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Itens para a visualização no momento 11-18 of 18
Compactação do solo e sua influência nas propriedades físicas do solo e crescimento e rendimento de culturas
(Universidade Federal de Santa Maria, 2005-02-28)
Sol compaction effects on soil and plants has been subject of several studies. However, several parameters are used to evaluate soil compaction like bulk density and soil penetration resistance, but these parameters are ...
Transformações do carbono e do nitrogênio no solo e produção de aveia com o uso de dejetos de suínos em plantio direto
(Universidade Federal de Santa Maria, 2005-08-12)
The use of pig manure, especially of the deep-bedding manure, is not so often in the winter cover crops, preceding the summer commercial plantation. The aim of this study was to evaluate the carbon and nitrogen dynamics ...
Calibração visando recomendações de fertilização fosfatada para as principais culturas de grãos sob sistema plantio direto no Paraguai
(Universidade Federal de Santa Maria, 2005-08-08)
At present time, 60% of the grain crop area in Paraguay is under the no-till (NT)
system. This fact puts the country as a leader in this conservation practice. With the
expansion of NT in the country, some questions were ...
Controle biológico (Glomus etunicatum), químico (fipronil) e estudo molecular (PCR-ITS) do nematóide do cisto da soja
(Universidade Federal de Santa Maria, 2005-02-25)
The studies of cist nematodes were evaluated in the greenhouse condition and in the Prof. Marcos Rubens Fries Environment and Soil Microbiology and Biology Laboratory, in the Soil Department of the Federal University of ...
Suprimento de potássio em argissolo com histórico de adubação potássica
(Universidade Federal de Santa Maria, 2005-07-05)
In some soils with low amount of exchangeable potassium (Kt), the plants uptake amounts larger than the available ones, suggesting that nonexchangeble forms (Knt) participate in the plants supply. As use K fertilization ...
Dinâmica da matéria orgânica do solo em áreas de integração lavoura-pecuária sob sistema plantio direto
(Universidade Federal de Santa Maria, 2005-05-30)
The cattle breeding and crop production integrated systems in the south of Brazil is based mostly on grain production with summer crops and beef cattle production over winter pastures. This activity have been expanded ...
Atributos físicos do solo em sistemas de culturas sob plantio direto na integração lavoura-pecuária
(Universidade Federal de Santa Maria, 2005-04-30)
The integration between agriculture and cattle-raising has growing up in the last few years in Rio Grande do Sul state, Brazil. With the aim to evaluate the changes in some physical soil properties caused by different ...
Comportamento de combustíveis no solo
(Universidade Federal de Santa Maria, 2005-02-24)
The use of the petroleum as main energy base of the planet, brings with
herself serious consequences. The fractional distillation of the crude petroleum
generates hydrocarbons considered environmental pollutants, and ...