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Desempenho e emissões de motor agrícola ciclo diesel utilizando diferentes combustíveis
(Universidade Federal de Santa Maria, 2014-07-25)
The behavior of the agricultural cycle diesel engine when changes the fuel type and
operating mode, must be known so that we can identify the best fuel resulting in better performance
at lower emissions. However, when ...
Comparação de métodos via solo e via demanda evaporativa para manejo de irrigação da cultura da soja safrinha
(Universidade Federal de Santa Maria, 2014-08-25)
Irrigation must function adequately meet the water demands of crops so that they express their full productive potential. However, there are variations with the soil-plant-atmosphere relationship, interfering to determine ...
Estimativa dos parâmetros da resistência do solo ao cisalhamento através de pedotransferência
(Universidade Federal de Santa Maria, 2014-07-11)
The growing world population requires a higher demand for food and one of the
techniques to meet this demand is irrigation. One of the best alternatives for the
storage of water for use in irrigation are earth dams. The ...
Desempenho de mecanismos sulcadores de semeadora-adubadora sobre os atributos físicos do solo em várzea no comportamento da cultura da soja (Glycine Max L).
(Universidade Federal de Santa Maria, 2014-08-15)
Soybeans are very beneficial in rotation to rice in lowland areas, but one of the limiting factors on the crop in lowland areas is the soil compaction. The objective of this study was to evaluate the effect of furrow ...
Sensoriamento remoto para identificação das causas da variabilidade no índice de massa da soja
(Universidade Federal de Santa Maria, 2014-08-27)
Remote sensing is the use of sensors to capture electromagnetic
energy reflected by objects. The quantification and qualification of the reflected
energy can help the diagnosis of plant development and the presence of ...
Atributos físicos do solo e a produtividade de soja e milho em áreas sob tráfego controlado de máquinas agrícolas
(Universidade Federal de Santa Maria, 2014-02-27)
The Soil compaction has been induced in the no-tillage (NT), mainly due to machinery traffic conditions in soils with high humidity. This traffic is essential for crop management, impossible to put out of the field. ...
Sistema de apoio à decisão em tecnologia de aplicação de precisão (SISD-TAP) para a otimização da gestão de pragas nas culturas
(Universidade Federal de Santa Maria, 2014-02-24)
Due to the large number and complexity of factors influencing the study of efficiency and efficacy of pesticide application technology, it becomes difficult to develop multivariate methods, to define indicators of ...
Simulação da produtividade de grãos de arroz irrigado em cenário futuro no estado do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2014-02-27)
Projections of a possible climate change indicate that the current CO2
concentration is expected to double and air temperature increase by up to 6°C by the
end of this century, leading to changes in crops yield. The ...
Simulação dinâmica da soja, milho e feijão, cultivado sob diferentes regimes hídricos
(Universidade Federal de Santa Maria, 2014-01-15)
Agribusiness has high importance in the state of Rio Grande do Sul, with the incorporation of fundamental importance to maintain its competitiveness and attractiveness factor technologies. Irrigation has become among the ...
Acurácia e tempos de resposta de semeadora de milho à taxa variável em regimes estacionário e transitório de acionamento
(Universidade Federal de Santa Maria, 2014-07-17)
This study developed routines to evaluate accuracy, longitudinal seed displacement and
response times, applied to Variable Rate Technology (VRT) on seeder machines. A prototype was
submitted to experiments evolving ...