Buscar
Itens para a visualização no momento 1-10 of 15
Solução tampão que mimetiza as características ácido-base do tampão SMP em resposta à acidez de solos brasileiros
(Universidade Federal de Santa Maria, 2011-02-21)
In Brazil, the SMP buffer has been used since the 60's as the main method to estimate
the potential acidity and/or the soil lime requirement. However, SMP contains pnitrophenol
and potassium chromate, substances with high ...
Impacto dos subprodutos da industrialização do xisto sobre atributos biológicos do solo
(Universidade Federal de Santa Maria, 2011-03-31)
The impact of using oil shale byproducts in soil on biological activity is an aspect still little
known. The aim of this work was to evaluate the oil shale byproducts impact on soil
biological attributes. In 2010, experiments ...
Dinâmica do nitrogênio mineral e produtividade do arroz irrigado na sucessão soja-azevém em solo de várzea
(Universidade Federal de Santa Maria, 2011-08-31)
The current recommendation of nitrogen fertilizer for irrigated rice (Oryza sativa) depends
on the content of soil organic matter and expectation of response to N application; it can be
influenced by previous crops. This ...
Efeito residual de intervenções mecânicas para descompactação do solo manejado sob sistema plantio direto
(Universidade Federal de Santa Maria, 2011-03-03)
The compaction became one of the main causes for soil degradation in agricultural areas, being directly related to the soil management system adopted. This situation can be observed in the Brazil humid subtropical climate ...
Resposta de genótipos de cana-de-açucar à inoculação de bactérias diazotróficas no Rio Grande do Sul
(Universidade Federal de Santa Maria, 2011-07-28)
In southern Brazil is unknown the effect of diazotrophs inoculation in sugarcane
(Saccharum officinarum). The evaluation of this practice and the selection of genotypes with
high potential for biological N fixation (BNF) ...
Potencial fertilizante de adubos orgânicos à base de esterco bovino e sua utilização na produção de mudas de alface
(Universidade Federal de Santa Maria, 2011-07-28)
Agricultural production generates a diversity of organic waste, including manure, which is
often deposited on the soil without adequate treatment, that could damage the environment.
Treatment processes such as composting ...
Balanço e evolução temporal de teores de fósforo e potássio no solo em áreas manejadas com agricultura de precisão
(Universidade Federal de Santa Maria, 2011-08-31)
The need for improving nutrient use efficiency and increase savings demand a better
knowledge of soils and production systems. The objective of this study was to
evaluate the soil P and K budget and its relationships ...
Adubação nitrogenada em videira: perdas e mineralização de nitrogênio
(Universidade Federal de Santa Maria, 2011-07-29)
Since 1980, native fields of the Campanha Gaúcha from Rio Grande do Sul State (RS) have been incorporated into the grape production. In this region, vines has been cultivated under sandy soils with low organic matter ...
Dinâmica do fósforo em solo muito argiloso sob diferentes preparos de solo e culturas de inverno
(Universidade Federal de Santa Maria, 2011-02-28)
The cultivation of plants with different skills of acquisition and absorption of phosphorus (P) under different tillage systems for a long period of time can alter the cycling and distribution of P forms in soil. The aim ...
Perdas de água e variações na temperatura de um argissolo vermelho em função de diferentes quantidades de resíduos vegetais na superfície e espaçamentos entre linhas do feijoeiro
(Universidade Federal de Santa Maria, 2011-02-25)
Irrigation is an alternative to minimize fluctuations in grain production and yield due to water deficiency. However, to prevent water losses and to improve the
efficiency of this use, the irrigation management has to be ...