2017
DOI: 10.1590/1413-70542017415003917
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Ammonia and carbon dioxide emissions by stabilized conventional nitrogen fertilizers and controlled release in corn crop

Abstract: The market of stabilized, slow and controlled release nitrogen (N) fertilizers represents 1% of the world fertilizer consumption. On the other hand, the increase in availability, innovation and application of these technologies could lead to the improvement of N use efficiency in agroecossystems and to the reduction of environmental impacts. The objective of this study was to quantify agronomic efficiency relative index, ammonia volatilization, and CO 2 emissions from conventional, stabilized and controlled re… Show more

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Cited by 20 publications
(16 citation statements)
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“…Soil fertilized with 270 kg ha -1 N had reduced CO 2 emissions compared to the unfertilized soil (Wilson, Al-Kaisi, 2008). In our study, the soil was fertilized with urea which requires its hydrolysis by microorganisms to produce ammonia and carbon dioxide (Souza et al, 2017). This reaction was correlated with the carbon and nitrogen microbial biomass (Grunert et al, 2016;Souza et al, 2017) and can be measured by the amount of CO 2 released.…”
Section: Discussionmentioning
confidence: 70%
See 1 more Smart Citation
“…Soil fertilized with 270 kg ha -1 N had reduced CO 2 emissions compared to the unfertilized soil (Wilson, Al-Kaisi, 2008). In our study, the soil was fertilized with urea which requires its hydrolysis by microorganisms to produce ammonia and carbon dioxide (Souza et al, 2017). This reaction was correlated with the carbon and nitrogen microbial biomass (Grunert et al, 2016;Souza et al, 2017) and can be measured by the amount of CO 2 released.…”
Section: Discussionmentioning
confidence: 70%
“…In our study, the soil was fertilized with urea which requires its hydrolysis by microorganisms to produce ammonia and carbon dioxide (Souza et al, 2017). This reaction was correlated with the carbon and nitrogen microbial biomass (Grunert et al, 2016;Souza et al, 2017) and can be measured by the amount of CO 2 released. Probably due to the effect of high soil moisture content, the microbial respiratory activity and the hydrolysis of urea decreased.…”
Section: Discussionmentioning
confidence: 97%
“…A maior resposta em produtividade da ureia tratada com NBPT se deve ao fato de esse aditivo inibir a atividade da enzima urease, uma vez que, dessa forma, o fertilizante permanece por maior tempo na forma amídica, retardando a hidrólise da ureia, podendo, consequentemente, ser incorporada pela água da chuva (SOUZA et al, 2017).…”
Section: Resultsunclassified
“…Os poucos dados disponíveis sobre o uso de fertilizantes nitrogenados de eficiência aumentada para a produção de milho no Brasil, não são replicados em diferentes anos GONZÁLEZ-VILLALBA, 2014;SOUZA et al, 2017; ou no espaço , fornecendo informações muito locais, não permitindo generalizar os resultados e extrapolar para outras áreas e sistemas de cultivo de milho. Portanto, um estudo avaliando vários anos e locais fazse necessário para permitir considerações mais amplas a respeito do manejo da adubação nitrogenada em sistemas de produção de milho distintos com fertilizante nitrogenado de eficiência aumentada.…”
Section: Considerações Finaisunclassified
“…O suprimento de N nesse estádio inicial implica na disponibilidade de pelo menos 30 kg de N ha -1 de forma a não limitar os eventos fisiológicos anteriormente citados (FANCELLI, 1997). Portanto, a produtividade de milho está diretamente associada com a atividade metabólica do N, exercendo um papel direto na produção de biomassa e no aumento da produção de grãos (SILVA et al, 2017).…”
Section: Introductionunclassified