Buscar
Itens para a visualização no momento 21-30 of 93
Dinâmica do fósforo de sedimentos oriundos de bacia hidrográfica subtropical compoluição rural e urbana
(Universidade Federal de Santa Maria, 2015-11-23)
Areas at steep slopes in the catchments with high occupation by family farmers in Southern Brazil, even with a high surface covered with regenerated forests, are characterized by the persistence of sources of rural and ...
Estratégias para descompactação do solo por escarificação e hastes sulcadoras em sistema plantio direto
(Universidade Federal de Santa Maria, 2015-03-16)
In areas managed under no-till in southern Brazil the soil compaction process has been associated with structural degradation of subsurface soil layer, visible by changes in soil physical properties, morphological changes ...
Propriedades mecânicas em micro e mesoescala de solos do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2015-03-06)
Susceptibility to soil degradation is a function of disturbance intensity and structure resistance, which is usually described by mesoscale properties. However, soil mechanical strength in the microscale (micromechanical) ...
Fontes orgânicas e Mineral: produção de culturas, alteração nos atributos químicos do solo e transferência de formas de nitrogênio e de fósforo
(Universidade Federal de Santa Maria, 2015-03-30)
The pig slurry, pig deep-litter and cattle slurry applied in soils under no-tillage can serve as a source of nutrients for crops, increasing the production of dry matter of shoots and grain production. This is because, ...
Efeito da sazonalidade e do nível tecnológico de unidades produtoras na qualidade e potencialidade nutracêutica do leite bovino
(Universidade Federal de Santa Maria, 2015-12-16)
The effect of technological levels of production systems and seasons in the microbiological (somatic cell count and total bacterial count) and chemical quality of milk (fat, protein, nutraceutical potentiality in relation ...
Crescimento, desenvolvimento e potencial de rendimento de soja em função do tipo de crescimento e grupo de maturidade relativa em ambiente subtropical
(Universidade Federal de Santa Maria, 2015-12-21)
The objectives of this thesis were: To estimate the relative maturity group of old and modern soybean cultivars used in Southern Brazil; To quantify the branches contribution in the leaf area index; To characterize the ...
Correlações canônicas entre caracteres fenológicos, morfológicos, produtivos e nutricionais de genótipos de milho
(Universidade Federal de Santa Maria, 2015-12-18)
The aim of this study was to identify through canonical correlation analysis if there is linear dependence among the phenological, morphological, and productive traits with protein-nutritional and energetic-nutritional ...
Proteção do óxido nítrico sobre o estresse oxidativo causado por herbicidas em arroz irrigado
(Universidade Federal de Santa Maria, 2015-07-31)
Although selective, some herbicides cause injury in plants, resulting in uncontrolled production of reactive oxygen species. Nitric oxide (NO) is appointed as a reducer of the effects caused by oxidative stress in plants; ...
Inoculação com azospirillum brasilense, manejo de pastejo e nitrogênio em integração lavoura-pecuária
(Universidade Federal de Santa Maria, 2015-02-27)
This thesis presents results of an experiment with crop-livestock integration in two growing
seasons (2012/2013 and 2013/2014). In cold seasons was used pasture formed by the mixture
of black and annual ryegrass grazed ...
Produção e qualidade de sementes de sorgo sacarino em diferentes arranjos e épocas na região central do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2015-02-26)
Global demand for biofuels/ethanol has increased in recent years, the sweet sorghum is a promising alternative for the increase of ethanol production. It's species of vigorous growth, short cycle, propagated by seeds and ...