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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 ...
Funções de pedotransferência do solo: estimativa por radiometria
(Universidade Federal de Santa Maria, 2012-10-11)
The traditional soil analysis many techniques are used in order to determine the physical and chemical properties of the soil. The radiometry appears as a promising alternative technique in the analysis of soil properties. ...
Sistemas de cultivos de milho consorciado ou não com plantas de cobertura de solo: Aspectos produtivos, socioeconomicos e de qualidade
(Universidade Federal de Santa Maria, 2010-02-10)
The availability of small areas for cultivation together with the technical and economic deficiencies often aggravated by socio-cultural aspects, creating the small farms, a scenario likely to farming practices with a high ...
Dinâmica de perda de P durante eventos de chuva-vazão na bacia hidrográfica de Arvorezinha
(Universidade Federal de Santa Maria, 2016-08-30)
In recent years, the intensification of agricultural activities has led to a widespread increase in phosphorus in surface waters causing environmental, social and economic problems due to eutrophication. The objective of ...
Carbono total e abundância natural de 13C em perfis de solo sob plantio de eucalipto
(Universidade Federal de Santa Maria, 2015-07-17)
The planting of eucalyptus is a common practice in areas previously used for extensive livestock farming in the southern half of Rio Grande do Sul (RS), but such cultivation raises many questions about its influence on the ...
Modelagem da infiltração de água no solo com modelo Green-Ampt
(Universidade Federal de Santa Maria, 2015-07-28)
Modeling water infiltration using physical based models, including the vertical variability of soil and rainfall intensity throughout a precipitation event, allows to estimate the runoff and infiltration measured in ...
Avaliação físico-hídrica de um latossolo vermelho em pastagem de Jiggs manejada sob diferentes intensidades de pastejo
(Universidade Federal de Santa Maria, 2016-02-19)
Perennial summer pastures are an excellent forage option for livestock feed, a fact that has boosted milk production in Rio Grande do Sul. However, the lack of animal load control coupled with high grazing intensities have ...
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 ...
Estoque de carbono e nitrogênio em solo sob sistemas de manejo e culturas de inverno
(Universidade Federal de Santa Maria, 2015-03-11)
Soil organic matter (SOM) constitutes the largest reservoir of carbon (C) and nitrogen (N) of the earth's surface. In agricultural soils, the organic fraction is of great importance in maintaining soil quality, while ...
Biomassa, atividade microbiana e produtividade de trigo e milho em solo com histórico de aplicação de fontes orgânicas e mineral
(Universidade Federal de Santa Maria, 2016-02-15)
The use of organic waste arising from the production of pigs and cattle is commonly used to fertilize crops. Successive applications of these sources in the same areas over time promote changes in physical, chemical and ...