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Substâncias húmicas em solos de diferentes feições geomorfológicas no rebordo do planalto do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2008-12-16)
In spite of the great importance of the soil organic matter for the sustainability of the
natural systems and of agricultural production, its study remains incipient in the area
of the Edge of the Rio Grande do Sul Plateau, ...
Disponibilidade de potássio afetada por cultivos em solos com longo histórico de adubação
(Universidade Federal de Santa Maria, 2008-02-15)
In soils containing minerals with potassium in non-exchangeable forms, crops
uptake a larger amount of this nutrient than that the chemical method can extract,
making more difficult the establishment of availability classes ...
Correção da acidez do solo em subsuperfície em um latossolo de textura franco-arenosa sob plantio direto
(Universidade Federal de Santa Maria, 2008-01-29)
In tropical and subtropical areas, especially, where there is the dry period occurrence, the acidity subsurface (below the 10 cm) it has been pointed as one of the limitation causes to the growth of roots and the agricultural ...
Impacto do uso da terra nos atributos químicos e físicos de solos de rebordo do planalto - RS
(Universidade Federal de Santa Maria, 2008-02-29)
Changes in land use can take into soil chemical and physical quality degradation. In the hillside areas
of the Rio Grande do Sul State (RS) land degradation vulnerability is elevated, due to the combination
of a strong ...
Casca de arroz e esterco bovino para a multiplicação de minhocas e produção de mudas de alface, tomate e boca-deleão
(Universidade Federal de Santa Maria, 2008-02-22)
The earthworms are organisms of the edaphic fauna with great capacity of transformation of organic residues with stabled composting. The potential of these organisms have the
advantage in the earthworm-breeding, seeking ...
Biogrânulos aeróbicos em reator seqüencial em batelada para o tratamento de efluente de biodigestor proveniente da suinocultura
(Universidade Federal de Santa Maria, 2008-03-17)
The fermentation of pig slurry into anaerobic digesters has been a recommended practice for the energetic utilization of the produced methane (CH4), thus reducing the emission of this greenhouse gas into the atmosphere. ...
Eficiência da adubação a taxa variável em áreas manejadas com AP no Rio Grande do Sul
(Universidade Federal de Santa Maria, 2008-09-26)
This research aim to evaluate the efficiency of variable fertilizer rate in
croplands under precision agriculture (PA) in Rio Grande do Sul State with different
level of technologies adoption. In the first chapter was ...
Emissão de gases de efeito estufa em sistemas de manejo em solo do planalto médio do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2008-03-04)
Agriculture is directly linked to atmospheric concentration of greenhouse gases (GHG) through basic processes that occur in the soil-plant system. Agricultural soils can act as a source or sink of GHG depending on the ...
Emissões de CO2 do solo sob preparo convencional e plantio direto em latossolo vermelho do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2008-03-04)
Climatic change is associated with the increase of greenhouse gases (GHG) concentration, including carbon dioxide (CO2). Among the most important strategies to decrease global warming are decrease emissions and increase ...
Qualidade da água para consumo humano ofertada em escolas e comunidades rurais da região central do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2008-02-15)
In rural areas, including rural schools, the water intended for human consumption may not have quality, due to problems in their capture and storage, leaving the rural population in the mercy of contamination and diseases ...