Nutrient Emissions
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Vegetation Burning in Pampa Biome Altered the Chemical Composition of Rainfall
ABSTRACT Rainfall is one of the primary nutrient inputs to vegetation and its chemical composition is dependent on air quality as falling rain scavenges gaseous and particulate emissions from natural, industrial, and agricultural activities. The objective of this study was to evaluate whether the vegetation burn in a region of the Pampa biome influences the
Floresta Ambient.. Publicado em: 04/07/2019
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2. Nitrous Oxide Emissions in No-Tillage Onion ( Allium cepa L.) Crops Are Increased by Oilseed Radish Cover Crop and Poultry Manure Application
ABSTRACT The use of cover crops and poultry manure (PM) is an alternative to reduce the use of synthetic inputs and can contribute to the nutrient cycling in onions ( Allium cepa L.) grown under a no-tillage system. However, this management practice may contribute to an increase in N2O emissions to the atmosphere. The aims of this study were to evaluate the
Rev. Bras. Ciênc. Solo. Publicado em: 15/04/2019
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3. Treatment of swine manure: case studies in European’s N-surplus areas
ABSTRACT In this study, eight different manure treatment plants were monitored. The plants were four on-farm and four centralized treatment plants, all of them at full-scale level. Assessment includes a total of seven pre-treatment and process units as follows: mechanical separation, with and without coagulant and flocculant addition, pasteurization, nitrifi
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-10
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4. Carbon sequestration and greenhouse gases emissions in soil under sewage sludge residual effects
The large volume of sewage sludge (SS) generated with high carbon (C) and nutrient content suggests that its agricultural use may represent an important alternative to soil carbon sequestration and provides a potential substitute for synthetic fertilizers. However, emissions of CH4 and N2O could neutralize benefits with increases in soil C or saving fertiliz
Sci. agric. (Piracicaba, Braz.). Publicado em: 2015-02
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5. Methane emissions and estimates of ruminal fermentation parameters in beef cattle fed different dietary concentrate levels
Using sorghum silage, the effect of roughage/concentrate ratios was evaluated on nutrient intake, digestibility, ruminal parameters and methane production by beef cattle. Three treatments (0, 30 and 60% of concentrate in DM of the diet) were distributed in three Latin squares, with nine animals and three periods. Dry matter intake increased as the grain conc
R. Bras. Zootec.. Publicado em: 2013-08
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6. Modelagem da poluiÃÃo pontual e difusa: aplicaÃÃo do modelo Moneris à Bacia hidrogrÃfica do rio Ipojuca, Pernambuco
As emissÃes de poluentes e nutrientes sÃo causadoras de diversos problemas nos ecossistemas aquÃticos. O excesso de nutrientes, especificamente, o nitrogÃnio e o fÃsforo, à o principal responsÃvel pelo processo de eutrofizaÃÃo dos corpos dâÃgua. Na maioria dos paÃses desenvolvidos, grande atenÃÃo vem sendo dada à poluiÃÃo difusa, uma vez que
Publicado em: 2008
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7. Avaliação do ciclo de vida do álcool etílico hidratado combustível pelos métodos EDIP, exergia e emergia / Life cycle assessment of hydrated ethylic alcohol fuel by EDIP, exergy and emergy methods
One of the most integrated, complete and efficacious means for the environmental management of productive activities is based on the life cycle of the product, whose main tool is the life cycle assessment. The assessed product is the hydrated ethylic alcohol fuel because of the environmental improvement possibilities during its life cycle, an alternative for
Publicado em: 2005
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8. Contributions of Autotrophic and Heterotrophic Nitrifiers to Soil NO and N2O Emissions †
Soil emission of gaseous N oxides during nitrification of ammonium represents loss of an available plant nutrient and has an important impact on the chemistry of the atmosphere. We used selective inhibitors and a glucose amendment in a factorial design to determine the relative contributions of autotrophic ammonium oxidizers, autotrophic nitrite oxidizers, a
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9. The Effects of Abiotic Factors on Induced Volatile Emissions in Corn Plants1
Many plants respond to herbivory by releasing a specific blend of volatiles that is attractive to natural enemies of the herbivores. In corn (Zea mays), this induced odor blend is mainly composed of terpenoids and indole. The induced signal varies with plant species and genotype, but little is known about the variation due to abiotic factors. Here, we tested
American Society of Plant Physiologists.