Emissão de CO2 do solo pela aplicação de fertilizantes orgânicos e minerais

Autor: Friederichs, Augusto, Borges Junior, Walter Santos, Roters, Diego Fernando, Mafra, Álvaro Luiz
Jazyk: portugalština
Rok vydání: 2019
Předmět:
Zdroj: Agropecuária Catarinense Journal; Vol. 32 No. 2 (2019); 86-91
Agropecuária Catarinense; v. 32 n. 2 (2019); 86-91
Agropecuária Catarinense
Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri)
instacron:EPAGRI
ISSN: 2525-6076
0103-0779
Popis: – Swine production is fundamental in Brazil and it seeks suitable use for swine slurry (SS) in agricultural areas. The objective of this study was to evaluate the effects of SS and urea application, treated or not with nitrification inhibitor (DCD) and the way of fertilizer distribution, associated or not with crop residues, on CO2 emissions in a controlled environment. The soil used in this study was a Humic Dystrudept soil and daily and accumulated CO2 emissions were measured. Daily CO2 emissions increased with SS use. There was no difference considering the way the fertilizers were applied. The use of straw increased CO2 emissions. Accumulated CO2 emissions were higher under use of straw associated with SS. Resumo – A atividade suinícola tem grande importância no Brasil e, por isso, busca-se utilização adequada do dejeto líquido de suíno (DLS) em áreas agrícolas. O objetivo deste trabalho foi avaliar os efeitos da aplicação de DLS e ureia, tratados ou não com inibidor de nitrificação (DCD), e o modo de distribuição dos fertilizantes na presença e ausência de resíduos culturais sobre as emissões de CO2 em ambiente controlado. O solo utilizado para a condução do trabalho foi um Cambissolo Húmico, para avaliar as emissões diárias e acumuladas de CO2. As emissões diárias de CO2 aumentaram com a utilização de DLS. Não houve efeito relacionado ao modo de aplicação dos fertilizantes. A utilização de palhada aumentou as emissões de CO2. As emissões acumuladas de CO2 foram maiores nos tratamentos com a utilização de palha combinada ao uso de DLS.Abstract – Swine production is fundamental in Brazil and it seeks suitable use for swine slurry (SS) in agricultural areas. The objective of this study was to evaluate the effects of SS and urea application, treated or not with nitrification inhibitor (DCD) and the way of fertilizer distribution, associated or not with crop residues, on CO2 emissions in a controlled environment. The soil used in this study was a Humic Dystrudept soil and daily and accumulated CO2 emissions were measured. Daily CO2 emissions increased with SS use. There was no difference considering the way the fertilizers were applied. The use of straw increased CO2 emissions. Accumulated CO2 emissions were higher under use of straw associated with SS.
Databáze: OpenAIRE
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