Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2014-12-23T13:26:11Z No. of bitstreams: 2 miguel_henrique_rosa_franco.pdf: 3229498 bytes, checksum: 5346f423862fd89b1962550c0c0f329b (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2014-12-23T13:26:48Z (GMT) No. of bitstreams: 2 miguel_henrique_rosa_franco.pdf: 3229498 bytes, checksum: 5346f423862fd89b1962550c0c0f329b (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2014-12-23T13:26:42Z (GMT) No. of bitstreams: 2 miguel_henrique_rosa_franco.pdf: 3229498 bytes, checksum: 5346f423862fd89b1962550c0c0f329b (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2014-12-23T13:27:55Z (GMT) No. of bitstreams: 2 miguel_henrique_rosa_franco.pdf: 3229498 bytes, checksum: 5346f423862fd89b1962550c0c0f329b (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Made available in DSpace on 2014-12-23T13:27:55Z (GMT). No. of bitstreams: 2 miguel_henrique_rosa_franco.pdf: 3229498 bytes, checksum: 5346f423862fd89b1962550c0c0f329b (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Previous issue date: 2013 / 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 a fitorremedia??o proporcionada pelo cultivo de Brachiaria brizantha, cv. Piat?, em solos contaminados pelo picloram, determinando a sua influ?ncia nas caracter?sticas fisiol?gicas e vegetativas do feijoeiro, utilizada como planta bioindicadora. Para isso, foram realizados dois experimentos, sendo o primeiro composto pela aplica??o de diferentes doses do herbicida picloram (0; 7,5; 15; 30; 60 e 120 g ha-1) onde cultivou-se Brachiaria brizantha, cv. Piat? (esp?cie fitorremediadora) por um per?odo de 150 dias. O segundo experimento constou da perman?ncia de Brachiaria brizantha, cv. Piat? nos solos em diferentes per?odos de cultivo (150, 210, 240, 270 e 300 dias), ap?s a aplica??o da dose de 240 g ha-1 do picloram. O delineamento experimental adotado para os dois experimentos foi o de blocos casualizados, com cinco repeti??es. As avalia??es foram compostas pela verifica??o da altura (cm), massa da mat?ria seca (g) e massa da mat?ria verde (g) das plantas de braqui?ria no ensaio 1, e da massa da mat?ria seca (g) das plantas de braqui?ria para os respectivos per?odos de cultivo propostos no ensaio 2. Para as plantas de feij?o, foram feitas a determina??o aos 50 dias ap?s a semeadura (DAS) das seguintes vari?veis: altura (cm), massa da mat?ria seca (g), massa da mat?ria verde (g), fitotoxicidade (%) aos 25 e 50 dias, ?rea foliar (cm2), n?mero de folhas por planta, efici?ncia fotossint?tica m?xima (Fv/Fm) e a taxa relativa de transporte de el?trons (ETR). Avaliando-se os efeitos tanto na planta fitorremediadora, quanto na bioindicadora, pode-se concluir que a remedia??o proporcionada pelo cultivo da Brachiaria brizantha, cv. Piat? foi efetiva somente quando se aplicou doses inferiores a 60 g ha-1 no solo. Ap?s a aplica??o do picloram, o maior per?odo de cultivo da braqui?ria no solo (300 DAS) proporcionou maior potencial remediador e, consequentemente / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2013. / ABSTRACT The objective of this study was to evaluate the phytoremediation provided by cultivating B. brizantha cv. Piata in soils contaminated by picloram, determining its influence on physiological and vegetative characteristics in beans, used as bioindicator. For this, two experiments were conducted, the first consisting of the application of different doses of the herbicide picloram ( 0 , 7.5, 15 , 30, 60 and 120 g ha - 1 ) which were cultivated Brachiaria Brizantha cv. Piata for a period of 150 days. The second experiment consisted of permanence B. brizantha cv. Piat? on the soil in different periods (150 , 210, 240, 270 to 300 days) after the application of a dose of 240 g ha-1 of picloram. The experimental design for both experiments was a randomized block with five replications. The evaluations were made by measuring the height ( cm ) , dry matter ( g ) and mass of green matter ( g ) of Brachiaria plants in the trial 1 , and dry matter ( g ) of Brachiaria plants for respective periods proposed in the trial 2. For the bean plants, were made evaluations at 50 days after sowing (DAS) of the following variables: plant height ( cm ) , dry matter ( g ) , mass of green matter ( g ) , phytotoxicity ( % ) to 25 and 50 days , leaf area ( cm2 ) , number of leaves per plant , maximum photosynthetic efficiency ( Fv / Fm ) and the relative rate of electron transport (ETR). Evaluating the effects on plants, the phytoremediation, and the bioindicator. It can be concluded that the remediation provided by the cultivation of B. brizantha cv. Piata was effective only when were applied doses below 60 g ha - 1 in the soil. After the application of picloram, the longest period on the soil with brachiaria (300 DAS) provided the greatest potential to remediation and hence improving the physiological and morphological characteristics of the bean.