2004
DOI: 10.1590/s0103-84782004000600016
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Perdas de nitrogênio de dejeto líquido de suínos por volatilização de amônia

Abstract: RESUMO 3, 6, 12, 24, 30, 36, 42, 48, 60, 72, 96, 120, e 3, 6, 12, 24, 30, 36, 42, 48, 60, 72, 96, 120, and INTRODUÇÃOO nitrogênio (N) é um dos nutrientes encontrados em maior proporção no dejeto líquido de suínos. Na maioria dos casos, cerca de 50% desse N encontra-se na forma mineral, podendo ocorrer perdas de N por volatilização na forma de amônia (NH3), que além de poluir o ar também diminui o potencial fertilizante do dejeto. As perdas de N por volatilização podem ocorrer quando os dejetos de suínos s… Show more

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Cited by 25 publications
(18 citation statements)
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“…In previous field studies conducted in the Southern region of Brazil, manure was applied as an N source, and cumulative N losses ranging from 6.5 to 26 % of ammoniacal N were observed (Port et al, 2003;Basso et al, 2004). Moreover, N losses in subtropical climates were significantly lower than those obtained in tropical climates (38 to 78 %) (annual average temperaturẽ 22 ºC), such as Uberlândia (Lara Cabezas et al, 1997a, b;Lara Cabezas et al, 2000) and Piracicaba (Costa et al, 2003), which is located in Southeast Brazil.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…In previous field studies conducted in the Southern region of Brazil, manure was applied as an N source, and cumulative N losses ranging from 6.5 to 26 % of ammoniacal N were observed (Port et al, 2003;Basso et al, 2004). Moreover, N losses in subtropical climates were significantly lower than those obtained in tropical climates (38 to 78 %) (annual average temperaturẽ 22 ºC), such as Uberlândia (Lara Cabezas et al, 1997a, b;Lara Cabezas et al, 2000) and Piracicaba (Costa et al, 2003), which is located in Southeast Brazil.…”
Section: Resultsmentioning
confidence: 99%
“…Soil type affects the pH and the retention of NH 4 + in the soil (Sangoi et al, 2003). Due to the aforementioned factors, average NH 3 losses below 20 % of the total N applied as urea or manure are observed in subtropical regions of Southern Brazil (Port et al, 2003;Basso et al, 2004;Da Ros et al, 2005). Thus, these lower N volatilization losses than in tropical regions of Southeast Brazil evidenced that regional studies are necessary to determine the most appropriate N fertilization management strategy (Da Ros et al, 2005).…”
Section: Introductionmentioning
confidence: 99%
“…Para reduzir tais perdas, é importante identifi car a intensidade com que elas ocorrem e também, como variam em função do método, a época e a taxa de aplicação, da composição dos dejetos, do tipo do solo e das condições ambientais (HOEKSTRA et al, 2010). Embora as emissões de NH 3 e de N 2 O já tenham sido avaliadas após a aplicação dos DLS no Sul do Brasil (BASSO et al, 2004;GIACOMINI et al, 2006), o efeito da aplicação dos DLS na presença ou na ausência de resíduos culturais na superfície do solo sobre tais emissões ainda não é bem conhecido.…”
Section: Introductionunclassified
“…These values correspond to losses of 82.40, 45.80 and 25.30 g kg -1 of total N applied in treatments, respectively. These losses can be considered low as compared with the results obtained by Basso et al (2004), where accumulated losses of 150 to 390 g kg -1 of ammonia volatilized at 144 hours after surface application of PS were found. The volatilization of only 80 g kg -1 of ammonia in the urea treatment is also low as compared with results obtained by Martha Júnior et al (2009) andMattos Junior et al (2002), where ammonia volatilizations of 720 g kg -1 and 440 g kg -1 were observed in relation to the total N applied as urea, respectively.…”
Section: Resultsmentioning
confidence: 56%
“…The accumulated losses of ammonia up to 144 hours after application of PS can reach 390 g kg -1 , according to the dose and time of application of slurry, air and soil temperature and pH (Basso et al, 2004). The first 20 hours R. Bras.…”
Section: Introductionmentioning
confidence: 99%