3121936 documents found, page 14019 of 312194
Causalidade e transmissão de preços na cadeia avícola no período de 1997-2008
Almeida, Fabrício Pelizer deThe chicken meat productive chain in Brazil has shown itself as an interesting competitive subsidy, considering the exporting capacity and the differentiation of market products. Nevertheless, intersectorial relations in this system can be considered contradictory, and in some ways even conflictive. Regarding this, one has pursued to evaluate the price transmission of aviary production from 1997 to 2008, throug...
Efeito isolado e combinado de Pratylenchus brachyurus e Fusarium verticillioide...
Rosa Junior, Oelton FerreiraThis study evaluated the effect of Pratlenchus brachyurus and Fusarium verticillioides, and their relationship, on growth and development of two mayze hybrids (30F80 and 30K73). The experiment was conducted in greenhouse conditions at Pioneer Hi-bred Research Center in Itumbiara, GO, Brazil. The experimental design was randomized blocks with 15 treatments and 10 replications. Treatments included a non-inoculate...
Fluxo de dióxido de carbono e potencial de mineralização de serapilheira em sol...
Bicalho, Ingrid MaraFundação de Amparo a Pesquisa do Estado de Minas Gerais; The study was conducted in four distinct classes of soils, namely Yellow Latosol (LAD), Hapludox (RH), Entisol (RQo) and Acrudox typical (LAw), all under savannah vegetation. Four samples were collected per area, in two depths (0-10 and 10-20 cm) and three seasons (summer, winter and spring). An analysis was made on soil chemical and physical and chemical...
Escórias siderúrgicas e seus efeitos sobre a produtividade, qualidade industria...
Araújo, Leonardo SilvaThe processes of smelting pig iron and steel produce large amount of slags and other wastes. These slags can be used in agriculture to correct soil acidity and/or as a source of silicon (Si), an element considered beneficial to plants. This study evaluated the effect of siderurgical slag Holcim on the sugar cane crop, compared to the certified slag Agrosilício® by parameters related to yield, industrial quality...
Composição química e qualidade fisiológica de sementes de girassol de plantas s...
Alves, Fernanda VieiraCoordenação de Aperfeiçoamento de Pessoal de Nível Superior; The great number of seeds in the sunflower head and the temporal distribution of its maturation cause the competition between whorls because of nutritional resources and, consequently, differences in the seed chemical composition from the head regions. As the competition among plants in the sowing line can influence seeds nutrient drainage, this work ...
Parâmetros genéticos e variabilidade em genótipos de soja
Sousa, Larissa Barbosa deUniversidade Federal de Uberlândia; Mestre em Agronomia; A soja é a principal oleaginosa cultivada no mundo e tem sido grandemente melhorada, entretanto, grande parte dos processos de melhoramento não foi acompanhada de estudos de parâmetros e de variabilidade genética. O objetivo deste trabalho foi estudar a variabilidade genética entre genótipos F5 oriundos de 22 cruzamentos biparentais de soja, por meio de t...
Distribuição na planta, fatores climáticos e parasitismo na dinâmica populacion...
Hubaide, Jorge Eduardo AttieFundação de Amparo a Pesquisa do Estado de São Paulo; The aphids Brevicoryne brassicae (Linné), Lipaphis pseudobrassicae (Davis) and Myzus persicae (Sulzer) are cosmopolitan pests that cause significant damage in the Brassicaceae family plants. The determination of which biotic and abiotic factors are most important in regulating pests is very important in Integrated Pest Management programs. Thus, this study e...
Fluxo gênico de soja geneticamente modificada, em semeaduras de verão e de inve...
Zanetti, Ana LuísaGenetically modified soybean, tolerant to glyphosate, expanded its growing area in few years becoming the most sown in the country. The advantages of its use are many compared to the conventional soybean, which has led soybean farmers to prefer it. However, since some markets still prefer conventional soybean and its production occurs in smaller areas, there is the need to supply the market with high genetic qu...
Metais pesados em solo e planta com aplicação de silicatos em cana-de-açúcar
Faria, Marcos Vieira deCoordenação de Aperfeiçoamento de Pessoal de Nível Superior; The use of silicates is an alternative that beyond the benefits of acidity correction, calcium and magnesium supply also have the silicon that presents many benefits to the plants as insect and disease s resistance increase, transpiration rate regulation, increase on photosynthetic efficiency and stress reduction caused by heavy metals. The purpose of...
Caracteres epidemiológicos e uso da análise de agrupamento para resistência par...
Martins, Juliana Araújo SantosInstituto Federal do Triângulo Mineiro; This study evaluated the reaction of 68 soybean genotypes for partial resistance against Phakopsora pachyrhizi. The experiment was done in Uberlândia-MG, in a greenhouse, from December 2004 to February 2005, consisting of three evaluation times. The following resistance characteristics were evaluated: average latent period (ALP), average number of pustules per leaflet and...