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Estudo de trafegabilidade aplicado a veículos de roda em transporte e tração
(Universidade Federal de Santa Maria, 2010-03-24)
The ability of vehicles to traverse soft soils is an important aspect of their performance. The geological, climate and topography diversity originated, in Rio
Grande do Sul, extensive areas of hydromorphic clay soils, ...
Aperfeiçoamento de um mecanismo sulcador para plantio direto de mandioca
(Universidade Federal de Santa Maria, 2010-10-23)
In the cassava production the conventional tillage, characterized by soil preparation with intensive mobilization, is commonly used. However, when this practice results in the maintenance of small quantities of straw on ...
Medida de concentração de sedimentos e turbidez na Bacia Hidrográfica do Lajeado Grande, São Martinho da Serra (RS)
(Universidade Federal de Santa Maria, 2010-03-29)
With the large current debate around climate change, water scarcity worldwide and
the controversy created by the conflicts arising from multiple uses of water especially
during dry periods, and taking into account the ...
Efeito do espectro de gotas e idade de trifólios sobre a taxa de absorção de fungicidas em soja
(Universidade Federal de Santa Maria, 2010-10-20)
Currently, the Asian soybean rust is the main disease of this crop in Brazil and chemical control, so far, is the only effective measure to reduce losses. The development of control strategies for this disease requires ...
Relação entre pontas de aplicação, horário de aplicação e cultivares no controle de Phakopsora pachyrhizi em soja
(Universidade Federal de Santa Maria, 2010-03-31)
The process of agricultural production in Brazil has as a main gear the application of chemicals carried out by spraying machines. This study aimed to identify possible interactions between the tips of spraying nozzles, ...
Influência do deslizamento da roda motriz de uma semeadora/adubadora de plantio direto no espaçamento longitudinal de sementes de milho
(Universidade Federal de Santa Maria, 2010-03-19)
The present work was conducted to evaluate the operational conditions of a no tillage system for maize culture. Two different speeds was considered, 4.1 km/h and 7.2 km/h in three different depths of planting, 3, 5 and 7 ...
Simulação de cenários de sustentabilidade hídrica da orizicultura na sub-bacia hidrográfica do Arroio Grande através da implantação de barragens temporárias
(Universidade Federal de Santa Maria, 2010-09-03)
Water shortages in certain periods have led to serious social conflicts, as well as economic and environmental impacts resulting from irrigated agriculture, especially of rice growing, which represents a high demand of ...
Simulação do rendimento de grão de arroz irrigado em cenários de mudança climática
(Universidade Federal de Santa Maria, 2010-02-18)
Climate change projections indicate that current atmospheric CO2 concentrations (380 ppmv) will double by the end of this century, which may lead to an increase in crop yield due to an increase in photosynthesis. However, ...
Misturas de biodiesel de soja, com aditivação e variação do ponto de avanço, em um motor de injeção direta
(Universidade Federal de Santa Maria, 2010-08-09)
The diesel fuel is used widely in the country and the world. Moreover, growing environmental awareness leads to a larger demand for renewable energy resources. The pioneering in the use of ethanol makes Brazil also bears ...
Previsão da ocorrência de requeima e alternaria em tomateiro industrial irrigado sob duas condições climáticas e seu custo
(Universidade Federal de Santa Maria, 2010-02-22)
The tomato (Lycopersicon esculentum Mill) is an important crop in the world and an important product for trade "in nature and for industry. The amount of fungicides used in
tomato crop for control of diseases is high and ...