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Dinâmica do fósforo de sedimentos de uma pequena bacia hidrográfica de cabeceira
(Universidade Federal de Santa Maria, 2009-02-26)
The pressure on the natural resources has being shown more intense in the last decades, increasing degradation of air, soil and water around the world. Among the substances related to the environmental impacts that containing ...
Emissão de óxido nitroso e mineralização do carbono de plantas de cobertura e de dejetos suínos e bovínos em plantio direto de mamona
(Universidade Federal de Santa Maria, 2009-02-27)
The increase in the availability of nutrients to soil microorganisms, especially carbon (C) and nitrogen (N), through crop residues and animal slurries can increase
dioxide carbon (CO2) and nitrous oxide (N2O) emissions ...
Superfosfato simples contendo fosfato de ferro de baixa solubilidade aplicado em solos de várzea do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2009-05-21)
Some rocks used in fertilizer production contain impurities of low solubility in water such as iron aluminum phosphate (Fe- Al- P). The use of these rocks
generates simple superphosphate which may contain impurity levels ...
Produção de mudas e crescimento de Eucalyptus grandis Hill ex maiden inoculado com fungos ectomicorrízicos em área arenizada
(Universidade Federal de Santa Maria, 2009-02-26)
Eucalyptus. grandis is one of the main species used in forestry, in the Rio Grande do Sul State. The reforestations have been concentrated in low fertility soil areas, especially in phosphorus, such as the Quartzarenic ...
Emissão de óxido nitroso e dióxido de carbono após aplicação de dejetos de suínos e bovinos em um argissolo
(Universidade Federal de Santa Maria, 2009-03-02)
Emission of greenhouse effect gases due to the agricultural use of the dejections of animals as fertilizers, as well as the mineralization of the carbon of those materials in the soil healthy aspects are still relatively ...
Culturas bioenérgéticas: produção de biomassa, decomposição e liberação de nitrogênio dos resíduos culturais
(Universidade Federal de Santa Maria, 2009-08-21)
The searching of renewable energy sources is growing the interest in the biofuels obtaining from vegetable oils, and stand out crop as sunflower, soy and castor bean. Besides the production of raw material to obtaining of ...
Calcários calcítico e dolomítico e alterações nos tributos de solos e plantas sob sistema de plantio direto
(Universidade Federal de Santa Maria, 2009-02-27)
The lime application decrease soil acidity and increase the exchangeable calcium (Ca) and magnesium (Mg) level. calcitic and dolomitic limes cannot present the same efficiency in soil acidity correction and since it can ...
Simulação do transporte vertical de zinco, chumbo e cobre em solos contaminados
(Universidade Federal de Santa Maria, 2009-02-27)
The environmental contamination by metallic trace elements is a problem that is getting worse around the world due to the growth and the technologic development of
the humanity. Among the main sources of this kind of ...
Variabilidade espacial e estimativa da condutividade hidráulica e caracterização física-hídrica de uma microbacia hidrográfica rural
(Universidade Federal de Santa Maria, 2009-02-27)
The soil management systems involve changes in soil physico-hydrical properties. The objective of this study was (i) characterize the soil physico-hydrical properties in the layer 0-5 cm for different soil management systems ...
Mineralização do carbono e do nitrogênio no solo com o uso de lodo de esgoto e palha de aveia
(Universidade Federal de Santa Maria, 2009-02-27)
The use of sewage sludge in the agricultural is an organic recycle alternative material in the soil. The CONAMA resolution 375/2006 indicates that in certain relief
condition the sewage sludge could be applied without ...