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 Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-05-10T23:27:35Z No. of bitstreams: 1 LeonardoEufrazioSoares_DISSERT.pdf: 478314 bytes, checksum: 7dc40739010f1419aabb36e3f9e5a522 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-05-18T21:00:15Z (GMT) No. of bitstreams: 1 LeonardoEufrazioSoares_DISSERT.pdf: 478314 bytes, checksum: 7dc40739010f1419aabb36e3f9e5a522 (MD5) / Made available in DSpace on 2016-05-18T21:00:15Z (GMT). No. of bitstreams: 1 LeonardoEufrazioSoares_DISSERT.pdf: 478314 bytes, checksum: 7dc40739010f1419aabb36e3f9e5a522 (MD5) Previous issue date: 2015-06-19 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / A utiliza??o da aduba??o mineral e principalmente da aduba??o org?nica em sistemas de produ??o a posta ainda s?o pouco adotadas no Nordeste do Brasil. Objetivou-se nesse trabalho avaliar diferentes doses de biofertilizante e de aduba??o mineral em Panicum maximum cv. Massai na regi?o Litor?nea do Estado do Rio Grande do Norte. O experimento foi conduzido em campo com delineamento experimental em blocos ao acaso com seis tratamentos e quatro repeti??es, sendo os tratamentos: 0, 10, 20, 30 e 40 t/ha de biofertilizante. Al?m destes, utilizou-se um tratamento com aduba??o mineral (NP). As vari?veis analisadas nos experimentos foram altura do pasto (AL), intercepta??o de luz (IL), ?ndice de ?rea foliar (IAF), clorofila total (CLO), produ??o de mat?ria seca (PMS), taxa de ac?mulo de MS de forragem (TAF), ac?mulo de folha (AFo), ac?mulo de material morto (AMM) e ac?mulo de invasoras (PIn) de pasto de campi-massai. A coleta dos dados foram feitas a cada 60 dias durante seis meses, totalizando tr?s coletas. Os dados foram retirados da ?rea ?til de cada parcela (8,16 m?). Houve efeito linear positivo para todas vari?veis estudadas a medida que aumentou-se a dose de biofertilizante, exceto para as vari?veis AMM e AIn. A aduba??o mineral promoveu melhores resultados que as doses de biofertilizante para as vari?veis IL, IAF, PMS, TAF e AFo e se assemelhou a dose de 40 t/ha, dose m?xima, para vari?veis AL, CLO, AMM e AIn. Recomenda-se novos experimentos para avalia??o de doses maiores que 40 t/ha, a fim de identificar a m?xima produ??o do capim-massai adubado com biofertilizante. / The use of mineral fertilizers and especially of organic manure on pasture production systems are still poorly adopted in Brazilian northeastern. This work aimed to evaluate different doses of biofertilizers and mineral fertilizer in Panicum maximum cv. Massai in Quartzipsamment. The experiment was conducted at the Escola Agr?cola de Jundia?, Maca?ba, RN, led in experimental design fields in random blocks with six treatments and four replications, as treatments: 0, 10, 20, 30 and 40 t ha-1 of biofertilizer. In addition, we used a treatment with mineral fertilizer (NP). The variables analyzed in the experiments were: height of pasture (AL), light interception (IL), leaf area index (IAF), total chlorophyll (CLO), dry matter production (PMS), forage accumulation rate (TAF), leaf accumulation (AFo), dead material accumulation (AMM) and accumulation of weeds (PIn) in massai grass pastures. Data collection were made every 60 days for six months, in three collections. Data were taken from the useful area of each parcel (8.16 m?). There was a positive linear effect for all variables as they increased the dose of biofertilizers, except for the AMM and AIn variables. The mineral fertilizer promoted better results than the doses of biofertilizers for IL, IAF, PMS, TAF and AFo variables were similar to dose of 40 t ha-1 of biofertilizers for AL, CLO, AMM and AIn variables. It is recommended to do new experiments to evaluate higher doses than 40 t ha-1 to identify the maximum capacity of massai grass fertilized with biofertilizer.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T13:30:31Z No. of bitstreams: 5 18.pdf: 362434 bytes, checksum: f11f72011a962c34a46e810093d47203 (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 2015-02-27T16:20:22Z (GMT) No. of bitstreams: 5 18.pdf: 362434 bytes, checksum: f11f72011a962c34a46e810093d47203 (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 2015-02-27T16:20:22Z (GMT). No. of bitstreams: 5 18.pdf: 362434 bytes, checksum: f11f72011a962c34a46e810093d47203 (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 / A cria??o de animais em regime de confinamento, na regi?o do Alto Vale Jequitinhonha-MG, depara-se com condi??es t?rmicas ambientais altamente favor?veis e a suinocultura apresenta-se como uma atividade promissora, principalmente no ?mbito da agricultura familiar, modalidade bastante compat?vel com a realidade dessa regi?o. Nesse contexto, ? importante considerar que embora tenha import?ncia social e econ?mica para o Brasil, nos ?ltimos anos, a suinocultura vem sofrendo severas cr?ticas em virtude da polui??o, sobretudo h?drica, constatada nas regi?es de maior concentra??o animal, colocando sob questionamento o modelo produtivo atualmente adotado. Contudo, observa-se interesse crescente pela ado??o de sistemas alternativos de cria??o de su?nos, entre eles, a cria??o em cama sobreposta que reduz os riscos de contamina??o ambiental pela convers?o do manejo dos dejetos da fase l?quida para a s?lida, al?m da possibilidade de utiliza??o do material org?nico resultante dessa pr?tica como fertilizante. Os objetivos deste trabalho foram: (a) fazer a caracteriza??o f?sica e qu?mica da cama sobreposta de su?no como adubo org?nico, levando em conta a legisla??o brasileira vigente quanto ?s exig?ncias para a destina??o de compostos org?nicos; e (b) avaliar os efeitos da aplica??o da cama sobreposta de su?no nos atributos qu?micos de um Neossolo Quartzar?nico e na produ??o de massa seca e ac?mulo de nutrientes em plantas de milho. Pelos resultados obtidos, pode-se concluir: (1) h? necessidade de um per?odo de matura??o, sem a presen?a dos animais, antes que a cama sobreposta seja utilizada como adubo org?nico; (2) os par?metros da cama sobreposta avaliados neste estudo se enquadram na legisla??o brasileira como fertilizantes org?nicos simples; (3) embora tenha proporcionado incrementos na produ??o de massa seca do milho, os efeitos da aduba??o org?nica com cama sobreposta foram muito mais relevantes em promover melhorias nas propriedades f?sico-qu?micas do solo do que em fornecer nutrientes ao milho; (4) ainda s?o escassas as informa??es sobre o uso de cama sobreposta como fertilizante org?nico; e (5) um aspecto interessante a se avaliar em estudos futuros envolve, principalmente, a mineraliza??o do nitrog?nio de diferentes tipos de cama, bem como de camas submetidas a diferentes tempos de perman?ncia no sistema de cria??o, a fim de que seja poss?vel estabelecer o potencial fertilizante nitrogenado desse composto e recomendar doses desse fertilizante ?s culturas comerciais. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2010. / ABSTRACT The animal creating in confinement, in the region Alto Vale do Jequitinhonha-MG, encounter environmental thermal conditions highly favorable and the swine production is shown as a promising activity, especially within the farming family, which is a mode for quite compatible with the reality of this region. In this context, it?s important to consider that although has great social and economical relevance for Brazil, in recent years, the swine production industry has been severely criticized due to pollution, mainly in water, that has been noticed in regions where swine production is concentrated. This fact puts in question the current production model. But there is a growing interest in adopting the deep-litter production system, which reduces the risk of environmental contamination by converting the waste handling of the liquid to solid, beyond the possibility of use of organic material resulting from this practice as fertilizer. The objectives of this study were: (a) evaluating performing the physical and chemical characterization of deep-litter for use as an organic fertilizer, taking into account the current legislation for organic compounds and; (b) evaluate the effects of application on physical and chemical properties of a Typic Quartzipsamment, and on nutrient accumulation and dry matter yield of maize plants. By the results obtained, we can conclude: (1) there is a need for additional composting, without the presence of animals, previous to the deep-litter be used as organic fertilizer; (2) the parameters of deep-litter evaluated, in this study, fall within the Brazilian legislation as simple organic fertilizers; (3) although, has provided increases in dry matter of maize, the effects of organic manure with deep-litter were much more pronounced in providing improvements in physical and chemical properties of soil to provide nutrients such as corn and; (4) the information about the use of deep-litter as fertilizer are scarce and; (5) an interesting aspect to assess in future studies, involving mainly the nitrogen mineralization of different types of deep-litter and your residence times in the swine production, in order to be able to establish the potencial fertilizer this compound and to recommend doses of fertilizer to crops.