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Fluxos de fósforo em uma bacia hidrográfica sob cultivo intensivo no sul do Brasil
(Universidade Federal de Santa Maria, 2014-09-08)
Eco-environments from sweet water are crucially important, as they provide water for multiple purposes, including human and animal consumption, irrigation and entertainment. However, its quality can suffer significant ...
Decomposição e liberação de nitrogênio da palha cana-de-açucar em função do ambiente e quantidade de palha
(Universidade Federal de Santa Maria, 2014-07-28)
The sugarcane residues came out as an important source of biomass for the production of
cellulosic ethanol in Brazil. However, there is a lack of studies on the impact that how partial
removal of these residues affect the ...
Efeito do fungo micorrízico arbuscular e do vermicomposto na fitorremediação do cobre em solo arenoso
(Universidade Federal de Santa Maria, 2014-09-12)
Introduction and objectives: Arbuscular mycorrhizal fungi and vermicompost may decrease the deleterious effects of copper on plants. The goal of the present study was to evaluate the effect of inoculation with the fungus ...
Transição agroecológica em sistemas de produção de batata
(Universidade Federal de Santa Maria, 2005-08-29)
This work was done as an articulation program between technicians of EMATER-RS, UFSM and FEPAGRO-RS and small farmers of ASBAT. The research aimed to evaluate
management practices of the potato production in a systemic ...
Estimativa da disponibilidade de fósforo para a cultura do arroz irrigado em solos do RS
(Universidade Federal de Santa Maria, 2004-12-17)
The evaluation of the available phosphorus (P) is hindered in lowland soils flooded for the rice cultivation, since the alternation in the oxidation and reduction conditions determine modifications in the dynamics of this ...
Potencial de mineralização anaeróbica do nitrogênio em solos de várzea do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2005-02-23)
The soil organic nitrogen is the main source of N to crops, which is released from soil organic matter (SOM) decomposition by microrganisms. The N fertilization is based
on SOM levels, however, the SOM decomposition and ...
Avaliação da qualidade física de solos irrigados do Rio Grande do Sul e de funções de pedotransferência para a estimativa da retenção de água
(Universidade Federal de Santa Maria, 2016-06-17)
Knowledge of the physical and hydric characteristics of the soil is essential for proper management, aimed at conciliate good yields and soil quality. In agriculture, crop productivity tends to be maximized and environmental ...
Formas de fósforo no tecido de videiras: acúmulo, redistribuição e relação com parâmetros produtivos e composição da uva
(Universidade Federal de Santa Maria, 2016-07-29)
In grapevine production, requirement and phosphorus (P) doses are established on the basis total P content in leaves collected, change in color of fruit and productivity. Phosphorus absorbed, can be accumulated in plant ...
Desenvolvimento de pedotransferência física-empírica para Modelagem da retenção de água no solo
(Universidade Federal de Santa Maria, 2016-02-25)
Soil water retention stems from the action of attractive forces manifested by adsorption and capillary
phenomena. Matric potential (ψ) expresses the soil water retention energy, which varies ...
Aplicação superficial de calcário: até onde migram e até quando persistem os efeitos no perfil do solo?
(Universidade Federal de Santa Maria, 2014-08-04)
Soil acidity is a major limiting factor in crop production. The low solubility of lime is a critical
limitation which restricts its dissolution as well as neutralization of soil acidity in the vicinity of its
particles. ...