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Itens para a visualização no momento 71-80 of 104
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 ...
Adubação orgânica em condições de irrigação suplementar e seu efeito na produtividade da quinua (Chenopodium quinoa Willd) no planalto da Bolívia
(Universidade Federal de Santa Maria, 2012-08-24)
Quinua (Chenopodium quinoa Willd.) is an Andean grain with high protein content (14%), and it is one of the main crops that generate incomes for Bolivian plateau farmers. The quinua crop grows in conditions of low temperature, ...
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 ...
Adubação potássica em videiras jovens e em produção no Sul do Brasil
(Universidade Federal de Santa Maria, 2014-08-22)
The application of potassium (K) and lime as a source of Calcium (Ca) and Magnesium (Mg) in soil may affect the growth and nutritional status of young plants of grapevines as well as grape production, must composition and ...
Transferência de fósforo em pequenas bacias hidrográficas com predomínio de sistema plantio direto precário
(Universidade Federal de Santa Maria, 2014-03-21)
Agricultural activities generate impacts on the environment and require constant study and monitoring to enhance our understanding about the ways and degree of contamination resulting therefrom. The main objective of this ...
Mineralogia e matéria orgânica de terra preta arqueológica e solos adjacentes não antrópicos na região do Apuí Amazonas
(Universidade Federal de Santa Maria, 2018-02-27)
The Brazilian Amazon presents in most of its extension, highly weathered, acid and low fertility natural soils. However, from the years of 1870 and 1871, the first reports about the Amazonian anthropic soils, known as ...
Estimativa da demanda hídrica da cultura do milho irrigado no Sul do Brasil utilizando imagens orbitais e Kc dual
(Universidade Federal de Santa Maria, 2018-05-15)
The use of orbital images to provide complementary support to water management in irrigated agricultural systems, with an emphasis on the estimation of crop coefficients, has achieved good results, especially if associated ...
Produção de biomassa, composição química e decomposição de resíduos culturais da parte aérea e raízes no solo
(Universidade Federal de Santa Maria, 2014-02-27)
Crop residues (CR) from shoots (S) and roots (R) of plants are the main source of
carbon C (C) and nitrogen (N) for the agricultural soils. Compared to the S of plants there are
few studies on the production of dry matter ...