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Itens para a visualização no momento 241-250 of 266
Cobre e zinco no solo sob uso intensivo de dejeto líquido de suínos
(Universidade Federal de Santa Maria, 2007-11-26)
The main alternative of pig slurry discard is its disposition in the soil as source of nutrients for plants. However, copper and zinc accumulation in the soil has been increasing significantly and may become an environmental ...
Tempo para a ocorrência da resistência a penetração restritiva ao feijoeiro em solo com diferentes estados de compactação
(Universidade Federal de Santa Maria, 2008-10-30)
Soil compaction and water availability are related to crop performance. Its
individual effects are very difficult to be measured and, possibly, they have joint
effects in field conditions. In periods of lack of rain the ...
Variabilidade de classes de solos, atributos morfológicos e físico-hídricos no rebordo do Planalto Meridional
(Universidade Federal de Santa Maria, 2013-07-24)
The edge of the Southern Plateau is an area geomorphologically complex and extremely important social and environmental. These areas are under-researched due to its low agricultural potential. In recent decades, these areas ...
Alteração da textura pela dispersão mecânica e retenção de água na fração areia em neossolos derivados de rocha vulcânica
(Universidade Federal de Santa Maria, 2020-11-24)
The definition of the time for mechanical dispersion that ensure total dispersion without
altering the amount of sand, silt and clay in soils with fragments of saprolite is still a
research gap. Moreover, the effect of ...
Comportamento hidrológico de pequenas bacias hidrográficas pareadas com campo e eucalipto no bioma Pampa.
(Universidade Federal de Santa Maria, 2023-02-27)
With the growing demand for forestry, especially eucalyptus and pine plantations for the
production of wood, pulp and resins, concerns have increased about the impacts on the
conservation of water resources, especially ...
Concentração de argilominerais 2:1 em solos subtropicais
(Universidade Federal de Santa Maria, 2013-02-22)
The 2:1 expandable clay minerals have high importance when present in soil, even in small amount, as in the case of soil with a high degree of secondary alteration. The study of these minerals is essential to understanding ...
Comportamento hidrossedimentológico de uma bacia hidrográfica rural utilizando técnicas de monitoramento e modelagem
(Universidade Federal de Santa Maria, 2012-02-29)
The aim of this study was to analyze the hydrological behavior of a watershed with intense agricultural activity based on rainfall, water discharge and suspended sediment concentration data. The study provides an analysis ...
Infiltração de água em neossolos regolíticos do rebordo do planalto do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2008-02-29)
Neossolos Regolíticos (Regosols/Entisols), even is being successfully used from an
economical perspective with horticulture and reforestation, are fragile from a natural resource
perspective because their small depth, ...
Propriedades físicas, mecânicas e hídricas de um argissolo submetido ao pastejo de ovinos em campo nativo
(Universidade Federal de Santa Maria, 2012-05-28)
The natural pastures characterize important food source for the creation of cattle and sheep.
These often are subjected to intensive grazing schemes, which may result in physical
deterioration of the soil. Sustainable ...
Caracterização química dos efluentes gerados pelo aterro controlado de Santa Maria e retenção de chumbo e zinco por um argissolo da depressão central do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2007-02-28)
The environmental consequences arising from inadequate treatment of solid waste are felt directly on air, water and soil quality through contamination by the gas and leachate generated in the decomposition of the waste, ...