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Itens para a visualização no momento 11-20 of 25
Dinâmica do carbono em latossolo vermelho sob sistemas de preparo de solo e de culturas
(Universidade Federal de Santa Maria, 2006-04-27)
The soil C stock is a consequence of the balance between the C losses by the CO2 emission (associate to the heterotrofic microorganisms activity) and erosion, and to C inputs, associate to organic compounds input by the ...
Ciclagem de nutrientes e produtividade de grãos em sucessões de culturas sob sistema plantio direto
(Universidade Federal de Santa Maria, 2008-06-27)
The no-tillage adoption combined with the presence of crop residues on soil surface and minimum soil disturbance increase the soil organic matter content, that
associated with broadcast fertilization, change the nutrient ...
Dinâmica da matéria orgânica em agroecossistemas submetidos a queima e manejos dos resíduos culturais
(Universidade Federal de Santa Maria, 2004-07-26)
The use of fire as pasture management has been object of intense argue, although it has many effects in soil and environment quality. In the ground, the most expressive effect occurs on the organic matter (OM), by combustion, ...
Relações entre indicadores de qualidade do solo e a produtividade das culturas em áreas com agricultura de precisão
(Universidade Federal de Santa Maria, 2007-02-16)
The estimative of yield variability is an important tool to soil management decisions and to investigate yield limiting factors. Tools of precision farming as yield mapping and soil sampling using GPS makes possible identify ...
Configuração da rede de drenagem e modelado do relevo: conformação da paisagem na zona de transição da bacia do Paraná na depressão central do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2004-02-26)
This work presents the relief modeling as a cause and consequence of soil erosion. It is in the space, which man has always depended on to live, that the biotics, non-biotics and social-economic components interaction ...
Fixação de nitrogênio por bactérias diazotróficas em cultivares de arroz irrigado
(Universidade Federal de Santa Maria, 2006-12-15)
Rice is a very important culture in the South of Brazil, with productivity mean of 6 t ha-1, requiring large amounts of nitrogen. The biological nitrogen fixation (BNF) has already been established for legumes and in ...
Reator aeróbico de biogrânulos e lagoa de aguapé como biotecnologia para o tratamento de águas residuais da suinocultura
(Universidade Federal de Santa Maria, 2008-04-30)
Residues generated by pig farms have high pollutant potential, can cause damage to
human and animal health and deteriorate the quality of air, soils and water resources. These
environmental troubles have led researchers ...
Índice e fluxo de água e ar em solos do Sul do Brasil
(Universidade Federal de Santa Maria, 2007-09-27)
Soil structure is defined by form and arrangement of soil particles and pores. As a consequence of time increase of no-tillage use the soil structure has been modified by repetition of traffic caused by agricultural ...
Metais pesados em solos sob aplicação de dejetos líquidos de suínos em duas microbacias hidrográficas de Santa Catarina
(Universidade Federal de Santa Maria, 2006-10-27)
The application of pig slurry in agricultural soils can be an efficient form of nutrients cilcle and one of the best alternative for discard and minimizing his pollutant potential. However, the differences between his ...
Mineralogia, morfologia e classsificação de saprolitos e neossolos derivados de rochas vulcânicas no Rio Grande do Sul
(Universidade Federal de Santa Maria, 2007-12-17)
The Neossolos Litólicos and Regolíticos (Leptosols and Regosols) cover at least 15% of the Rio Grande do Sul state (RS) area. Those soils have been classified as
low potential soils for general use, and also have been ...