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Fluxo de gases de efeito estufa em sistemas de preparo do solo e rotação de culturas no planalto do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2009-02-27)
The main greenhouse gases (GHG) are the nitrous oxide (N2O), methane (CH4) and carbon dioxide (CO2), whose atmosphere concentrations increased in an unprecedented rate since the Industrial Revolution. This work aim evaluates ...
Relação solo-máquina-planta num argissolo cultivado e sob campo nativo
(Universidade Federal de Santa Maria, 2009-08-17)
The negative effects due to soil compaction in agricultural soils may result in inappropriate conditions for plant growth. This study was aimed at evaluating the
traffic effect on physical and mechanical soil properties ...
Irrigação localizada na cultura do feijoeiro na depressão central - RS
(Universidade Federal de Santa Maria, 2009-02-27)
During the second harvest in the central region of Rio Grande do Sul, pluvial precipitations are usually irregularly distributed along the bean production cycle. This irregular distribution of rains during the bean cultivation ...
Influência de lâminas de irrigação sobre a produtividade da rebrota de Hemarthria altíssima
(Universidade Federal de Santa Maria, 2009-07-17)
The uses of the natural or cultivated grassland can be considered an important vital productivity possibility to the cattle raising holding in many different places in the world, where farmers who have cattles, sheeps, and ...
O fenômeno El Niño Oscilação Sul e a erosividade das chuvas em Santa Maria, RS
(Universidade Federal de Santa Maria, 2009-02-19)
A large-scale phenomenon that greatly affects the weather and the climate of different locations of the Globe and that has been widely studied during the last three decades is the El Niño Southern Oscilation (ENSO). ENSO ...
Sistemas de culturas em plantio direto adaptados à pequena propriedade relacionados com a erosão e atributos de um argissolo vermelho
(Universidade Federal de Santa Maria, 2009-11-16)
Considering soil management systems, are rare the research projects that are carried on by a time period long enough to several soil attributes may be expressed conveniently. The no-till system influences several soil ...
Produtividade, severidade de mancha de alternaria e deficiência hídrica em diferentes épocas de semeadura do girassol em Santa Maria - RS
(Universidade Federal de Santa Maria, 2009-12-15)
This study aimed to determine the occurrence of values of severity of injury caused by alternaria leaf spot and water deficit during the developmental cycle of three genotypes of sunflower and its relationship with ...
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 ...
Projeto, construção e teste de instrumentação eletrônica para avaliação do desempenho de tratores agrícolas
(Universidade Federal de Santa Maria, 2009-01-09)
The objective of this work was to design, construct and test an electronic
instrumentation acquisition and storage of data, regarding the performance of the
agricultural tractors during operations to field. Was realized ...
Irrigação e aplicação de fungicida na ocorrência de doenças e produtividade do girassol
(Universidade Federal de Santa Maria, 2009-02-27)
The occurrence of disease has been one of the main problems of the sunflower crop over the years. The objective of this study was to evaluate the effect of irrigation and the application of fungicides on the occurrence of ...