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.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T13:30:30Z No. of bitstreams: 5 12.pdf: 206095 bytes, checksum: cc4780485101f7822cd4b8735089f132 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20904 bytes, checksum: e09bf99e64678e4285abf3ef3e05412d (MD5) license_rdf: 23422 bytes, checksum: b145eda3d84bdc4f56b389c0ab98d368 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T14:43:08Z (GMT) No. of bitstreams: 5 12.pdf: 206095 bytes, checksum: cc4780485101f7822cd4b8735089f132 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20904 bytes, checksum: e09bf99e64678e4285abf3ef3e05412d (MD5) license_rdf: 23422 bytes, checksum: b145eda3d84bdc4f56b389c0ab98d368 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-27T14:43:08Z (GMT). No. of bitstreams: 5 12.pdf: 206095 bytes, checksum: cc4780485101f7822cd4b8735089f132 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20904 bytes, checksum: e09bf99e64678e4285abf3ef3e05412d (MD5) license_rdf: 23422 bytes, checksum: b145eda3d84bdc4f56b389c0ab98d368 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2010 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / O trabalho foi realizado com o objetivo de conhecer os efeitos promovidos pelo manejo da aduba??o verde na forma de pr?-cultivo com a crotal?ria, aliado a doses de esterco bovino, no desempenho da cultura do milho. O experimento foi desenvolvido na ?rea da Escola Fam?lia Agr?cola de Virgem da Lapa, no munic?pio de Virgem da Lapa-MG, no per?odo de dezembro de 2008 a junho de 2009. Foi adotado o delineamento experimental de ?blocos ao acaso?, apresentando quatro repeti??es, com os tratamentos correspondendo a pr?-cultivo com crotal?ria e seis doses de esterco bovino e uma testemunha (pousio). A crotal?ria foi usada na forma de pr?-cultivo. Antes da implanta??o do experimento, com a semeadura da crotal?ria, foi feita uma capina manual e efetuada a calagem. Ap?s 99 dias, com a ro?agem da crotal?ria e da vegeta??o espont?nea (pousio), o milho foi implantado. As doses de esterco bovino foram parceladas em 50% no plantio e 50% em cobertura. Quantificou-se a mat?ria fresca e seca (t ha-1) do adubo verde, al?m da composi??o em macronutrientes. Foi estimada a contribui??o da fitomassa de crotal?ria na reten??o da umidade no solo, na temperatura do solo, na capacidade de abafamento da vegeta??o espont?nea, e determinada a composi??o em macronutrientes. A cultura do milho foi colhida em est?gio verde, procedendo-se as avalia??es: n?mero de folhas, altura das plantas e da inser??o da espiga (m), comprimento e di?metro da espiga (cm), acumula??o de mat?ria fresca e seca (t ha-1) nas plantas de milho, gr?os, palha e sabugo do milho, e produtividade (n?mero de espigas ha-1). Foram determinados os teores de macronutrientes e a quantidade acumulada (kg ha-1) na parte a?rea das plantas do milho. A crotal?ria apresentou grande potencial para uso na aduba??o verde, com grande ac?mulo de fitomassa seca e nutrientes. As ?reas cobertas com res?duos de crotal?ria apresentaram maior reten??o de ?gua no solo e redu??o na temperatura ao longo do seu perfil. A presen?a da fitomassa de crotal?ria promoveu redu??o no crescimento de plantas espont?neas, com 76,13% menos massa seca acumulada, durante o ciclo do milho, al?m de mudan?a na composi??o flor?stica das ?reas, com a redu??o do n?mero de esp?cies presentes, em seis esp?cies a menos que no cultivo em solo com pousio. A crotal?ria, independente da dose de esterco aplicada, influenciou o desenvolvimento vegetativo e produtivo do milho, promovendo as maiores alturas de plantas e de inser??o da espiga, maior n?mero de folhas, valores de mat?ria verde e seca para as plantas inteiras, gr?os, palhas da espiga e sabugo. O mesmo foi observado para os par?metros produtivos de di?metro, comprimento e produtividade de espigas de milho em est?dio verde. As plantas de milho crescidas nas ?reas pr?-cultivadas com crotal?ria apresentaram valores superiores quanto aos teores de N e P. De forma geral, a fitomassa da crotal?ria pr?-cultivada ao milho supriu as exig?ncias da cultura, demonstrando o potencial de substitui??o ao uso do esterco bovino, como fertilizante alternativo. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2010. / ABSTRACT This work aimed to identify the effects promoted by the management of green manure in pre-cultivation with C. juncea, using doses of manure, on the performance of corn cultivation. The experiment was carried out at the Agricultural Family School of Virgem da Lapa, in the town of Virgem da Lapa-MG from December, 2008 to June, 2009. A randomized trial of "randomized block", with four replications, with treatments corresponding to pre-cultivation with crotalaria and six doses of manure and a control (resting). The crotalaria was submitted pre-cultivation. Before the implementation of the experiment, with the cultivation of crotalaria, one manual weeding and liming was done. After 99 days, with the rustle of crotalaria and spontaneous vegetation, corn was implanted. The cattle manure were applied with 50% at planting and 50% at coverage. The green manure was quantified in the fresh and dry matter (t ha-1), as well as composition in macronutrients. It was estimated the contribution of crotalaria biomass in moisture retention of soil, soil temperature, the smoother ability of weeds, and determined the composition of macronutrients. The corn crop was harvested in green stage carrying the evaluations: number of leaves, plant height and ear height (m) length and ear diameter (cm), fresh and dry matter accumulation (t ha-1) in corn, beans, starw and cob, and productivity (number of ears ha-1). The contents of macronutrients and accumulation (kg ha-1) in the shoots of maize. The crotalaria showed great potential for green manure, with accumulation of dry weight and nutrients. Areas covered with crotalaria waste showed higher water retention of soil and reduction in temperature along its profile. The presence of the dry mass of crotalaria decreased the growth of weeds with 76.13% less dry mass accumulated during the entire crop cycle, there were changes in floristic composition of the areas and also a reduction in the number of species, with six species less than in the culture of land fallow. The crotalaria, irrespective of the manure dose applied, influenced plant growth and production of corn, promoting the highest plant height and ear height, increased number of leaves, values of fresh and dry mass for whole plants, grain, straw and cob. The same was observed for the production parameters of diameter, length and yield of corn cobs in the green stage. Corn plants grown in areas pre-cultured with crotalaria showed higher values for the levels of N and P. In general, the biomass of crotalaria pre-grown with corn has met the requirements of culture, demonstrating the potential to replace the use of manure as an alternative fertilizer.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-11-17T11:31:11Z No. of bitstreams: 2 edilson_almeida.pdf: 627105 bytes, checksum: a0b76b2072690c3740d1f97384c5ba3b (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-11-17T11:31:45Z (GMT) No. of bitstreams: 2 edilson_almeida.pdf: 627105 bytes, checksum: a0b76b2072690c3740d1f97384c5ba3b (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Made available in DSpace on 2015-11-17T11:31:45Z (GMT). No. of bitstreams: 2 edilson_almeida.pdf: 627105 bytes, checksum: a0b76b2072690c3740d1f97384c5ba3b (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Previous issue date: 2012 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Objetivou-se com este estudo avaliar o uso de aditivos digestivos (enzimas) e equilibradores da microbiota intestinal (?cidos org?nicos, extratos vegetais, probi?ticos e simbi?ticos) sob os par?metros de desempenho (ganho em peso, consumo de ra??o, convers?o alimentar, viabilidade e ?ndice de efici?ncia europeu), rendimento de carca?a e cortes, qualidade da carne e empenamento de frangos de corte criados com o uso de cama de avi?rio reutilizada. Foram utilizadas 552 aves sexadas, da linhagem Hubbard, com um dia de idade, distribu?das segundo um delineamento inteiramente casualisado com seis tratamentos (controle negativo: dieta controle (DC) sem aditivos; DC + extrato vegetal (alho + or?gano); DC + complexo enzim?tico (protease, amilase e celulase); DC + probi?tico; DC + simbi?tico e DC + ?cidos org?nicos (ac?tico, f?rmico e propi?nico), com quatro repeti??es (duas de macho e duas de f?meas) de 23 aves cada. Os par?metros de desempenho das aves foram avaliados de 1 a 7, 1 a 21, 1 a 35 e 1 a 42 dias de idade. Aos 42 dias, foram abatidas 3 aves de cada parcela experimental para avalia??o do rendimento de carca?a e cortes e dos par?metros de qualidade da carne do peito (capacidade de reten??o de ?gua, valor de pH, perda de peso por cozimento, maciez objetiva e colora??o). O empenamento das aves foi avaliado aos 28 e 35 dias de idade. Houve diferen?as das dietas sobre o ganho em peso das aves de 1 a 21 e de 1 a 35 dias, e as aves suplementadas com a dieta de extrato vegetal apresentaram maior ganho em peso que as aves suplementadas com as dietas de probi?tico e simbi?tico. Durante o per?odo total de cria??o, n?o houve efeito das dietas sobre o rendimento de carca?a e cortes, na qualidade da carne e no empenamento das aves. O sexo afetou o desempenho, rendimento de peito e carne do peito e o empenamento das aves, e os machos apresentaram melhores resultados de desempenho. A viabilidade foi melhor para as f?meas, que tamb?m apresentaram maiores rendimentos de peito e carne do peito e melhor empenamento. Os dados verificados permitem concluir que o uso dos aditivos digestivos e equilibradores da microbiota intestinal n?o afetam o desempenho, o rendimento de carca?a e cortes, a qualidade da carne e o empenamento. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT The objective of this study to evaluate the use of digestive additives (enzymes) and balancing the intestinal microbiota (organic acids, plant extracts, probiotics and symbiotics) on performance parameters (weight gain, feed intake, feed conversion, viabibility and european efficiency index), carcass yield and cuts, meat quality and feathering of broilers, created with the use of reused litter. Five hundred fifty-two sexed birds were used, strain Hubbard, with one day of age, distributed according to a completely randomized design with six treatments (negative control: control diet (CD) without additives; CD + plant extract (garlic + oregano); CD + complex enzyme (protease, amylase and cellulase); CD + probiotic; CD + symbiotic and CD + organic acids (acetic, formic and propionic acids) with four replications (two male and two females) of 23 birds each. Performance parameters were evaluated 1-7, 1-21, 1-35 and 1-42 day-old birds. At 42 days, three birds were slaughtered each plot for evaluation of carcass yield and cuts and parameters of meat quality of breast (water retention capacity, Ph value, cooking weight loss, objective tenderness and coloring). The feathering of the birds was evaluated at 28 and 35 days old. There were differences of diets on weight gain of broilers 1-21 and 1 to 35 days, and broilers supplemented diet with extract plant showed higher weight gain than broilers supplemented diets with probiotic and symbiotic. During the whole period of creation, there was no effect of diets on carcass yield and cuts, meat quality and feather covering. The sex affected performance, breast meat yield and breast meat and feather covering, and the males showed better performance results. The viability, which was better for females, which also showed higher values of breast and breast meat and better bending. Data verified the conclusion that the use of additives and digestive balancing the intestinal microbiota does not affect performance, yield carcass and cuts, meat quality and warping.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-11-18T12:22:40Z No. of bitstreams: 2 graciele_araujo_oliveira.PDF: 736032 bytes, checksum: 8f4728012526a950d2e16deec5ce1e59 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-11-18T12:23:00Z (GMT) No. of bitstreams: 2 graciele_araujo_oliveira.PDF: 736032 bytes, checksum: 8f4728012526a950d2e16deec5ce1e59 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Made available in DSpace on 2015-11-18T12:23:00Z (GMT). No. of bitstreams: 2 graciele_araujo_oliveira.PDF: 736032 bytes, checksum: 8f4728012526a950d2e16deec5ce1e59 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Previous issue date: 2010 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Este trabalho objetivou avaliar o efeito de diferentes aditivos alternativos (alho, saponina, probi?ticos, prebi?ticos, ?cidos org?nicos e complexos enzim?ticos), em substitui??o aos antibi?ticos, sobre os par?metros de desempenho, rendimento de carca?a e cortes, custo de produ??o, empenamento e qualidade da carne de frangos de corte. Foram utilizados 744 pintainhos, sexados, com um dia de idade, da linhagem Cobb 500. As aves foram distribu?das segundo um delineamento inteiramente casualizado com seis tratamentos (T1: ra??o basal (RB) + vacina de coccidiose (VC); T2: RB + antibi?tico + anticoccidiano; T3: RB + ?cidos org?nicos + VC; T4: RB + simbi?tico + VC; T5: RB + complexo enzim?tico + VC eT6: RB + extratos vegetais + VC) com quatro repeti??es de 31 aves. Os tratamentos influenciaram os par?metros de desempenho aos 7, 21 e 35 dias de idade das aves, mas n?o afetaram o desempenho quando considerado o per?odo total de cria??o. O uso de aditivos alternativos aumentou o custo de produ??o, sendo que as dietas contendo simbi?ticos, complexo enzim?tico e extratos vegetais apresentaram maior custo. O empenamento n?o foi afetado pelos tratamentos. O rendimento de carca?a e cortes e as caracter?sticas de qualidade da carne n?o foram afetados pelos tratamentos avaliados. Com base nos resultados verificados, pode-se concluir que a substitui??o dos antibi?ticos por aditivos alternativos na alimenta??o de frangos de corte, n?o afeta o desempenho final das aves abatidas com 42 dias e n?o alteram o rendimento de carca?a e cortes e a qualidade da carne das aves, mas onera os custos em at? 15%, quando se utiliza aditivos nas dietas. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2010. / ABSTRACT The antibiotics used in animal food to promote growth have been gradually banished due to the possible risk of cross-resistance to drugs used to human therapy. As a result, the search for food without these products is increasing. This study aimed to evaluate the effect of different alternative additives (garlic, saponine, probiotics, prebiotics, and enzymatic complex and organic acids) to substitute antibiotics on parameters of performance, carcass and cuts yield, production cost, feathering and quality of broilers? meat. A total of 744 one day old sexed broilers chicks Cobb 500 line were distributed in 6 treatments (T1: basal diet (BD) + coccidiosis vaccine (CV); T2: BD + antibiotic + anticoccidian; T3: BD + organic acid + CV; T4: BD + symbiotic + CV; T5: BD + enzymatic complex + CV; T6: BD + vegetal extract + CV) under a completely randomized design, with 4 replicates and 31 chicks per experimental unit.Treatments influenced performance at 7, 21 and 35 days old, but they did not affect it when considered the total breeding period. Additives use increased production cost, and diets with symbiotics, enzymatic complex and vegetal extract showed higher cost. Feathering, carcass and cuts yield and meat quality characteristics were not affected by the treatments. Results conclude that substituting antibiotics to additives on broilers food cause performance reduction on feeding initial phase, but it did not affect the final performance, nor carcass and cuts yield or meat quality of chicken slaughtered at 42 days old, but it burdens costs up to 15% when additives are used in diets.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2016-01-05T13:42:22Z No. of bitstreams: 2 uidemar_morais_barral.pdf: 1274629 bytes, checksum: d89bbca6115310a0b5ad8323167ba551 (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2016-01-05T18:01:03Z (GMT) No. of bitstreams: 2 uidemar_morais_barral.pdf: 1274629 bytes, checksum: d89bbca6115310a0b5ad8323167ba551 (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) / Made available in DSpace on 2016-01-05T18:01:03Z (GMT). No. of bitstreams: 2 uidemar_morais_barral.pdf: 1274629 bytes, checksum: d89bbca6115310a0b5ad8323167ba551 (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) Previous issue date: 2015 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes) / A mat?ria org?nica (MOS) do solo consiste de uma mistura de compostos em v?rios est?gios de decomposi??o, resultante da degrada??o biol?gica de res?duos de plantas e animais, e da atividade de microrganismos, denominados subst?ncias h?micas (SHs). Essas subst?ncias fracionadas em ?cidos f?lvicos (AF), ?cidos h?micos (AH) e humina (H), de acordo com sua solubilidade em meio ?cido ou b?sico. Os AH t?m sido usados como fertilizantes aplicados diretamente no solo ou via foliar, principalmente por influenciarem o metabolismo das plantas. Objetivou-se com este trabalho avaliar em feijoeiro (Phaseolus vulgaris L.), a influ?ncia de fontes e doses diferentes de AH, na produ??o, crescimento radicular e absor??o de nutrientes e biodisponibilidade de nutrientes no solo. O experimento foi conduzido utilizando o delineamento em blocos casualizados com 15 tratamentos, sendo estes as fontes de AH (turfa - 1, composto - 2 e produto comercial - 3) e as doses de AH (0, 2, 8, 16 e 32 kg ha-1), com quatro repeti??es. Foram avaliadas: altura das plantas (cm), di?metro do caule (cm), teor de clorofila (?g cm-2) e teor de macro e micronutrientes nas folhas no florescimento do feijoeiro e ao fim do experimento, peso de sementes (g), massa seca da parte a?rea e de ra?zes (g), n?mero de vagem por planta e de sementes por vagem e no solo: pH em ?gua e teores de mat?ria org?nica, P, K, Ca, Mg, Al e H+Al. A aplica??o de AH reduziu o crescimento e produ??o de gr?o, com aumento das doses em cada fonte, seguindo a ordem fonte 3 > fonte 1 > fonte 2. Os teores de P, K, Cu, Fe, Mn e Zn nas folhas foram influenciados pelas doses de todas as fontes de AH. Houve redu??o para maioria dos nutrientes quantificados nas folhas com aumento das doses de AH. Os teores de P e K se elevaram no solo, com a aplica??o de AH. Para condi??es testadas, n?o se recomenda utiliza??o de AH para cultura do feijoeiro. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2015. / ABSTRACT The soil organic matter (SOM) consists of a mixture of compounds in many decomposition stages, the result of biological degradation of residues of plants and animals, and microorganisms activity, called humic substances (HS). These substances are fractionated into fulvic acids (FA), humic acids (HA) and humin (H), according to their solubility in acidic or basic medium. HA have been used as fertilizers directly applied to the soil or via foliar, mainly because they influence plants metabolism. The main goal of this study was evaluating, in bean plant (Phaseolus vulgaris L.), the influence of sources and different doses of HA in production, root growth, nutrients absorption and bioavailability of nutrients in the soil. The experiment was conducted using randomized block design with 15 treatments, which are the sources of HA (peat ? 1, compound ? 2 and commercial product ? 3) and doses of HA (0, 2, 8, 16 e 32 kg ha-1), with four repetitions. Evaluations were made on: plants height (cm), stem diameter (cm), chlorophyll content (?g cm-2) and content of macro and micronutrients in the leaves in the flowering stages and in the end of the experiment, seeds weight (g), dry matter of the aerial part and roots (g), number of pods per plant and seeds per pod, and in the soil: pH in water and contents of organic matter, P, K, Ca, Mg, Al and H+Al. Application of HA reduced bean growth and production, with increase of doses in each source, following order: source 3 > source 1 > source 2. Contents of P, K, Cu, Fe, Mn and Zn in the leaves were influenced by the doses of all HA sources. Most of the nutrients quantified in the leaves were reduced with increasing HA doses. Contents of P and K were increased in the soil with application of HA. For tested conditions, the use of HA for bean culture is not recommended.

Submitted by Nivaldo Melo (nivaldo.melo@ufvjm.edu.br) on 2016-10-11T15:59:27Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) nykolas_carvalho_schiavon.pdf: 680531 bytes, checksum: 657731b79e9a7d7463b7f606d0966018 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2016-10-11T19:34:59Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) nykolas_carvalho_schiavon.pdf: 680531 bytes, checksum: 657731b79e9a7d7463b7f606d0966018 (MD5) / Made available in DSpace on 2016-10-11T19:34:59Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) nykolas_carvalho_schiavon.pdf: 680531 bytes, checksum: 657731b79e9a7d7463b7f606d0966018 (MD5) Previous issue date: 2015 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes) / A adi??o de ?cido c?trico ao substrato pode influenciar a disponibilidade de f?sforo para as plantas de caf? e possibilitar melhor crescimento e nutri??o. Al?m disso, o crescimento e a nutri??o possivelmente sofrer?o influencia da cultivar e do parcelamento de dose do ?cido c?trico. Por isso, objetivou-se avaliar o crescimento e ac?mulo de nutrientes por mudas de caf? (Coffea arabicaL.) de tr?s cultivares: Catua? Vermelho IAC 99, Mundo Novo IAC 379- 19 e Oeiras MG 6851, em substrato tratado com ?cido c?trico e diferentes doses de P2O5. Buscou-se tamb?m verificar o efeito do parcelamento do ?cido c?trico no crescimento e ac?mulo de nutrientes, pelas mudas. Foram instalados dois experimentos, delineados em cinco blocos e esquema fatorial. No primeiro, foram avaliadas as tr?s cultuvares de caf? e quatro doses de P2O5 (0, 450, 900 e 1.800 g m-3) em solo tratato com ?cido c?trico anidro (0,5 mg dm3). No segundo experimento, os fatores foram compostos pelas quatro doses de P2O5 e a dosagem de ?cido c?trico dividida em quatro parcelamentos. As plantas foram submetidas aos tratamentos a partir da emiss?o das primeiras folhas cotiledonares as avalia??es ocorreram ap?s 180 dias (no primeiro experimento) e ap?s 120 dias (no segundo experimento). Foram avaliadas vari?veis de crescimento, ac?mulo de mat?ria seca e nutrientes pelas plantas de caf?. Como resultados verificou-se que as doses de P2O5, em substrato tratado com ?cido c?trico, influenciaram o crescimento das mudas de caf? das cultivares estudadas. O maior crescimento, ac?mulo de biomassa e ac?mulo m?ximo de nutrientes foram na dose de 900 g m-3 de P2O5. Com rela??o ao parcelamento do ?cido c?trico, foi observado melhor crescimento de mudas de caf? quando a dosagem foi parcelada em tr?s e quatro vezes. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2015. / The addition of citric acid to the substrate can influence the availability of phosphorus for plants and coffee allow better growth and nutrition. Additionally, the growth and nutrition possibly suffer influence of genotype and citric acid dose installment. Therefore, this study aimed to evaluate the growth and accumulation of nutrients in coffee seedlings (Coffea arabicaL.) Of three cultivars Catua? Vermelho IAC 99, Mundo Novo IAC 379-19 and Oeiras MG 6851, in substrate treated with citric acid and different of P2O5. It also sought to determine the effect of citric acid installment in the growth and accumulation of nutrients by the plants. Two experiments, outlined in five blocks and a factorial design were installed. At first, they evaluated the three coffee cultuvares P2O5 four doses (0, 450, 900 and 1800 g m-3) tratato soil with anhydrous citric acid (0,5 mg dm-3). In the second experiment, the factors were composed by four doses of P2O5 and citric acid dosage divided into four installments. The plants were subjected to treatment from the issuance of the first cotyledon leaves the evaluations occurred after 180 days (the first experiment) and 120 days (the second experiment). Growth variables were evaluated, dry matter accumulation and nutrients by coffee plants. As a result it was found that doses of P2O5, substrate treated with citric acid, influenced the growth of coffee seedlings of cultivars. The greatest growth, biomass accumulation and maximum nutrient accumulation were at a dose of 900 g m-3 of P2O5. Regarding the installment of citric acid, better growth of coffee seedlings was observed when the dosage was split into three four times.

ALVES, Ana paula Melo. Vermiculitas tratadas quimicamente na obten??o de s?lidos microporosos como precursores para h?bridos inorg?nico-org?nicos com aplica??es adsortivas. 2009. 124 f. Tese (Doutorado em Quimica) - Centro de Ci?ncias Exatas e da Natureza, Universidade Federal da Para?ba, Jo?o Pessoa, PB, 2009. / Submitted by Sonia Leite (sonia@geologia.ufrn.br) on 2010-09-27T16:18:21Z No. of bitstreams: 2 2000Tese_AnaPaulaMAlves.pdf: 2643720 bytes, checksum: 1e6e5bae6c1a2fb7113b073819b6445a (MD5) license_rdf: 19710 bytes, checksum: aa65da15f424ff71c620a992a187295c (MD5) / Rejected by clediane guedes(clediane@bczm.ufrn.br), reason: ALVES dever? est? em mai?sculo on 2010-09-27T18:01:29Z (GMT) / Submitted by Sonia Leite (sonia@geologia.ufrn.br) on 2010-09-27T18:28:33Z No. of bitstreams: 2 2000Tese_AnaPaulaMAlves.pdf: 2643720 bytes, checksum: 1e6e5bae6c1a2fb7113b073819b6445a (MD5) license_rdf: 19710 bytes, checksum: aa65da15f424ff71c620a992a187295c (MD5) / Approved for entry into archive by clediane guedes(clediane@bczm.ufrn.br) on 2010-09-30T12:05:26Z (GMT) No. of bitstreams: 2 2000Tese_AnaPaulaMAlves.pdf: 2643720 bytes, checksum: 1e6e5bae6c1a2fb7113b073819b6445a (MD5) license_rdf: 19710 bytes, checksum: aa65da15f424ff71c620a992a187295c (MD5) / Made available in DSpace on 2010-09-30T12:05:26Z (GMT). No. of bitstreams: 2 2000Tese_AnaPaulaMAlves.pdf: 2643720 bytes, checksum: 1e6e5bae6c1a2fb7113b073819b6445a (MD5) license_rdf: 19710 bytes, checksum: aa65da15f424ff71c620a992a187295c (MD5) / A lixivia??o seletiva de argilominerais ? um m?todo importante na prepara??o de silicatos porosos constituindo-se em uma rota simples, efetiva e de baixo custo. Neste estudo a vermiculita foi submetida a tratamento ?cido com acido n?trico nas concentra??es 1, 2, 3 e 4 mol dm-3, originando os s?lidos precursores denominados VacX (x=1 a 4), respectivamente. As matrizes ativadas e a vermiculita reagiram covalentemente com os organosilanos aminopropil-, propiletilenodiamino-,propildietilenotriamino- e glicid?xipropiltrimetoxissilano (GPTS) atrav?s dos grupos metoxilas do silano e as hidroxilas da superf?cie das matrizes. O h?brido Vac3G, derivado da silaniza??o do Vac3 com GPTS, sofreu rea??es subseq?entes com as diaminas etil, propil, butildiamina e 2-aminopiridina, possibilitando a entrada de novos centros b?sicos. Os diversos s?lidos foram caracterizados por an?lise qu?mica, espectroscopia na regi?o do IV, DRX, RMN 29Si e 27Al, MEV, volume de poro e ?rea superficial. A lixivia??o da vermiculita s?dica originou s?lidos porosos reestruturados com elevadas ?reas superficiais cujos valores foram 133, 334, 673 e 575 m2 g-1 para os s?lidos Vac1, Vac2, Vac3 e Vac4,respectivamente. Independentemente do s?lido, observou-se que ? medida que a lixivia??o se torna mais acentuada, houve um aumento na reatividade das matrizes ativadas em rela??o ? vermiculita original, sendo a matriz Vac3 a mais reativa diante das rea??es aqui propostas. Todos os s?lidos modificados apresentaram altos teores de grupos org?nicos incorporados. A s?rie de vermiculitas modificadas com o grupo aminopropil foi utilizada para a adsor??o de c?tions divalentes de cobre e n?quel em solu??o aquosa, mostrando maior afinidade para os ?ons de Ni2+(aq) do que para Cu2+(aq) como ilustrado pelos valores Nf de 2,97 e 1,23 mmol g-1, respectivamente. Os s?lidos porosos argilosos derivados de tratamento ?cido da vermiculita s?o substratos potenciais para imobiliza??o de silanos apresentando importantes aplica??es como adosrventes para esp?cies poluentes como metais pesados. ABSTRACT: The selective leaching of clay minerals is an important method in the preparation of porous silicates presenting as a simple, effective and low cost route. In this study, vermiculite was submitted to acid treatment at concentrations 1, 2, 3, and 4 mol dm-3, resulting the precursor solids named as VacX (x=1 a 4), respectively. The lixiviated matrices and vermiculite reacted covalently with the organosilanes aminepropyl-, propyletilenediamine-, ropyldietilenetriamine- and glycidoxypropyltrimethoxisilane (GPTS). The hybrid Vac3G, derived from silanization reaction between Vac3 and GPTS, was submitted to subsequent reactions with ethyl, propyl, butyldiamines and 2- aminepiridine resulting in the entrance of new basic centres. The products were characterized by chemical analysis, infrared spectroscopy, X-ray diffraction, 29Si and 27Al NMR in solid state, SEM, and pore volume and surface area determination. The lixiviation of sodic vermiculite originated the restructured porous solids with high superficial area showing the values133, 334, 673 e 575 m2 g-1 for VacX where X = 1,2,3,4, respectively. These solids and sodic vermiculite reacted covalently with each organosilane through methoxyl groups of silane and the hydroxyl surface of matrices. Independently of solid, it was observed that the lixiviation favored the reactivity of activated matrices compared with sodic vermiculite, showing the Vac3 as more reactive comparing with others solids. All modified solids presented high nitrogen content showing the values of 6,31 %. The set of modified vermiculites containing aminepropyl group was applied as adsorbent for divalent cations as copper and nickel in aqueous solution. These solid showed highest affinity for Ni2+ than Cu2+ ions as illustrated by Nf values of 2,97 and 1,23 mmol g-1, respectively. Clay porous solids obtained of leaching treatment of vermiculite are potential substrates for grafting of silanes showing important applications as adsorbents for contaminant species as heavy metals

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-03-03T20:33:06Z No. of bitstreams: 1 VirginiaClaudiaDeLimaMenezes_DISSERT.pdf: 1208323 bytes, checksum: b1e6f942167139cbb5930b457a0c271a (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-03-08T23:06:45Z (GMT) No. of bitstreams: 1 VirginiaClaudiaDeLimaMenezes_DISSERT.pdf: 1208323 bytes, checksum: b1e6f942167139cbb5930b457a0c271a (MD5) / Made available in DSpace on 2016-03-08T23:06:45Z (GMT). No. of bitstreams: 1 VirginiaClaudiaDeLimaMenezes_DISSERT.pdf: 1208323 bytes, checksum: b1e6f942167139cbb5930b457a0c271a (MD5) Previous issue date: 2014-12-19 / O sabi? (Mimosa caesalpiniaefolia Benth.) ? uma esp?cie end?mica do bioma Caatinga, sendo considerada tolerante aos estresses salino e h?drico. O processo de saliniza??o dos solos e das ?guas subterr?neas e superficiais ? um dos mais importantes problemas de degrada??o ambiental, com seus efeitos prejudiciais sendo mais pronunciados nas ?reas de regi?es ?ridas e semi?ridas, e que vem crescendo rapidamente em diversas partes do globo, causando problemas de grandes propor??es na produtividade das culturas agr?colas. Condicionadores org?nicos como esterco de curral e casca de arroz podem contribuir para redu??o da PST, possivelmente em virtude da libera??o de CO2 e produ??o de ?cidos org?nicos, durante a decomposi??o da mat?ria org?nica, al?m de atuarem como fontes de c?lcio e magn?sio e inibirem a disponibilidade do s?dio. A associa??o ?ntima e ben?fica das micorrizas com as plantas resulta no aumento da absor??o de ?gua e nutrientes pelos vegetais, principalmente o f?sforo, devido sua baixa mobilidade no solo. O objetivo deste trabalho foi a avalia??o do crescimento inicial de mudas de sabi? sob inocula??o com fungos micorr?zicos arbusculares, adubadas com esterco de curral e irrigadas com ?gua de diferentes n?veis de salinidade. O experimento foi instalado em condi??es de casa de vegeta??o nas depend?ncias da Escola Agr?cola de Jundia? - UFRN, Campus Maca?ba. O delineamento estat?stico adotado foi o inteiramente casualizado composto de doze tratamentos ? tr?s substratos (solo est?ril, esterco e FMA), quatro n?veis de salinidade (0,2; 1,5; 3,0 e 4,5 dS m-1 ) e cinco repeti??es, totalizando sessenta unidades experimentais. Os resultados indicam que a inocula??o de fungos micorr?zicos possui contribui??es para o crescimento das plantas, sobretudo em ra?zes e parte a?rea, o que sugere que sua aplica??o seja ben?fica no estabelecimento de plantas de sabi? em condi??es naturais, com solo pobre em P. Os n?veis de salinidade n?o causaram efeitos com relev?ncia estat?stica no desenvolvimento das plantas, indicando a resist?ncia do sabi? ? mesma. / The sabi? (Mimosa caesalpiniaefolia Benth.) is an endemic species of the Caatinga biome, considered tolerant to salt and water stress. The process of salinization of soil and groundwater and surface water is one of the most important problems of environmental degradation, with its harmful effects being more pronounced in the areas of arid and semiarid regions, and rapidly growing in many parts of the globe, causing problems of the major crop yield. Organic conditioners as barnyard manure, and rice hulls can contribute to reducing the PST, possibly due to the release of CO2 and the production of organic acids during the decomposition of organic matter, and act as sources of calcium and magnesium and inhibit the availability sodium. The intimate association of mycorrhizae and beneficial to plants results in increased uptake of water and nutrients by plants, especially phosphorus, due to their low mobility in soil. The objective of this study was to evaluate the initial growth of thrush seedlings under inoculation with mycorrhizal fungi and fertilized with manure corral and irrigated with water of different salinity levels. The experiment was conducted in greenhouse conditions of vegetation on the premises of the Agricultural School of Jundia? - UFRN, Campus Maca?ba. The adopted statistical design was randomized composed of twelve treatments - three substrates (sterile soil, manure and FMA), four salinity levels (0.2, 1.5, 3.0 and 4.5 dS m-1 ) and five repetitions, totaling sixty experimental units. The results indicate that inoculation with mycorrhizal fungi own contributions to the growth of plants, especially in roots and shoots, which suggests that its application is beneficial in establishing thrush plants in natural conditions, with poor soil in P. Levels salinity caused no effects with statistical significance in plant development, indicating Sabia resistance to it.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-03-09T23:03:54Z No. of bitstreams: 1 YuriMiguelVariani_DISSERT.pdf: 3175747 bytes, checksum: 334b76f54aeba438cc28f8534c116513 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-03-11T19:15:29Z (GMT) No. of bitstreams: 1 YuriMiguelVariani_DISSERT.pdf: 3175747 bytes, checksum: 334b76f54aeba438cc28f8534c116513 (MD5) / Made available in DSpace on 2016-03-11T19:15:29Z (GMT). No. of bitstreams: 1 YuriMiguelVariani_DISSERT.pdf: 3175747 bytes, checksum: 334b76f54aeba438cc28f8534c116513 (MD5) Previous issue date: 2015-06-10 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / Os estudos realizados neste trabalho t?m como objetivo contribuir ao entendimento dos fatores direcionadores quer est?o envolvidos em uma cristaliza??o de uma estrutura ze?litica. Para alcan?ar tal objetivo, foram sintetizados tr?s novos c?tions org?nicos a base de um anel imidaz?lio: 1,2,3-trietilimidaz?lio (123TEI), 2-etil-1,3- dimetilimidaz?lio (2E13DMI) e 1,2,3-trietil-4-metilimidaz?lio (123TE4MI). Foi avaliando seu car?ter como direcionadores de estrutura (do ingl?s, Structure-Directing Agents - SDAs) na s?ntese de ze?litas puramente sil?cicas em meio fluor?drico. Por sua vez, foi estudado a concentra??o do gel de s?ntese em distintas rela??es H2O/SiO2, resultando na cristaliza??o de duas fases zeol?ticas, MFI e STF. Os c?tions org?nicos foram an?lisados mediante resson?ncia magn?tica nuclear (RMN de 13C), comprovando sua obten??o. Todos os materiais s?lidos obtidos foram caracterizados por difra??o de raios-X, an?lise termogravim?trica (TG/DTA), an?lise qu?mico elementar CNH, microscopia eletr?nica de varredura (MEV) e adsor??o-dessor??o de N2 dos materiais zeol?ticos obtidos, ze?litas MFI com o c?tion 123TEI e a ze?lita STF com o emprego dos tr?s c?tions, sendo tamb?m realizado um estudo te?rico computacional de din?mica molecular, avaliando e comparando as energias de intera??o entre o c?tion 123TEI mediante dados experimentais e 2E13DMI teoricamente com a estrutura zeol?tica MFI.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-05-04T00:08:36Z No. of bitstreams: 1 SergioRicardoDeOliveira_TESE.pdf: 2392902 bytes, checksum: 682eebc2e9d8049dd8e60a13da9079d0 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-05-06T00:01:01Z (GMT) No. of bitstreams: 1 SergioRicardoDeOliveira_TESE.pdf: 2392902 bytes, checksum: 682eebc2e9d8049dd8e60a13da9079d0 (MD5) / Made available in DSpace on 2016-05-06T00:01:01Z (GMT). No. of bitstreams: 1 SergioRicardoDeOliveira_TESE.pdf: 2392902 bytes, checksum: 682eebc2e9d8049dd8e60a13da9079d0 (MD5) Previous issue date: 2014-02-26 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / O cultivo de camar?o marinho em sistema org?nico tornou-se uma alternativa menos danosa ao meio ambiente. A jun??o deste sistema com o cultivo integrado (alga/camar?o) ? uma forma econ?mica e socialmente ben?fica de reduzir os impactos ambientais provenientes desta atividade. Este estudo focaliza sobre o fluxo de nutrientes em um sistema de cultivo de camar?o org?nico (Litopenaeus vannamei) e sobre a capacidade de absor??o de nitrog?nio e f?sforo das macroalgas Gracilariopsis tenuifrons, Gracilaria caudata, Gracilaria domingensis e Ulva lactuca quando cultivada nesses sistemas. Esta tese est? constitu?da em quatro cap?tulos. O cap?tulo 1 est? na forma de uma introdu??o a qual destaca o estado atual da aquicultura, os sistemas de cultivos, o conhecimento atual dos cultivos integrados e as esp?cies algais mais utilizadas como biofiltros. Este cap?tulo tamb?m justifica e sublinha a necessidade de empreender a pesquisa atual. O cap?tulo 2 analisa o fluxo de nutrientes (NH4+, NO2-, NO3-e PO4-) e avalia os par?metros ambientais em viveiros de camar?o org?nico (Litopenaeus vannamei). Nesse estudo a qualidade da ?gua e do sedimento dos viveiros foi determinada durante um per?odo correspondendo a um ciclo do camar?o. Estes dados foram combinados com informa??es sobre os par?metros f?sicos e qu?micos de maneira a investigar quais vari?veis influenciam o crescimento e sobreviv?ncia dos camar?es. O capitulo 3, avalia a rela??o entre carga de nutrientes, taxa de remo??o e assimila??o de nutrientes pela macroalga Gp.tenuifrons quando cultivada em ?gua residual do cultivo org?nico. Aspectos relacionados a fisiologia da alga tais como composi??o pigmentar, taxa fotossint?tica e crescimento foi avaliado em laborat?rio. Finalmente, no cap?tulo 4, o potencial de biorremedia??o e assimila??o do nitrog?nio e f?sforo em G. Caudata, G. domingensis e U. lactuca foi estimado em outdoor. A avalia??o do papel do cultivo org?nico integrado ? tamb?m discutida. Todos estes cap?tulos d?o forma a esta pesquisa e podem ser vistos como informa??es importantes para a aquicultura org?nica. / The cultivation of marine shrimp in organic system has become an alternative less harmful to the environment. The union of this system with the integrated cultivation (seaweed?shrimp) is an economically and socially beneficial way of reducing environmental impacts from this activity. This study focuses on the nutrient flow in an organic shrimp (Litopenaeus vannamei) farming system and on the ability of macroalga Gracilariopsis tenuifrons, Gracilaria caudata, Ulva lactuca and Gracilaria domingensis to absorb nitrogen and phosphorus when grown in this system. This thesis is composed of four chapters. The chapter 1 is in the form of introduction that highlights the current state of aquaculture, the cultivation systems, the current knowledge of integrated cultivation and the most commonly used algal species as biofilters. This chapter also justifies and emphasizes the need to undertake the current research. The chapter 2 analyzes the nutrient (NH4 + , NO2 - , NO3 - and PO4 - ) flow and assesses the environmental parameters in the organic shrimp (Litopenaeus vannamei) farm. In this study, the water and sediment quality from the shrimp farm were determined for a period corresponding to one cycle of the shrimp. These data were combined with information on the physical and chemical parameters in order to investigate which variables influence the shrimp growth and survival. The chapter 3 evaluates the relationship among nutrient loading and nutrient removal and assimilation rate by macroalgae Gp. tenuifrons when grown in organic farming wastewater. Aspects related to algal physiology, such as pigment composition, photosynthetic rate and growth were evaluated in the laboratory. Finally, in the chapter 4, the bioremediation potential and nitrogen and phosphorus assimilation of G. Caudata, G. domingensis and U. lactuca were estimated in outdoor. Evaluation of the integrated organic farming role is also discussed. All these chapters give shape to this research and they may be seen as important data for organic aquaculture.