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Itens para a visualização no momento 21-29 of 29
Relações entre indicadores de qualidade do solo e a produtividade das culturas em áreas com agricultura de precisão
(Universidade Federal de Santa Maria, 2007-02-16)
The estimative of yield variability is an important tool to soil management decisions and to investigate yield limiting factors. Tools of precision farming as yield mapping and soil sampling using GPS makes possible identify ...
Estratégias para mitigar as emissões de óxido nitroso e aumentar a eficiência de uso do nitrogênio de dejetos líquidos de suínos injetados no solo
(Universidade Federal de Santa Maria, 2021-07-29)
The injection of pig slurry (PS) into the subsurface is an efficient alternative to reduce
N losses via ammonia volatilization. However, this way of using PS enhances the formation of
N2O, the potent greenhouse gas. This ...
Controle do escoamento superficial e das perdas de solo em sistema plantio direto na escala de lavoura
(Universidade Federal de Santa Maria, 2016-07-29)
The evidence of the formation of surface flow and associated processes such as erosion, transfer of solutes, organic matter and nutrients, are the consequences of soil management not contributing to the maintenance of soil ...
Eficiência do calcário calcítico e dolomítico na correção da acidez de solo sob plantio direto
(Universidade Federal de Santa Maria, 2007-02-23)
Liming is used to decrease soil acidity and increase exchangeable calcium and magnesium levels, but it may impaired calcium and magnesium ratios with continuous use of dolomitic or calcitic lime. The aim of this work is ...
Potencial de ciclagem de nitrogênio e potássio pelo nabo forrageiro intercalar ao cultivo do milho e trigo sob plantio direto
(Universidade Federal de Santa Maria, 2004-05-26)
The best understanding of nutrients cycling by crops provides a clearer vision of the contribution of the plants in the accumulation and availability of nutrients in no -tillage. The hypothesis of this work is that the use ...
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 ...
Mineralização do carbono e do nitrogênio no solo com o uso de lodo de esgoto e palha de aveia
(Universidade Federal de Santa Maria, 2009-02-27)
The use of sewage sludge in the agricultural is an organic recycle alternative material in the soil. The CONAMA resolution 375/2006 indicates that in certain relief
condition the sewage sludge could be applied without ...
Emissões de óxido nitroso e fornecimento de nitrogênio ao milho e trigo com doses de dejetos líquidos de suínos injetados no solo com e sem dicianodiamida
(Universidade Federal de Santa Maria, 2023-09-01)
Pig slurry (PS) has a high proportion of nitrogen (N) in ammoniacal form, whose losses by ammonia (NH3) volatilization can be high when PS is broadcast, as it is done in no-till crops. The shallow injection of PS significantly ...
Variabilidade espacial e temporal da fosfatase ácida em latossolo vermelho sob sistema plantio direto
(Universidade Federal de Santa Maria, 2023-09-28)
Soil is the foundation of agricultural production, providing the essential nutrients for plant growth and, consequently, feeding humans and animals. The integrity and vitality of the soil are imperative to maintain sustainable ...