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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 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 ...
Geoestatística e imagens orbitais para caracterizar a distribuição espacial e danos de larvas de melolontídeos em cereais de inverno
(Universidade Federal de Santa Maria, 2010-03-01)
This study aimed to analyze the spatial distribution and use of orbital images for the identification of white grub damage. Will be presented in two chapters, the chapter one, presents the geostatistical characterization ...
Perdas de água por escoamento superficial de um solo com diferentes níveis de resíduos vegetais e declividades do terreno
(Universidade Federal de Santa Maria, 2010-02-26)
The search for information and technology that can contribute for an adequate management of soil and water utilization has been in an increasing need, as their
conservation is of great matter for a sustainable agriculture. ...
Parâmetros mecânicos de tração em sistemas de cultivo de melancia
(Universidade Federal de Santa Maria, 2010-03-29)
In Rio Grande do Sul, Brazil, the watermelon is cultivated in a large area of sandy soils, where the conventional tillage is the most commonly used, favoring the water erosion. This leads the areas under cultivation of ...
Modificações morfofisiológicas em plantas de milho submetidas a déficit hídrico
(Universidade Federal de Santa Maria, 2010-03-01)
The use of no tillage can be an important technology to minimize the effects of the water deficit, for providing more water to the plants according to the maintenance of crop residues the soil surface. This technique reduces ...