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Inibidor de nitrificação adicionado ao solo com cama de aviário e sua influência na dinâmica do nitrogênio e do carbono
(Universidade Federal de Santa Maria, 2012-08-31)
Nitrification inhibitors can reduce the potential for environmental contamination of animal
wastes, relatively to nitrate (NO3
-) leaching and nitrous oxide (N2O) emission. However, this
strategy has not yet been ...
Injeção de dejetos de suínos no solo em plantio direto associada a um inibidor de nitrificação: efeito nas emissões de óxido nitroso e amônia
(Universidade Federal de Santa Maria, 2012-11-09)
The application of pig slurry into the soil can result in losses of nitrogen (N) through
volatilization of ammonia (NH3) and the emission of nitrous oxide (N2O), which reduce the
efficiency of pig slurry (PS) as source ...
Uso de Zeólitas naturais para mitigar a volatilização de amônia na fase inicial da compostagem de dejetos líquidos de suínos
(Universidade Federal de Santa Maria, 2014-01-15)
Gaseous losses of nitrogen (N) during composting of pig slurry (PS), mainly due to volatilization of ammonia (NH3), have important environmental and economic implications, requiring technological alternatives for their ...
Adubação nitrogenada à taxa variada com o N-Sensor nas culturas do milho e trigo
(Universidade Federal de Santa Maria, 2010-03-03)
Most tropical and subtropical soils present insufficient availability of nitrogen (N) to meet the demand of maize and wheat in order to obtain high yields. The N in plants can be evaluated through the use of sensors of ...
Balanço e evolução temporal de fósforo e potássio em três solos sob sistema plantio direto no Paraguai
(Universidade Federal de Santa Maria, 2010-02-26)
Soybean, corn and wheat crops occupy actually 70% of the agricultural areas of Paraguay, with increasing fertilization consumption, suggesting the necessity of an
efficient use of this input. The objectives of this work ...
Qualidade física de um latossolo sob plantio direto submetido à escarificação de sítio específico e o rendimento da soja
(Universidade Federal de Santa Maria, 2010-02-26)
The soil compaction has been noted under no-till especially in clay soil texture. One important characteristic of soil compaction in cropland is non-uniform occurrence. With precision farming (PF) is possible determine ...
Eficiência de fontes fosfatadas aplicadas a lanço e em linha na cultura da soja manejada sob semeadura direta
(Universidade Federal de Santa Maria, 2013-03-11)
The sources of soluble phosphate fertilizers present differences in their chemical and structural composition coming from the increasing production and consumption demand in the last decades. The product of the reactions ...
Agricultura por ambiente: manejo sítio específico da população de milho
(Universidade Federal de Santa Maria, 2012-02-24)
Precision agriculture (PA) is based on site-specific interventions, according to the spatial variability of productive factors. This strategy tends to decrease the spatial variability of yield in relation to that obtained ...
Dinâmica do efluxo de CO2 e da decomposição de resíduos afetada pelo tipo de cultura de cobertura e sistema de preparo
(Universidade Federal de Santa Maria, 2015-02-24)
The liquid carbon accounting balance in the soil is important to identify agricultural practices that contribute to mitigation of global climate change. In this sense, research must be conducted to improve the accuracy of ...
Atributos químicos do solo e a produtividade de grãos afetados pelo gesso agrícola com e sem irrigação
(Universidade Federal de Santa Maria, 2013-09-30)
Among the benefits of gypsum can cite, improving subsoil, generated by higher Ca, m % and reduction of depth of root crops. This study was conducted on an Oxisol in the city of Boa Vista do Padlock northwestern region of ...