Volatilization Of N Nh3
Mostrando 13-24 de 27 artigos, teses e dissertações.
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13. Eficiência de fertilizantes com nitrogênio e enxofre sobre a composição quimico-bromatológica e algumas características agronômicas da cultura da cana-de-açúcar / Nitrogen and Sulphur fertilizing efficiency over the chemical-bromatological and some agronomical characteristics of sugar-cane culture
O objetivo foi avaliar a influência de fertilizantes nitrogenados e do fornecimento de enxofre sobre a composição químico-bromatológica e algumas características agronômicas da cultura da cana-de-açúcar, bem como as perdas de N no sistema solo x Planta. O estudo foi conduzido no município de Araras/SP, numa área do Grupo Usina São João, durante
Publicado em: 2010
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14. Ammonia loss through volatilization and foliar emission in pasture fertilized with nitrogen sources / Perdas de amônia por volatilização e emissão foliar em pastagem adubada com fontes de nitrogênio
In search of alternatives to measure ammonia (NH3) foliar emission and minimize N-NH3 losses in pasture three research works were accomplished. The two first works aimed at checking whether or not the foam absorber, which was already used to quantify N-NH3 volatilization, is also efficient to measure foliar emission without interfering in nitrogen loss proce
Publicado em: 2009
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15. Nitrogen transformations in soil-plant system after herbicide application / Transformações do nitrogênio no sistema solo-planta após aplicação de herbicidas
Herbicide adoption might modify nitrogen dynamics in agroecossystems and, for consequence, nutrient availability for plants and microorganisms. These modifications may occur because of plant physiologic changes and/or due to herbicide effects on activity and composition of soil microbial community, which has important functions on system N modifications. In
Publicado em: 2009
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16. Perdas de nitrogênio por volatilização e lixiviação provenientes de fertilizantes granulados NK e NS / Nitrogen losses by volatilization and leaching from a granulated fertilizer NK and NS
In order to evaluate the volatilization of N-NH3 and leaching of N from granulated mixtures NK (urea and potassium chloride) and NS (urea and ammonium sulfate) in two soils, two experiments were conducted in a greenhouse with controlled temperature and humidity. The experiment followed a completely randomized design, in factorial 12 x 2 x 2 + control treatme
Publicado em: 2009
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17. Agronomic efficiency of the sugarcane ratoon fertilization with ammonium chloride / Eficiência agronômica da adubação de soqueira de cana-de-açúcar com cloreto de amônio
The greatest difficulty of incorporation into the soil of nitrogen fertilizer is worrying in the system of "green cane" (sugar cane harvested without burning), and once that urea is the nitrogen source most used, we can incur risks of loss by volatilization of NH3. Accordingly, an experiment was conducted in the field (Distrofic Red Oxisol clayed) to evaluat
Publicado em: 2009
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18. Validation of the NUTMON model for the diagnosis of agricultural management: study on two family farms in Rio de Janeiro State. / Validação do modelo NUTMON para o diagnóstico do manejo agrícola: Estudo em duas propriedades familiares do Rio de Janeiro.
This study had the following hypothesis: the agricultural production systems adopted by small farmers brings about nutrient negative balances to soil, which causes the loss of soil fertility and crop yield decline in the time span. The general objective of this study was to validate the NUTMON model of the Food and Agriculture Organization of the United Nati
Publicado em: 2008
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19. Perdas por volatilização e eficiência agronômica da mistura de uréia com zeolita natural aplicada na cultura da roseira (Rosa spp.) / Losses by volatilization and agronomical efficiency in the use of nitrogen obtained from urea of natural zeolites in rose trees (Rosa spp.).
O trabalho objetivou avaliar as perdas de N-NH3 por volatilização (PNV) e a eficiência agronômica dos fertilizantes zeolíticos obtidos através de misturas de uréia com zeolitas naturais. O primeiro experimento foi realizado na casa de vegetação da Embrapa Solos, RJ, sendo as unidades experimentais compostas por bandejas plásticas preenchidas com so
Publicado em: 2008
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20. Efficiency of sources nitrogen and sulfur in chemical-bromatologic composition and some characteristics of de corn (Zea mays L.) culture in no-tillage system / Eficiência de fontes de nitrogênio e enxofre na composição químico-bromatológica e algumas características agronômicas da cultura de milho (Zea mays L.) em sistema de plantio direto
O presente trabalho foi desenvolvido no Departamento de Zootecnia da Faculdade de Zootecnia e Engenharia de Alimentos da Universidade de São Paulo FZEA/USP localizada em Pirassununga-SP no período de 16/12/2006 a 10/05/2007 em condições de campo com o cultivo do híbrido do milho super precoce GNZ-2005 em Latossolo Vermelho Amarelo distrófico férrico.
Publicado em: 2008
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21. Ammonia volatilization of nitrogen fertilizers applied in top-dressing to maize in differents environment / VolatilizaÃÃo de amÃnia de adubos nitrogenados sob diversas condiÃÃes ambientais na cultura do milho
Experiments in laboratory and house of vegetation with two ground, one of arenaceous texture (PVAd) and another argillaceous one had been developed (NVdf), beyond a study the field, having for objective to evaluate the agronomic effectiveness of the nitrogen fertilization, evaluating losses of N for volatilization of different nitrogen seasonings: urea; urea
Publicado em: 2007
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22. Methods for quantify NH3 volatilizad from soil fertilizes with urea / Métodos para quantificar a volatilização de N-NH3 em solo fertilizado com uréia
Gaseous losses are considerable in pastures, therefore the utilization of simple and accessible methods to measure them are extremely necessary to evaluate the cycle of N in these systems. This work aimed to determine methods that quantify volatilized NH3 of nitrogenous fertilizers applied to soil which have little interferente in the volatilization processe
Publicado em: 2006
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23. Destino do nitrogênio (15N) do fertilizante em uma cultura de café / The fate of fertilizer nitrogen (15N) in a coffee crop
The coffee is one of the most important agribusiness products of Brazil and, although its management practices are already well defined, several cropping aspects still need a deeper understanding. Among these the nutrition of the coffee plant in respect to nitrogen is one of the main subjects needing more clarification. To contribute to this aspect, several
Publicado em: 2006
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24. AVALIAÇÃO E MODELIZAÇÃO DA DINÂMICA DE CARBONO E NITROGÊNIO EM SOLO COM O USO DE DEJETOS DE SUÍNOS / Evaluation and simulation of soil carbon and nitrogen dynamics with the use of pig manure
The managedment of the pig manure, in the slurry or solid form (deep bedding), and how it is applied to the soil, in the surface or incorporated, must affect the dynamics of the C and the N in the soil. The objectives of this work were: 1) to evaluate the dynamics of the C and the N in soil and to evaluate the N supply to maize which were applied pig manure
Publicado em: 2005