The objective of this work was to evaluate the performance of Urochloa hybrid Convert HD364 applied in different doses as a vegetable biostimulant under grazing simulation in intermittent stocking in the city of Uberlândia, Minas Gerais. The treatments consisted of a control (absence of biostimulant) and in 5 doses of biostimulant, 0.25; 0.5; 0.75; 1.0 and 1.25 L ha-1, in a randomized complete block design with 4 replicates. Productive and qualitative parameters were evaluated. The data were submitted to analysis of variance, using for the comparison of means, the Regression test at 5% of significance. The biostimulant promotes an increase in the accumulation of DM and in the rate of accumulation of forage, leaves and stems of Urochloa hybrid and reduction in the percentage of dead material and the L:S ratio of Urochloa hybrid.

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Aos meus queridos pais João Severino de Freitas e Viridiane Martins Moraes Severino, meus irmãos Pedro Severino de Menezes Neto e João Severino de Freitas Filho por todo carinho, apoio e compreensão nos momentos de ausência. AGRADECIMENTOSA realização deste trabalho contou com a colaboração direta e indireta de diversas pessoas, a quem manifesto meus sinceros agradecimentos:Em primeiro lugar a Deus, pela minha vida e por me conceder a graça de conviver com pessoas extraordinárias que me ensinaram muito nesse período.A minha orientadora Profª. Dra. Gleice Aparecida Assis, pelos conhecimentos acadêmicos transmitidos, pela paciência e pelos momentos de incentivo, dedicação, sugestões e críticas sempre construtivas que me ajudaram a crescer durante esta jornada.Ao meu coorientador Prof. Dr. George Deroco Martins pelo incentivo e recomendações que foram essenciais para que pudesse desenvolver e finalizar este trabalho, bem como a dedicação e disponibilização de seu tempo, sugestões e críticas construtivas.A Professora Dra. Ana Carolina Silva Siquieroli que auxiliou na metodologia e desenvolvimento de uma parte crucial do trabalho que culminou em resultados excepcionais, bem como a dedicação, sugestão e críticas construtivas que somaram no trabalho.A Professora Dra. Adriana Tiemi Nakamura que auxiliou na metodologia e desenvolvimento de uma parte crucial do trabalho e culminou em resultados excepcionais, bem como a disponibilização do espaço físico do laboratório, equipamentos e conhecimento que somaram no trabalho.Ao meu amigo Renan Zampiroli pela dedicação e disponibilização do equipamento necessário para monitoramento e registro de imagens necessárias para o desenvolvimento do trabalho, reflexões e discussões sobre o tema da dissertação.Ao Núcleo de Estudos em Cafeicultura do Cerrado (NECACER) e todos os discentes colaboradores:

The confinement of pigs stands out as a great generator of swine wastewater (SW). The final destination of waste generated is currently a concern of society, since if handled improperly, it can cause serious impacts to the environment. One of the alternatives is the use of SW as a source of nutrients, which are made available to the plants, after the mineralization of organic matter. The objective of this work was to compare soil chemical attributes under two planting arrangements, in single and double lines of Corymbia citriodora. Two experiments were carried out at the Bonsucesso farm, in Uberlândia-MG, the first with C. citriodora in simple lines, with five plants per plot, spacing two meters between plants and 15 meters between rows. The second experiment was with C. citriodora in double lines, with two meters between plants in the line, three meters between lines in the plot and 15 meters between the double lines of C. citriodora. The statistical design was in randomized blocks. The treatments used were five doses of SW (0; 200; 400; 600 and 800 m³ ha-1) with five replicates. The application of SW rates was divided in the dry season, in the months of June, July and August. The chemical characteristics of the soil were evaluated in the 0-20 cm depth layer. Planting on double lines of C. citriodora provided higher soil nutrient contents. The application of swine wastewater raised the levels of potassium and heavy metals such as copper and zinc. The dose of 200 m3 ha-1 provided adequate levels for most nutrients present in the soil.

The coffee growing in Minas Gerais has been outstanding due to the high quality in the production and the cultivar choice is very important during the culture implantation process. Genetic dissimilarity studies are very important to make further advances in breeding programs to obtain more adapted cultivars. Thus, the objective of this work was to evaluate the agronomic potential and genetic dissimilarity among coffee cultivars based on hierarchical and optimization methods. The experiment was installed at the Federal University of Uberlândia, Campus - Monte Carmelo. The planting was carried out in December 2015, using a randomized block design with four replications. A spacing of 3.5 m between rows and 0.6 m between plants was adopted. The treatments consisted of the Coffea arabica cultivars: Acaiá Cerrado - MG 1474; Mundo Novo IAC 379-19; Bourbon Amarelo IAC J10; Catuaí Vermelho IAC 99; Topázio MG 1190; Acauã Novo and IAC 125 RN. Growth, crop yield and physical classification were evaluated for type, size and shape of coffee beans. There was consistency between hierarchical and optimization methods in the groups formation. The cultivar Mundo Novo IAC 379-19 showed the highest vegetative vigor. The cultivar Acaiá Cerrado MG 1474 was the one that obtained the highest yield in the first crop. The cultivar Topázio MG 1190 showed higher genetic dissimilarity compared to the other cultivars. UPGMA multivariate analysis and Tocher optimization methods indicated that the cultivars have genetic variability for the region under study.