Aplicación de un subproducto del procesamiento de guayaba en un Ultisol, en presencia y en ausencia de fertilización mineral

There is a relative lack of technical studies on the adequate management of organic wastes from food processing. The aim of this study was to evaluate the effect of applying doses of a byproduct from guava processing, in the presence and absence of mineral fertilization, on the fertility of a an Ultisol (or Red-Yellow Argisol) under laboratory conditions. An entirely randomized 5x2 factorial experimental design was used with five byproduct doses, in the presence and absence of mineral fertilization, with four repetitions, for a total of 40 experimental units. Under the experimental conditions, the attributes pH, OM, K, Mg, BS, T, V, B, Fe, Zn and S-SO42- were affected by the guava byproduct doses, as well as by the presence or absence of mineral fertilization. With the use of this fertilization, the variables OM, K, H+Al, T, Fe and Zn increased more as a function of byproduct dose than in the absence of fertilization. The results obtained demonstrate the potential of using this waste material in the cycling and supply of nutrients.

Yield and mineral nutrition of soybean, maize, and congo signal grass as affected by limestone and slag

The objective of this work was to evaluate the efficiency of superficial applicationof limestone and slag, and their effects on soil chemical attributes and on yield and mineral nutrition of soybean, maize, and Congo signal grass (Urochloa ruziziensis). The experiment was carried out in a Rhodic Hapludox under no tillage system. The treatments consisted of the use of limestone or slag (silicates of calcium and magnesium) to correct soilacidity, and of a control treatment without the use of soil correctives. Rates were calculated in order to raise soil base saturation up to 70%. Soybean was sown in November 2006and maize in December 2007. Congo signal grass was sown right after the harvests of soybean and maize, and it was cropped during the offseasons. Soil chemical attributes were evaluated at 6, 12, and 18 months after the application of the corrective materials. Slag isan efficient source for soil acidity correction, being able to raise the exchangeable base levels in the soil profile faster than lime. Both limestone and slag increase dry matter yield of Congo signal grass, and grain yield of soybean and maize. Slag is more effective in improving maize grain yield.

Adubação mineral, esterco de curral e lodo de esgoto no desenvolvimento inicial do cafeeiro

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Crescimento radicular e nutrição mineral de cultivares de feijão em resposta à calagem

Pós-graduação em Agronomia (Agricultura) - FCA

Caracterização da fertilidade do solo da composição mineral de espécies arbóreas de restinga do litoral paulista

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Caracterização do mineral zircão através do método de traços de fissão, espectroscopia micro-raman e MEV: geocronologia do grupo Bauru

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Influência do manganês no crescimento e na composição mineral de mudas de caramboleira

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Doses crescentes de nitrogênio, fósforo, potássio e diferentes níveis de saturação por bases em relação ao desenvolvimento e nutrição mineral de Teca (Tectona grandis L. F.), sob condições de vaso

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Informe de la Reunión de Cooperación Horizontal para el Desarrollo de los Recursos Mineros de América Latina = Report of the Meeting on Horizontal Co-operation for the Development of the Mineral Resources of Latin America

Incluye Bibliografía

Clasificación de propuestas de proyectos mineros por países = Classification of mineral project proposals by countries

Complementa la información contenida en el documento E/CEPAL/G.1207

Consecuencias financieras de los acuerdos de explotación de minerales: algunas notas sobre recientes acuerdos mineros en Sudamérica = Financing implications of mineral development agreements: some notes on recent mineral agreements in South America

Incluye Bibliografía

Determinação dos valores normais de densidade mineral óssea(DMO) em milímetros de Alumínio(mm A1) do metacarpo de ovinos mestiços da raça Santa Inês por meio da densiometria óptica em imagem radiográfica

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Padronização da densidade mineral óssea (DMO) pela densitometria óptica em imagens radiográficas em eqüinos (atletas) da raça Quarto de Milha

Pós-graduação em Medicina Veterinária - FMVZ

Correlação entre a densidade mineral óssea (DMO), volume, cinzas, cálcio e fósforo do carpo acessório de eqüinos

Pós-graduação em Medicina Veterinária - FMVZ