Submitted by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2017-06-08T18:34:12Z No. of bitstreams: 2 leonardo_palhares_silveira.pdf: 3291160 bytes, checksum: 8416b4ead08288cf32df1bba07b4dbbf (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2017-06-22T15:21:14Z (GMT) No. of bitstreams: 2 leonardo_palhares_silveira.pdf: 3291160 bytes, checksum: 8416b4ead08288cf32df1bba07b4dbbf (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2017-06-22T15:21:14Z (GMT). No. of bitstreams: 2 leonardo_palhares_silveira.pdf: 3291160 bytes, checksum: 8416b4ead08288cf32df1bba07b4dbbf (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2016 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / O uso inadequado do ambiente provoca uma quebra na din?mica natural do ecossistema, prejudicando-o de forma geral todos os elementos que o comp?e. Os espa?os naturais v?m sendo alvo de diversas atividades antr?picas, o que ocasiona uma s?rie de impactos ambientais. Dentre eles pode-se citar os dep?sitos de res?duos s?lidos a c?u aberto, passivos ambientais que necessitam de planos de recupera??o. A presen?a de banco de semente, pl?ntulas, brota??es e vegeta??o potencializam os processos de recupera??o, entretanto, a presen?a de esp?cies ex?ticas com car?ter invasor minimizam o processo devido a sua alta competitividade quando comparadas a esp?cies nativas, sobrevivendo e reproduzindo nas mais diversas condi??es de estresses ambientais. Neste sentido, foi escolhida como ?rea de estudo, o dep?sito de res?duos s?lidos de Diamantina, desativado em 2002, situado no Campus Juscelino Kubitscheck, da Universidade Federal dos Vales do Jequitinhonha e Mucuri, regi?o do Alto Jequitinhonha, Minas Gerais. O presente estudo teve como objetivo avaliar o melhor controle de gram?neas invasoras dos g?neros Melinis e Urochloa por meio de diferentes m?todos: manual, mec?nica, qu?mica e qu?mica + mec?nica, assim como a aplica??o de um m?todo n?o destrutivo, por meio de uso de imagens digitais analisadas pelo software ImageJ para an?lise do comportamento de tais esp?cies na ?rea degradada. Metodologicamente, conduziu-se o experimento por delineamento em blocos casualizados em 4 blocos, subdivididos em 16 parcelas com 4 tratamentos em cada e 4 repeti??es por bloco. A coleta da biomassa de gram?neas regenerantes frescas ocorreu ap?s 100 dias dos m?todos com aux?lio de uma moldura de ferro, com dimens?es de 1,0 x 1,0 m, em tr?s locais predefinidos em cada parcela, totalizando tr?s amostras coletadas por parcela e quarenta e oito amostras por bloco. As imagens utilizadas para an?lise e processamento no software ImageJ foram obtidas com a mesma moldura localizada nos locais predefinidos em cada parcela para os 4 blocos experimentais ap?s 100 dias dos diferentes tipos de m?todos. Os dados processados resultaram em uma varia??o entre os diferentes tipos de m?todos empregados. Obteve-se um menor controle na produ??o de biomassa fresca quando se utilizou controle mec?nico, seguido pela combina??o do m?todo mec?nico + qu?mico. Os m?todos qu?mico e manual apresentaram menores valores de produ??o de biomassa fresca enquanto a produ??o de mat?ria seca n?o apresentou diferen?a significativa estatisticamente. Os dados processados pelo software resultaram em n?tida varia??o entre os m?todos utilizados, com menor porcentagem de cobertura do substrato pelas esp?cies invasoras quando se utilizou controle qu?mico, seguido pelo m?todo manual. O m?todo mec?nico e tratamento qu?mico + mec?nico apresentaram os maiores percentuais de cobertura das esp?cies invasoras estatisticamente. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2016. / The environment for the inappropriate use causes a break in the natural dynamics of the ecosystem, damaging it in general all the elements that compose it. Natural spaces come target of various human activities, which causes a number of environmental impacts. Among them we can mention the deposits of solid waste in the open, environmental liabilities that require recovery plans. The presence of seed bank, seedlings, shoots and vegetation in enhancing the recovery process, however, the presence of exotic species with invasive character minimize the process due to its high competitiveness when compared to native species, surviving and reproducing in various conditions environmental stresses. In this sense, it was chosen as the study area, the solid waste open dumping site of Diamantina town, disabled in 2002, located in the Campus Juscelino Kubitschek of the Federal University of Jequitinhonha and Mucuri Valleys, Upper Jequitinhonha Valley, Minas Gerais. This study aimed to evaluate the best control invasive grasses the Melinis and Urochloa genres through different methods: manual, mechanical, chemical and chemical + mechanical, as well as the application of a non-destructive method, through use of images digital analyzed by ImageJ software for analysis of such kinds of behavior in the degraded area. Methodologically, the experiment was conducted by a randomized block design in 4 blocks, divided into 16 plots with 4 treatments each and 4 replicates per block. The gathered of fresh biomass regenerating grasses occurred after 100 days of weeding with the help of a 1.0 x 1.0 m iron frame in three pre-defined locations in each plot, with three samples per plot and forty and eight samples per block. The images used for analysis in ImageJ software and processing were obtained with the same frame located at the predefined locations in each plot for experimental 4 block after 100 days the different methods. The processed data resulting in a variation between the different types of methods employed. It was obtained less control in the production of fresh biomass when using mechanical control, followed by combining the mechanical + chemical method was obtained. Chemical and manual methods had lower fresh biomass production values while the production of dry matter did not show statistically significant difference. The data processed by the software resulted in a sharp variation in the methods used, with a lower percentage of substrate coverage by invasive species when using chemical control, followed by the manual method. The mechanical method and chemical + mechanical treatment showed the highest percentage of coverage of invasive species statistically.