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Estudo comparativo entre a utilização real e a determinada pelo planejamento da mecanização agrícola em empresas rurais de soja e arroz
(Universidade Federal de Santa Maria, 2008-03-12)
The objective of this thesis was to carry out a study comparing actual utilization in rural businesses of soy and rice to that which is determined by agricultural mechanization planning. In this context, the specific ...
Avaliação de três sistemas de aplicação de produtos fitossanitários líquidos
(Universidade Federal de Santa Maria, 2004-05-06)
At present days agriculture has been looking for new technologies for quickly supplying the human needs in foods. It is undeniable that the use of machines in the agriculture as well as the discovery and application of new ...
Desempenho de um motor diesel de injeção indireta em função da variação do teor de biodiesel
(Universidade Federal de Santa Maria, 2008-10-01)
Due to the current world scenery of energy, the biodiesel presents a great potential as option to consumption of fuels of the finite sources. The largest use of the biodiesel in the world is with the methyl ester of soybean ...
Água no solo e rendimento de trigo, milho e soja, associados ao fenômeno El niño oscilação sul e à mudança climática simulados para Santa Maria, RS.
(Universidade Federal de Santa Maria, 2005-01-20)
The El Nino Southern Oscillation (ENSO) is a large-scale phenomenon that impacts weather and climate worldwide, including Southern and Northeast Brazil. Soil water is a major factor that affects interannual crop production ...
Propriedades mecânicas de solo franco arenoso sob distintos sistemas de preparo, tráfego mecanizado e resíduos vegetais
(Universidade Federal de Santa Maria, 2005-02-18)
The excessive mobilization of the soil causes losses to its structure. This is eliminated with the no tillage system, where mobilization only occurs in the planting line. However, considering that lately there was an ...
Avaliação do processamento de pontos obtidos com GPS utilizando diferentes bases e tempos de ocupação
(Universidade Federal de Santa Maria, 2005-02-28)
Desenvolvimento e estresse hídrico em mudas de Eucalyptus grandis (Hill ex Maiden) e Eucalyptus saligna (Smith)
(Universidade Federal de Santa Maria, 2007-02-16)
Air temperature and soil water are major abiotic factors that affect plants growth and development. The objectives of this study were two: the first was to evaluate and compare two leaf number (NL) simulation models in ...
Desenvolvimento de um sistema de documentação para o projeto de máquinas agrícolas: modelo de referência
(Universidade Federal de Santa Maria, 2008-02-14)
The agricultural machinery design process is characterized by the transformation of elevated number abstract information in a physical model. This work presents the development of a Documentation System for the Design of ...
Comportamento físico de um latossolo sob integração lavoura - pecuária
(Universidade Federal de Santa Maria, 2009-03-20)
Soil compaction under traffic of animals has become an increasingly significant problem in soils used
for crop-livestock integration. The objective of this study was to determine the effect of integration
crop-livestock ...
Avaliação da eficiência de diferentes operações agrícolas utilizando técnicas de agricultura de precisão
(Universidade Federal de Santa Maria, 2008-04-09)
The aim of this study was to evaluate the operational capacity and efficiency of two agricultural operations utilizing GPS and software programs as evaluation tools. The operations analyzed were of soybean harvest, carried ...