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Itens para a visualização no momento 81-90 of 116
Retenção e liberação de fósforo em sedimento de fundo de açudes e córregos de pequenas bacias hidrográficas em um assentamento de reforma agrária
(Universidade Federal de Santa Maria, 2015-08-11)
Phosphorus (P) plays an important role in eutrophication of aquatic systems and the streams and pond bed sediments are an important environmental compartment in this process. The bed sediment can act as a sink or source ...
Interação entre a qualidade de resíduos culturais e a textura do solo com a dinâmica do carbono
(Universidade Federal de Santa Maria, 2016-01-08)
The chemical quality of crop residues is considered the primary driver of the dynamics of
carbon and stabilization of soil carbon (C) from the crop residues (C-new) depend on the soil
texture. The aim of this study was ...
Escarificação e adubação com cama de aves na produção de Tifton 85
(Universidade Federal de Santa Maria, 2013-07-12)
The intensive forage production for hay increases the risk of soil physical degradation and the soil chiseling, with or without organic fertilization, could be alternatives to soil structural recovery. The objective of ...
Hidrologia comparativa e perda de solo e água em bacias hidrográficas cultivadas com eucalipto e campo nativo com pastagem manejada
(Universidade Federal de Santa Maria, 2015-07-29)
The effect of forest plantations with eucalyptus on water resources in the Pampa
biome it has been little studied, resulting in a lack of information related to these
impacts especially on the watershed scale. The objective ...
Melhoria dos atributos químicos do solo pela ação combinada de calcário e gesso em latossolo sob plantio direto
(Universidade Federal de Santa Maria, 2014-08-08)
The good root development directly affects the crop production. The improvement of chemical characteristics of the sub superficial layer brings the benefit of minimizing the effects of water deficit periods to the plants. ...
Controle do escoamento superficial e das perdas de solo em sistema plantio direto na escala de lavoura
(Universidade Federal de Santa Maria, 2016-07-29)
The evidence of the formation of surface flow and associated processes such as erosion, transfer of solutes, organic matter and nutrients, are the consequences of soil management not contributing to the maintenance of soil ...
Supressão do nematoide Pratylenchus brachyurus e estímulo ao crescimento da soja por fungo micorrízico arbuscular
(Universidade Federal de Santa Maria, 2016-02-11)
The production expansion areas of soybean monoculture system result in increased fertilizers and pesticides application, and the intensification of some phytosanitary problems such as the damage caused by plant-parasitic ...
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 ...
Identificação do limite entre solo e saprolito em argissolos bruno-acinzentados derivados de rochas sedimentares
(Universidade Federal de Santa Maria, 2012-02-12)
The Argissolos (Ultisols and Alfisols) derived from sedimentary rocks occur in the region of Central Depression of the Rio Grande do Sul state, over siltstones and sandstones in the soft wavy reliefs. These soils are ...
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 ...