do espa?amento de plantio e do tempo na produ??o de biomassa, na rota??o econ?mica, e em vari?veis de povoamento e dendrom?tricas de plantios clonais de eucalipto. Foi instalado um experimento em ?reas da empresa APERAM BIOENERGIA, no munic?pio de Itamarandiba - MG, utilizando o delineamento experimental, blocos ao acaso. As parcelas foram constitu?das por cinco espa?amentos iniciais de plantio (3,0 x 0,5 m; 3,0 x 1,0 m; 3,0 x 1,5 m; 3,0 x 2,0 m e 3,0 x 3,0 m) e as ?pocas de medi??o ocorreram aos 7, 12, 18, 24, 48, 61, 77, 85 e 102 meses. A partir das informa??es coletadas em campo, foram estimados para cada tratamento o volume e a biomassa por hectare, a densidade b?sica, o poder calor?fico superior, al?m de outras vari?veis dendrom?tricas e de povoamento. Verificou-se que o espa?amento e a idade influenciaram significativamente nos valores de di?metro m?dio, de altura total, de ?rea basal por hectare, de volume total por hectare, de biomassa por hectare, de densidade b?sica da madeira e de poder calor?fico superior. O crescimento em volume por hectare em biomassa por hectare e em ?rea basal por hectare apresentou rela??o direta com a densidade de plantio, sendo os maiores valores obtidos nos menores espa?amentos. Por outro lado, o di?metro m?dio e a altura total das ?rvores apresentaram correla??o negativa com a densidade de plantio. A densidade b?sica tende a aumentar com o espa?amento e com a idade das ?rvores. E o poder calor?fico tende a elevar-se com a idade e com o espa?amento de plantio. Os espa?amentos estudados n?o influenciaram a porcentagem de sobreviv?ncia das ?rvores. A rota??o t?cnica e a rota??o econ?mica ocorreram mais cedo nos plantios com espa?amento menor. Para todos os espa?amentos a idade t?cnica de corte foi inferior ? idade econ?mica de corte. O espa?amento 3,0 x 1,5 mostrou-se como a op??o mais atrativa segundo os crit?rios VPL e BPE, considerando a venda de madeira em p?. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT The objective of this work was to study the effect of planting spacing and time in the production of biomass in the economic rotation, and dendrometric variable and stand variables of a stand of eucalyptus clonal. The experiment was performed in areas of the company APERAM BIOENERGIA in the city of Itamarandiba, MG, using a randomized block design. The plots consisted of five spacing initial (3.0 x 0.5 m, 3.0 x 1.0 m, 3.0 x 1.5 m, 3.0 and 3.0 x 2.0 x 3.0 m) and measurements were performed at 7, 12, 18, ??24, 48, 61, 77, 85 and 102 months. From the information collected in the field were estimated for each treatment the volume and biomass per hectare, density, calorific value, and other dendrometric variable and stand variables. It was found that the spacing and age influence significant on the values ??of average diameter, height total, basal area, volume total per hectare, biomass per hectare, density and calorific value. The growth in volume per hectare in the biomass per hectare and basal area per hectare was directly related to planting density, and the higher values ??for the smaller spacing. On the other hand the average diameter and total height of the trees were negatively correlated with the density. The specific gravity tends to increase with age and with the spacing of the trees. And the calorific value tends to rise with age and with the planting spacing. The spacing did not influence the survival rate of trees. The technique rotation and economic rotation occurred earlier in smaller plantings spaced. For all spacing the technique age cutting was higher than the economic age cutting. The spacing of 3.0 x 1.5 proved to be a more attractive option according to the criteria net present value and equivalent periodic benefit, considering the sale of standing timber.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-23T14:01:55Z No. of bitstreams: 5 4.pdf: 1336645 bytes, checksum: b9aa2a5ec89cf8811ce03ef7c1bff0f0 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-10T13:07:11Z (GMT) No. of bitstreams: 5 4.pdf: 1336645 bytes, checksum: b9aa2a5ec89cf8811ce03ef7c1bff0f0 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-10T13:07:11Z (GMT). No. of bitstreams: 5 4.pdf: 1336645 bytes, checksum: b9aa2a5ec89cf8811ce03ef7c1bff0f0 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2012 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Este trabalho teve como objetivo conhecer a estrutura e a composi??o flor?stica de um remanescente de Floresta Estacional Semidecidual, al?m de determinar o volume de povoamento por meio da aplica??o de modelos de regress?o e utiliza??o de redes neurais artificiais. O remanescente possui aproximadamente 162 hectares e est? localizado na Fazenda Experimental do Moura em Curvelo, MG, no qual foram alocadas sistematicamente 25 unidades amostrais de 400 m? (10 X 40 m), e todos os indiv?duos vivos do compartimento arb?reo-arbustivo que possu?am fuste com DAP ? 5 cm tiveram registrados os valores dos DAPs, altura total e de fuste, e atributos categ?ricos referentes ? sanidade e tortuosidade dos fustes. Foram amostrados 1105 indiv?duos distribu?dos em 114 esp?cies, 41 fam?lias e 91 g?neros. Os valores encontrados para o ?ndice de diversidade de Shannon Weaver e equabilidade de Pielou foram de 3,91 e 0,82 respectivamente. Pela an?lise volum?trica, verificou-se que modelos que utilizam a ?rea basal e altura m?dia como vari?veis independentes apresentam estimativas aproximadas para quantificar o volume de povoamento, sendo indicados para esta finalidade. Do mesmo modo, a metodologia de redes neurais artificiais tamb?m se mostrou eficiente na quantifica??o do volume de florestas nativas nas condi??es deste estudo, pelo teste e n?vel de signific?ncia adotados. A associa??o de vari?veis categ?ricas ?s cont?nuas nas camadas de entrada das redes neurais geradas, n?o resultou em estimativas mais precisas pelas condi??es assumidas neste trabalho. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT This study aimed to know the structure and floristic composition of woody compartment of a remnant of semideciduous forest, as well as determine the stand volume by applying regression models and use of artificial neural networks. The remnant has approximately 162 hectares and is located on the Experimental Moura?s Farm in Curvelo, MG, which were systematically allocated 25 plots of 400 m? (10 X 40 m), and all the individuals of the woody compartment who had bole with a DBH ? 5 cm were recorded values?? of DBHs, total height and bole, and categorical attributes related to the sanity and tortuosity of the boles. Were sampled 1105 individuals in 114 species, 41 families and 91 genera. The values? ?found for the index of Shannon Weaver diversity and evenness were 3.91 and 0.82 respectively. By volume analysis, it was found that models that use basal area and the average height as independent variables have rough estimates to quantify the stand volume, being indicated for this purpose. Similarly, the methodology of artificial neural networks also proved to be efficient in quantifying the volume of native forests in the conditions of this study, by the test and significance level adopted. The association of categorical variables to continuous in the input layers of neural networks generated, did not result in more accurate estimates by the conditions assumed in this work.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-23T14:01:55Z No. of bitstreams: 5 6.pdf: 739017 bytes, checksum: e138b821402f0e1be4f8d8ea9955fe76 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-10T13:09:42Z (GMT) No. of bitstreams: 5 6.pdf: 739017 bytes, checksum: e138b821402f0e1be4f8d8ea9955fe76 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-10T13:09:42Z (GMT). No. of bitstreams: 5 6.pdf: 739017 bytes, checksum: e138b821402f0e1be4f8d8ea9955fe76 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2012 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Objetivou-se com esse trabalho avaliar o impacto do uso de herbicidas na regenera??o e no banco de sementes em ?reas em processo de recupera??o. Para isso, foram desenvolvidos quatro experimentos sendo tr?s em ambiente de campo e um em ambiente protegido. No primeiro experimento, avaliou-se a infesta??o de gram?neas ex?ticas sobre o processo de regenera??o natural. No segundo, avaliou-se a influ?ncia do banco de sementes no processo de restaura??o de ?reas infestadas com plantas daninhas gram?neas. No terceiro trabalho, foi avaliada a sensibilidade de algumas esp?cies arb?reas nativas ? a??o do herbicida glyphosate e no quarto e ?ltimo experimento foi avaliado o efeito desse herbicida e do paraquat no controle das gram?neas invasoras em ?reas degradadas, comparado ? ro?ada, visando ? adequa??o de m?todos mais eficientes no controle de plantas daninhas. A partir de uma cobertura de plantas daninhas acima de 50% h? retrocesso no processo de regenera??o natural, por?m, h? um grupo de plantas capaz de colonizar tal ?rea. Verificou-se tamb?m que o banco sementes ? composto basicamente por esp?cies herb?ceas com car?ter invasor, n?o contendo sementes de esp?cies arbustivo-arb?reas, logo, n?o ? recomendada a recupera??o dessas ?reas utilizando o banco de sementes local. No ensaio com doses do glyphosate, concluiu-se que tr?s das quatro esp?cies florestais avaliadas possuem caracter?sticas que indicam toler?ncia ao herbicida testado, por?m, recomenda-se a realiza??o de testes em campo em est?dios alternativos de desenvolvimento. Na compara??o de m?todos de controle das gram?neas, embora n?o observadas diferen?as entre os herbicidas aplicados, parcelas tratadas com glyphosate apresentaram emerg?ncia de esp?cies presentes no banco ed?fico ao passo que nas parcelas tratadas com paraquat somente foram observadas brota??es. De modo geral, pr?ticas no controle qu?mico das plantas daninhas gram?neas devem ser adotadas para que a ?rea atinja a plena restaura??o. Recomenda-se a inclus?o de outras t?cnicas de recupera??o para que haja a entrada de esp?cies arb?reas adaptadas ao local. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT The objective of this study was to evaluate the impact of herbicide use in regeneration and in the seed bank in areas where the recovery process.?Thus, we developed three of four experiments in a field environment and in a protected environment.?In the first experiment, we evaluated the infestation of exotic grasses on the natural regeneration process.?In the second, we evaluated the influence of the seed bank in the process of restoration of areas infested with grassy weeds.?In the third study, we evaluated the sensitivity of some tree species native to the action of the herbicide glyphosate and the fourth and final experiment evaluated the effect of the herbicide paraquat and control of invasive grasses in degraded areas, compared to mowing, aiming at adapting the?most efficient methods to control weeds.?We could see that from a weed coverage above 50% for the reverse process of natural regeneration, however, there is a group of plants able to colonize this area.?It was also found that the seed bank is composed primarily of herbaceous species with character attacker, not containing seeds of woody species, so is not recommended for rehabilitation of these areas using the local seed bank.?In the trial in doses of glyphosate, it was concluded that three of four forest species evaluated possess characteristics that indicate tolerance to the herbicide tested, however, recommends-if achievement of field tests in stadiums alternative development.?In the comparison of methods for control of grasses, although no significant differences between the herbicides, glyphosate treated plots showed emergence of edaphic species present in the bank while in plots treated with paraquat only shoots were observed.?Overall, practices in the chemical control of grass weeds should be taken to the area to reach the full restoration.?It is recommended the inclusion of other recovery techniques so that there the entry of tree species locally adapted.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-23T14:01:55Z No. of bitstreams: 5 7.pdf: 11015132 bytes, checksum: 0a2a0824ce976c86d274a0563f3f447c (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-10T13:11:09Z (GMT) No. of bitstreams: 5 7.pdf: 11015132 bytes, checksum: 0a2a0824ce976c86d274a0563f3f447c (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-10T13:11:09Z (GMT). No. of bitstreams: 5 7.pdf: 11015132 bytes, checksum: 0a2a0824ce976c86d274a0563f3f447c (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2012 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / O objetivo deste trabalho foi avaliar a influ?ncia de ambientes, substratos, prog?nies e proced?ncias na emerg?ncia e crescimento de pl?ntulas de pequi. O experimento foi conduzido nos ambientes casa de vegeta??o, casa de sombra e c?u aberto, onde foram avaliadas diferentes matrizes dentro dos substratos S1(terra de subsolo de textura m?dia), S2(70% de vermiculita e 30% de moinha de carv?o) e S3 (30% de moinha de carv?o, 50 % de vermiculita e 20% de areia). Os dados de germina??o foram analisados pelo teste de qui-quadrado para independ?ncia, enquanto as vari?veis de di?metro e altura de pl?ntulas pela an?lise de vari?ncia. Os resultados foram significativos (p<1%) para prog?nies, substratos e ambientes em rela??o ? taxa de emerg?ncia. O substrato S1 e o ambiente c?u aberto obtiveram os maiores percentuais de emerg?ncia de pl?ntulas (7,54% e 7,59%), j? o substrato S1 dentro da casa de sombra foi a intera??o que proporcionou o melhor resultado (12,61%). A emerg?ncia se correlacionou positivamente com a densidade e temperatura dos substratos e negativamente com sua capacidade de reten??o de ?gua, al?m de ser inversamente proporcional ? press?o de vapor d??gua do ambiente. O substrato S3 e a casa de vegeta??o contribu?ram isoladamente para as maiores m?dias de di?metro do coleto e altura de pl?ntulas, sendo sua intera??o significativamente superior ?s demais combina??es de substratos e ambientes para a vari?vel altura. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT The objective of this study was to evaluate the influence of environments, substrates, progenies and provenances in the emergence and seedling growth of pequi. The experiment was conducted in a greenhouse environment, the shade and open air, where they were evaluated in different matrices of the substrates S1 (subsoil texture average), S2 (70% vermiculite and 30% charcoal powder) and S3 (30% of charcoal powder, vermiculite 50% and 20% sand). The germination data were analyzed by chi-square test for independence, while the variables of diameter and height of seedlings by analysis of variance. The results were significant (p <1%) for progeny, substrates and environments in relation to the rate of emergence. The substrate S1 open and the environment had the highest percentage of seedling emergence (7.54% and 7.59%), since the substrate S1 within the shade was the interaction that yielded better results (12.61%) . The emergence of positively correlated to the density and temperature of the substrate and negatively with their ability to retain water, and is inversely proportional to the pressure of water vapor from the environment. The substrate S3 and greenhouse alone contributed to the higher average stem diameter and height of seedlings, and their interaction significantly superior to other combinations of substrates and environments for the variable height.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-23T14:01:55Z No. of bitstreams: 5 8.pdf: 931948 bytes, checksum: c8af449a7e2af0f985773f75175b5354 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-10T13:12:26Z (GMT) No. of bitstreams: 5 8.pdf: 931948 bytes, checksum: c8af449a7e2af0f985773f75175b5354 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-10T13:12:26Z (GMT). No. of bitstreams: 5 8.pdf: 931948 bytes, checksum: c8af449a7e2af0f985773f75175b5354 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2012 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / O presente trabalho teve como objetivo avaliar as estimativas de produ??o de biomassa, conte?do de nutrientes total na parte a?rea e do tronco das ?rvores, em resposta a diferentes intensidades de desbaste e a fertiliza??o p?s-desbaste em um povoamento de clones de eucalipto. Foi instalado um experimento em povoamento clonal de eucalipto na empresa ArcellorMittal BioFlorestas, em Martinho Campos, MG. O experimento constituiu-se em um delineamento em blocos casualizados, com dois blocos, quatro intensidades de desbaste (0, 20, 35 e 50%), com e sem fertiliza??o p?s-desbaste. A idade t?cnica de desbaste foi determinada pelo m?todo dos ingressos percentuais, sendo realizada aos 89 meses e a fertiliza??o p?s-desbaste determinada pelo m?todo de exporta??o de nutrientes aos 107 meses. A an?lise dos dados foi feita aos 36 meses ap?s o desbaste e 18 meses ap?s a fertiliza??o. Verificou-se que o m?todo dos ingressos percentuais foi adequado do ponto de vista biol?gico para estimar a idade t?cnica do primeiro desbaste. O desbaste proporcionou maior influ?ncia na produ??o florestal, em rela??o ? fertiliza??o. O desbaste influenciou significativamente o crescimento do di?metro, da ?rea basal, do volume e da biomassa por hectare. A altura total e a altura de copa n?o diferenciaram estatisticamente dentre os tratamentos de desbastes. A fertiliza??o realizada aos 18 meses p?s-desbaste n?o afetou o crescimento e a produ??o das vari?veis de povoamento analisadas. N?o houve diferen?a estat?stica da efici?ncia de uso dos nutrientes em rela??o ?s intensidades de desbaste e ? fertiliza??o p?s-desbaste. Observou-se rela??o positiva entre conte?do de nutrientes e produ??o de mat?ria seca. O ac?mulo de nutrientes para o conte?do total na parte a?rea e no tronco foi proporcional ? intensidade de desbaste, sendo que o conte?do reduziu ? medida que aumentou a intensidade de desbaste, e n?o foi afetado significativamente pela fertiliza??o p?s-desbaste. O ac?mulo de serrapilheira no solo n?o foi alterado significativamente em rela??o ?s intensidades de desbaste e ? fertiliza??o p?s-desbaste; j? o conte?do de nutrientes, apresentou diferen?a estatisticamente significativa para o efeito desbaste apenas para o c?lcio e para efeito fertiliza??o para pot?ssio, c?lcio, magn?sio e enxofre. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT This study aimed to evaluate the estimates of biomass production and nutrient in response to different intensities of thinning and fertilization after thinning in a stand of eucalypt clones. The experiment was installed in area owned by company ArcelorMittal BioFlorestas, in Martinho Campos, MG. The experiment consisted in a randomized block design, with two blocks, four thinning intensities (0, 20, 35 and 50%), with and without fertilizer after thinning. The technique age of thinning was determined by the percentage of entries method, being performed at 89 months and fertilization after thinning determined by nutrient export to 107 months. Data analysis was performed at 36 months after thinning, and 18 months after fertilization. Thinning provided greater influence on forest production in relation to fertilization. It was found that the percentage of entries method was adequate biologically to estimate technical age of first thinning. Thinning influenced the growth in diameter, basal area, volume and biomass per hectare. The total height and crown height did not differ statistically among the thinning treatments. Fertilization performed at 18 months after thinning did not affect the growth and yield of stand variables analyzed. There was no statistical difference in the efficiency of nutrient use in relation to the intensities of thinning and fertilization after thinning. There was positive relationship between nutrient content and dry mass production. The accumulation of nutrients to the total content in the of above ground and the stem was proportional to the intensity of thinning, and reduced content increased as the intensity of thinning, and was not affected by fertilization after thinning. The accumulation of litter on the ground has not changed significantly since the intensities of thinning and fertilization after thinning, whereas the content of nutrients showed statistically significant effect thinning only for calcium and effect fertilization for potassium, calcium, magnesium and sulfur.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-23T14:01:56Z No. of bitstreams: 5 9.pdf: 841416 bytes, checksum: d2cb51c094952589e1262227a5e63e23 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-10T13:14:02Z (GMT) No. of bitstreams: 5 9.pdf: 841416 bytes, checksum: d2cb51c094952589e1262227a5e63e23 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-10T13:14:02Z (GMT). No. of bitstreams: 5 9.pdf: 841416 bytes, checksum: d2cb51c094952589e1262227a5e63e23 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2012 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / O decl?nio da minera??o de diamante na regi?o de Diamantina-MG e entorno, com a interrup??o das buscas e o gradativo esgotamento das minas em opera??o, est? proporcionando a descoberta e a explora??o de maci?os de quartzito, o que ocasiona a degrada??o da vegeta??o existente e do solo, criando um ambiente bastante in?spito ao crescimento de plantas. Este trabalho objetivou caracterizar o rejeito proveniente de ?reas de minera??o de quartzito no munic?pio de Diamantina-MG e entorno, por meio da avalia??o qu?mica e granulom?trica dos rejeitos, bem como avaliar o comportamento de Brachiaria brizantha, Vetiveria zizanioides, Eremanthus erythropappus, Solanum lycocarpum e Dalbergia miscolobium, sob a influ?ncia da aduba??o mineral e org?nica quando cultivada em rejeito da minera??o de quartzito, para apoiar a recupera??o dessas ?reas de explora??o. Para tanto foram montados seis experimentos: no primeiro, foram coletadas 27 amostras compostas, cuidadosamente homogeneizadas, secas ao ar e passadas em peneira de malha de 2,0mm, para posterior caracteriza??o qu?mica e granulom?trica, sendo determinado para cada vari?vel o teor m?nimo, m?ximo, m?dio e mediano; com intervalo de confian?a a 5% para m?dia e coeficiente de varia??o e um estudo da frequ?ncia de ocorr?ncia de resultados por faixa de classifica??o de interpreta??o da fertilidade do solo. Os demais experimentos foram realizados em condi??es de casa de vegeta??o, tiveram os tratamentos dispostos em delineamento inteiramente casualizado, com cinco combina??es de aduba??o org?nica (AO) e aduba??o mineral (AM) e um tratamento adicional (Controle), com quatro repeti??es. Para as forrageiras de cobertura, a dose recomendada de 100% AM (NPK) e AO (esterco de curral) corresponderam a 50kg ha-1 N, 50kg ha-1 P2O5, 40kg ha-1 K2O e 10 t ha-1 esterco bovino, por dm? de rejeito, sendo avaliados a produ??o total de mat?ria seca, os teores e os conte?dos de nutrientes na parte a?rea e nas ra?zes. Para as esp?cies nativas, a dose recomendada de 100% AM (NPK) e AO (esterco bovino) correspondeu a 150mg de N, 140mg de P, 150mg de K e 5g de esterco, por dm? de rejeito, sendo avaliadas as seguintes vari?veis: altura das mudas, di?metro do caule, massa seca da parte a?rea e de ra?zes, e teor de nutrientes na parte a?rea das mudas. As amostras de rejeito analisadas apresentaram baixos teores de mat?ria org?nica, P, K, Ca e Mg e alta acidez. Os rejeitos apresentaram granulometria que dificulta o crescimento do sistema radicular de plantas, o que indica s?rias restri??es ao estabelecimento de esp?cies vegetais. A B. brizantha cv. Marandu respondeu ? aduba??o mineral e org?nica com as doses recomendadas de 37kg N, 37kg P2O5, 30kg K2O e 2,6t esterco de curral por ha. Enquanto Vetiveria zizanioides respondeu ? aduba??o mineral com as doses correspondentes de 50kg N, 50kg P2O5 e 40kg K2O por ha. Houve resposta das mudas de Eremanthus erythropappus ? aduba??o mineral e org?nica com as doses recomendadas de 0,075g N, 0,35g P2O5 e 0,125g K2O e 2,5g esterco de curral por dm? de rejeito de quartzito. A esp?cie nativa Solanum lycocarpum tamb?m respondeu ? aplica??o da aduba??o org?nica e mineral com as doses recomendadas de 0,036g N, 0,168 g P2O5 e 0,060g K2O e 2,5g esterco de curral por dm? de rejeito de quartzito. J? Dalbergia miscolobium respondeu somente ? aduba??o mineral com as doses recomendadas de 25mg N, 25mg P2O5, 20mg K2O por dm? de rejeito. A aduba??o org?nica e mineral recomendada para aplica??o ao rejeito de quartzito para m?ximo crescimento das mudas e produ??o de mat?ria seca possibilitou obter os teores adequados de nutrientes na parte a?rea das esp?cies estudadas. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT The decline in diamond mining in the region of Diamantina-Minas Gerais and its surroundings, with the interruption of the searches and the gradual exhaustion of the mines in operation, is providing the discovery and exploitation of massive quartzite, which causes the degradation of existing vegetation and soil,?creating an environment very inhospitable to plant growth.?This study aimed to characterize the waste from mining areas of quartzite in Diamantina-Minas Gerais and its surroundings, through the evaluation of particle size and chemical wastes, as well as to evaluate the behavior of Brachiaria brizantha, Vetiveria zizanioides, Eremanthus erythropappus, Solanum lycocarpum Dalbergia miscolobium beneath the influence of mineral and organic fertilizer when grown on tailings from mining of quartzite, to support the recovery of these areas of exploration. Therefore, it were assembled six experiments: in the first, 27 composite samples were collected, carefully homogenized, air dried and passed through sieve mesh of 2.0mm for subsequent chemical characterization and particle size was determined for each variable the minimum, maximum, mean and median, confidence interval at 5% for mean and coefficient of variation and a study of the occurrence frequency of results by range of classification for interpretation of soil fertility. Other?experiments were conducted in?greenhouse?conditions,?treatments?were arranged in?completely randomized design?with five?combinations of?organic manure (OM)?and mineral fertilization (MF) and an additional treatment (Control), with four replications. For?forage?coverage,?the recommended dose of?100% MF?(NPK) and OM (manure bovine) corresponded to 50kg ha-1 N, 50kg ha-1 P, 205,40kg K, 20 ha-1 and 10t ha-1 manure by dm??of tailings, and?evaluated?the total production of?dry matter contents?and?nutrient contents?in shoots?and roots. ?For native species, the recommended dose of 100% MF (NPK) and OM (manure) corresponded to 150 mg of N, 140mg P, 150mg K and 5g of dung per dm? of tailings, and evaluated the following variables:?seedling height, stalk diameter, dry mass of shoots and roots, and nutrient contents in shoots of seedlings.?The tailings samples presented low levels of organic matter, P, K, Ca and Mg and high acidity. The tailings particle size showed that hinder the growth of the root system of plants, which indicates serious restrictions on the establishment of plant species. B. brizantha cv. Marandu responded to mineral and organic fertilization with the recommended dose of 37kg N, 37kg P2O5, 30 kg K2O and 2.6 t farmyard manure per hectare. While Vetiveria zizanioides responded to manuring with corresponding doses of 50kg N, 50kg P2O5 and 40 kg K 2O per ha. There was response of seedlings Eremanthus erythropappus at the mineral and organic fertilization with the recommended doses of 0.075 g N, 0.35 g P2O5 and K2O 0.125 g and 2.5 g manure per dm? of tailings quartzite. The native species Solanum lycocarpum also responded to the application of organic and mineral fertilization with the recommended doses of 0.036g N, 0.16 g P 2O5 and K2O 0.060g and 2.5g manure per dm? of tailings quartzite. Have Dalbergia miscolobium responded only to the mineral fertilizer with the recommended doses of 25 mg N, P2O5 25mg, 20mg by K 2O dm? of tailings. The organic and mineral fertilization recommended for application to reject quartzite for maximum plant growth and dry matter production allowed to obtain appropriate levels of nutrients in the shoots of the species.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T13:30:35Z No. of bitstreams: 5 40.pdf: 671743 bytes, checksum: 01827bc0544b1bc747825b4da796144b (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T16:26:30Z (GMT) No. of bitstreams: 5 40.pdf: 671743 bytes, checksum: 01827bc0544b1bc747825b4da796144b (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-27T16:26:30Z (GMT). No. of bitstreams: 5 40.pdf: 671743 bytes, checksum: 01827bc0544b1bc747825b4da796144b (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2012 / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes) / Esse trabalho foi desenvolvido com os objetivos de avaliar a toler?ncia de gram?neas forrageiras e a absor??o, ac?mulo e disponibilidade no solo de c?dmio (Cd). Os experimentos foram instalados em condi??es de casa de vegeta??o do Departamento de Agronomia da Faculdade de Ci?ncias Agr?rias da Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina (MG). As forrageiras estudadas foram: Panicum maximum cv. Aruana e cv. Tanz?nia e Brachiaria decumbens cv. Basilisk, Brachiaria brizantha cv. Xara?s e cv. Marandu e as doses de Cd foram 0, 5, 10 e 20 mg L-1 de solu??o nutritiva e 0, 2, 4 e 12 mg kg-1 de solo. O delineamento experimental foi inteiramente casualizado, com quatro repeti??es, sendo o per?odo experimental de 90 dias, em ambos os experimentos. Determinou-se a massa seca e os teores de Cd na parte a?rea, colmo e ra?zes das forrageiras. Os conte?dos de Cd foram calculados com base nos teores e nas produ??es de massa seca em cada parte da planta. No caso do experimento em solo, para avalia??o do teor de Cd foram utilizados os extratores Mehlich-1, DTPA pH 7,3, teor semitotal - USEPA 3051 e teor total - USEPA 3052. O crescimento relativo das forrageiras foi reduzido pelas doses de Cd, tanto na solu??o nutritiva quanto no solo, configurando a fitotoxidade do Cd nessas plantas. Por?m a sequ?ncia de suscetibilidade foi diferenciada para os experimentos, sendo a ordem decrescente de suscetibilidade na solu??o nutritiva a seguinte: Aruana > Tanz?nia > Xara?s > Basilisk > Marandu, enquanto no solo a sequ?ncia foi: Marandu > Xara?s > Aruana > Tanz?nia > Basilisk. Essa diferen?a de suscetibilidade ? atribu?da ?s diferentes intera??es das forrageiras com o solo. Em ambos os experimentos o teor de Cd nas forrageiras aumentou em fun??o das doses Cd. Por?m a presen?a de Cd na solu??o nutritiva fez com que o ac?mulo e ?ndice de transloca??o apresentassem resposta diferenciada para as forrageiras. Os extratores Mehlich-1 e DTPA foram eficientes para expressar o crescimento da planta. De toda forma, as forrageiras foram incapazes de limitar a absor??o e transloca??o de Cd, acarretando em toxicidade e redu??o de crescimento e altos teores de Cd em todas as partes da planta, n?o proporcionando barreira ? entrada do Cd na cadeia alimentar. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT This work was carried out in order to evaluate the forage grasses tolerance and the absorption, accumulation and bioavailability of cadmium (Cd) on soil. The experiments were settled under conditions of greenhouse on the Department of Agronomy of the College of Agricultural Sciences of the Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina (MG), Brazil. The forages grasses evaluated were: Panicum maximum cv. Aruana and cv. Tanz?nia and Brachiaria decumbens cv. Basilisk, Brachiaria brizantha cv. Xara?s and cv. Marandu and the four doses of Cd were: 0, 5, 10, and 20 mg l-1 and the nutrients in solution 0, 2, 4 and 12 mg kg-1 for soil, respectively. The experimental design was completely randomized with four replications, and the trial period of 90 days, in both experiments. The dry weight and concentration of Cd in shoots, stems and roots of forages were determined. The Cd content had been calculated based on the dry matter yield and content in each part of the plant. In the soil experiment, to measure the levels of Cd, there had been used the extractors Mehlich-1, DTPA pH 7.3, semi total content - USEPA 3051 and total content - USEPA 3052. The relative growth of the forage grasses was reduced with doses of Cd applied, both in the nutrient solution and on the soil, setting the phytotoxicity of Cd in these plants. However the sequence of susceptibility was different t tohe experiments, the decreasing order of susceptibility in the nutrient solution was: Aruana> Tanzania> Xara?s> Basilisk > Marandu, while in soil the sequence was: Marandu> Xara?s> Aruana> Tanzania> Basilisk. This difference in susceptibility is attributed to the different interactions of forage with soil. In both experiments (soil and nutrient solution) the Cd content in the forage increased due of increasing doses of Cd. Nevertheless the presence of Cd in the nutritive solution has made the accumulation and translocation index differently for the forages. Mehlich-1 and DTPA showed high positive correlation with relative growth of forages. The forages were unable to limit the absorption and translocation of Cd, resulting in toxicity and declining growth and high levels of Cd in all parts of the plant, providing no barrier to entry of Cd into the food chain.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T13:30:35Z No. of bitstreams: 5 45.pdf: 345535 bytes, checksum: c3649a3cfc01189e92c6e9258cbcfc4a (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T18:12:58Z (GMT) No. of bitstreams: 5 45.pdf: 345535 bytes, checksum: c3649a3cfc01189e92c6e9258cbcfc4a (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-27T18:12:58Z (GMT). No. of bitstreams: 5 45.pdf: 345535 bytes, checksum: c3649a3cfc01189e92c6e9258cbcfc4a (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2013 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes) / O Brasil possui imensas ?reas de pastagens e a esp?cie mais cultivada ? a Brachiaria brizantha. O controle das plantas daninhas nestas ?reas ? realizado predominantemente pelo uso de herbicidas com longo per?odo residual, destacando-se o picloram. Este ? utilizado no controle de plantas daninhas de folhas largas perenes e tem sido intensamente pesquisado em fun??o da alta meia vida nos solos, sendo sua persist?ncia dependente do clima e atributos ed?ficos, como textura e pH. Objetivou-se com este trabalho avaliar o desenvolvimento e o potencial remediador de B. brizantha em solo contaminado com picloram em diferentes n?veis de pH. O delineamento experimental utilizado foi em blocos casualizados, com quatro repeti??es e com faixa de pH variando entre 4,5 e 5,6. Cultivou-se a forrageira at? a flora??o, quando se determinou a massa da mat?ria seca dos componentes da planta e posteriormente, cultivou-se plantas de pepino como indicadores da presen?a do herbicida. O picloram causou redu??o no ac?mulo da massa da mat?ria seca total das plantas de B. brizantha, em consequ?ncia do efeito negativo sobre a produ??o de ra?zes, independente do pH do solo. Nas folhas o herbicida promoveu redu??o na massa da mat?ria seca em solo com maior pH. Nos tratamentos com maior valor de pH, na profundidade de 35 cm, constatou-se maior ac?mulo de massa da mat?ria seca de ra?zes quando n?o se aplicou o herbicida, indicando que em solos menos ?cidos o herbicida tende a prejudicar o desenvolvimento de ra?zes da forrageira em maiores profundidades. A B. brizantha reduziu a concentra??o de picloram na camada superficial de solo, o que pode ser atribu?do a sua capacidade de degradar o herbicida e tamb?m ao fato desta absorver e exsudar o herbicida ao longo das camadas de solo. Observou-se tamb?m que em solos com maiores valores de pH o herbicida tem maior potencial de lixivia??o, principalmente quando n?o cultivado com B. brizantha. Solos com menores valores de pH tendem ? maior sor??o do herbicida, e consequentemente, a maior concentra??o do mesmo em camadas intermedi?rias. Pode-se concluir que altas concentra??es de picloram no solo s?o nocivas ao crescimento da B. brizantha, principalmente sob condi??es de solos menos ?cidos e esta forrageira pode ser usada para remedia??o de solos contaminados por picloram e na preven??o de sua lixivia??o, que ? maior em solos tratados com calc?rio. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2013. / ABSTRACT Brazil has vast areas of pasture and the specie most widely cultivated is Brachiaria brizantha. The weed control in these areas is carried out predominantly using herbicides of long residual period, highlighting the picloram. This herbicide is used for weed control broadleaf evergreen and has been intensively investigated due to the high half-life in soil, and their persistence dependent on climate and soil attributes such as texture and pH. The aim of this work was to evaluate the development and potential remediation of B. brizantha in soil contaminated with picloram at different pH levels. The experimental design was a randomized block with four replications and pH among 4.5 and 5.6. The forage was grown up to flowering, when determined the dry weight of the plant components and subsequently were cultivated cucumber plants such as bioindicators of presence of the herbicide. The picloram caused reduction of total dry matter accumulation of B. brizantha, consequently to negative effect on root production, regardless soil pH. The herbicide caused a reduction of leaf dry matter on plants cultivated in higher soil pH. In treatments of high pH value at a depth of 35 cm, there was greater accumulation of dry matter of roots when the herbicide was not applied, indicating that in less acid soils the herbicide tends to hinder the development of grass root at greater depths. B. brizantha reduced picloram concentration in the soil shallow layer, which can be attributed to its ability of degrade the herbicide, and also by fact of absorption and exudation herbicide along the soil layers. In higher pH soils also observed that ??the herbicide has higher potential for leaching, mainly when not cultivated B. brizantha. Soils with lower pH values ??tend to greater sorption of the herbicide, and consequently, a higher concentration of the same in the intermediate layers. Concluded that high concentrations of picloram in the soil are harmful to the growth of B. brizantha, mainly under conditions of soils less acidic and this forage can be used for remediation of soils contaminated by picloram and preventing leaching, which is greater in soils treated with lime.