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Adubação nitrogenada em videiras jovens e em produção
(Universidade Federal de Santa Maria, 2014-02-27)
In the Campanha Gaúcha from Rio Grande do Sul State (RS), vines has been cultivated under
sandy soils with low organic matter content; therefore they have a low nitrogen (N) supply
capacity and inputs of N fertilizers are ...
Estratégias para reduzir as emissões gasosas e melhorar o aproveitamento do nitrogênio de dejetos de suínos pelo milho
(Universidade Federal de Santa Maria, 2014-02-28)
While promoting increased farm production, applications of pig slurry (PS), in notillage
systems (NT), may represent an important source of environmental contamination.
Therefore, the pursuit of technological strategies ...
Acidificação de dejetos de suínos em compostagem automatizada: emissões gasosas de nitrogênio e resposta da alface à aplicação do composto no solo
(Universidade Federal de Santa Maria, 2014-08-29)
Automated pig slurry (PS) composting has been praised in Brazil by environmental agencies, pig farmers and agribusinesses as a promising strategy for the proper disposal of these residues. Nevertheless, one of the problems ...
Fertilização nitrogenada à dose variada na cultura do milho
(Universidade Federal de Santa Maria, 2014-02-25)
Maize is the main cereal produced in Brazil, being highly responsive to nitrogen fertilization, since the tropical and subtropical soils presents insufficient availability of nitrogen (N) to attend the culture demand in ...
Estoque de carbono em áreas pioneiras de plantio direto no Rio Grande do Sul
(Universidade Federal de Santa Maria, 2014-02-26)
The change in land use is an important factor affecting soil C stocks and their distribution in the soil profile. The conversion of native vegetation (NV) for agricultural systems causes a sharp decline in carbon storage ...
Relações da matéria orgânica com a hidrofobicidade do solo
(Universidade Federal de Santa Maria, 2014-07-14)
Soil hydrophobicity can be conceptually defined as soil repellency to water and is associated with the covering of soil particles by hydrophobic organic substances which interact with mineral particles and pores in a complex ...
Dejetos de suínos: produção de culturas, efeitos na matéria orgânica e na transferência de formas de fósforo
(Universidade Federal de Santa Maria, 2014-04-23)
Swine production is an activity widely developed in southern Brazil that generates large volumes of
manure, which are normally used as sources of nutrients in grain crops and pastures. However, successive
applications ...
Rendimento de grãos e de óleo do crambe em um latossolo: análise espacial e modelos de correlação
(Universidade Federal de Santa Maria, 2014-11-28)
The growing environmental awareness regarding production and use of renewable fuels has led many of countries to create policies to benefit producers of renewable fuels. Thus, the search for raw materials for production ...
Emissão de óxido nitroso e metano em um planossolo alagado em casa de vegetação
(Universidade Federal de Santa Maria, 2014-03-28)
Human activities have increased the amount of greenhouse gases in the atmosphere, mainly carbon dioxide, methane and nitrous oxide. Agriculture, mainly in Brazil, has been identified as a major source of greenhouse gas ...
A acidificação de dejetos líquidos de suínos afeta as emissões de amônia e gases de efeito estufa no processo de compostagem automatizada
(Universidade Federal de Santa Maria, 2014-02-28)
Composting of pig slurry (DLS) is an important strategy to mitigate the environmental damage of intensive pig farms. Despite being a promising strategy, one of the problems from composting is still the losses of nitrogen ...