3122035 documents found, page 14021 of 312204
Fertilizantes minerais e aminoácidos aplicados via foliar na produtividade, des...
Costa, Reinaldo AdrianoCoordenação de Aperfeiçoamento de Pessoal de Nível Superior; The purpose of this work was to evaluate the vegetative development, yield and income, leaves macro and micronutrients content from the Acaiá Cerrado cultivar, trait MG- 1474, cultivated under fertilizers formulations applied over the leaves during the period from 2007 to 2009. The experiment was conducted at Pedra Branca´s Farm, situated at the km 14...
Implicações da interação genótipo por ambiente e divergência genética das linha...
Rezende, Daniela FreitasCoordenação de Aperfeiçoamento de Pessoal de Nível Superior; Soybean strains selection for high grain yield and adaptation ability to a wide range of environments is one of the major objectives of breeding programs, thus seeking to know better the genotypes in relation to Genotype x Environment interactions. Therefore, this study evaluated the magnitude of the effects of genotype (G), environment (A) and the in...
Termopotássio: fertilizante alternativo para a agricultura brasileira
Duarte, Ivaniele NahasFundação de Amparo a Pesquisa do Estado de Minas Gerais; In order to evaluate the use of the thermopotash as a source of potassium and other nutrients for plants, three studies were conducted: one incubation study, one leaching study and a biological study. In all studies the soils used were Ustoxic Quartzipsamment (RQo) and Oxysol Red (LVd). The first study, evaluated the release of silicon, calcium, magnesium...
Resposta da cultura do milho aos fertilizantes fosfatados e nitrogenados revest...
Machado, Vanessa JúniaFundação de Amparo a Pesquisa do Estado de Minas Gerais; The effective use of fertilizers, besides resulting in greater yield, can reduce production costs, with positive results in the end of the cropping season. Soil correction and fertilization in intensive maize production systems represent, on average, 40% to 45% of the production cost. Phosphorus is considered as a nutrient with low absorption by plants du...
Atividade microbiana e propriedades bioquímicas do solo sob a adição de compost...
Oliveira, Suelen Martins deCoordenação de Aperfeiçoamento de Pessoal de Nível Superior; The use of organic residues, in modern agriculture, and the adoption of more sustainable management practices, is seen as an important choice, mainly because this material is recyclable in the soil. This study was done with Oxisol soil samples, with four replications, collected from the 0-5 cm layer, to which 0, 10, 20, 40 or 80 g kg-1 of organic-mine...
Adubação nitrogenada e inoculação com azospirillum brasilense em híbridos de milho
Morais, Tâmara Prado deConselho Nacional de Desenvolvimento Científico e Tecnológico; Maize is one of the world s most important cultivated cereals; however, it presents great challenges for correct fertilization management. Its high nitrogen demand has been the major cause of excessive applications of synthetic nitrogen fertilizers in the crop. As a result, both environmental and economical problems have increased. Therefore, altern...
Translocação de Co e Mo aplicados em diferentes épocas na cultura da soja
Moraes, Leila Maria de FreitasThis study evaluated the translocation of Co and Mo applied in different times on the development of soybeans, determining their presence in soybean root nodules, leaves and grains. The assay was done in Fazenda Canadá, located in Uberlândia, MG. The experimental design was randomized blocks with seven treatments and six repetitions. Each experimental unit had twelve 11-m long rows, and 0.45 m between plants, s...
Estruturas biogênicas em latossolos de chapadões, Uberlândia MG
Melo Júnior, Heliomar Baleeiro deCoordenação de Aperfeiçoamento de Pessoal de Nível Superior; The biological activity in soil can interfere enough on its morphology, particularly in the structure as to be considered in the classification system developed soils (Soil Taxonomy). In tropical conditions the magnitude of the effects of biological activity in soil is even greater. However, morphological characteristics of biogenic nature has not bee...
Desempenho de modelos de estimativa da radiação solar na região do Triângulo Mi...
Silva, Valdiney José daSolar radiation is determinant on global climate behavior and weather phenomena, and data on solar radiation is required in many applications in different areas of study. In agronomic studies, net radiation or energy represents the amount of energy that is available for the processes of evapotranspiration, photosynthesis and heating the air and soil, and is one of the factors that most affects evapotranspiratio...
Depósito de calda sobre linhagem de milho aplicada por pulverização terrestre e...
Nascimento, Ana Paula de CastroPesticides can be applied via aircraft, ground-sprayers or through sprinkler irrigation. However, selecting the best option is complicated by the limited number of studies comparing these techniques. Thus, we studied chlorpyrifos insecticide deposition applied via aircraft (30 l ha-1), tractor-mounted sprayer (200 l ha-1) and chemigation (70,000 l ha-1) for the control of Spodoptera frugiperda (J.E. Smith) in t...