Data/hora: 06/06/2024 02:43:00

Provedor de dados: 	90	
País: 	Brazil	
Título: 	Carbon and Nitrogen Mineralization in Soil Combining Sewage Sludge and Straw	
Autores: 	Giacomini,Sandro José; Simon,Vera Lúcia Guedes; Aita,Celso; Bastos,Leonardo Mendes; Weiler,Douglas Adams; Redin,Marciel.	
Data: 	2015-10-01	
Ano: 	2015	
Palavras-chave: 	Decomposition; N immobilization; Biosolids.	
Resumo: 	ABSTRACT The combined incorporation of sewage sludge (SS) and oat straw (OS) to the soil can increase straw carbon mineralization and microbial nitrogen immobilization. This hypothesis was tested in two laboratory experiments, in which SS was incorporated in the soil with and without OS. One treatment in which only straw was incorporated and a control with only soil were also evaluated. The release of CO2 and mineral N in the soil after organic material incorporation was evaluated for 110 days. The cumulative C mineralization reached 30.1 % for SS and 54.7 % for OS. When these organic materials were incorporated together in the soil, straw C mineralization was not altered. About 60 % of organic N in the SS was mineralized after 110 days. This N mineralization index was twice as high as that defined by Resolution 375/2006 of the National Environmental Council. The combined incorporation of SS and OS in the soil caused an immobilization of microbial N of 5.9 kg Mg-1 of OS (mean 3.5 kg Mg-1). The results of this study indicated that SS did not increase straw C mineralization, but the SS rate should be adjusted to compensate for the microbial N immobilization caused by straw.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000501428	
Editor: 	Sociedade Brasileira de Ciência do Solo	
Relação: 	10.1590/01000683rbcs20140324	
Formato: 	text/html	
Fonte: 	Revista Brasileira de Ciência do Solo  v.39 n.5 2015	
Fonte: 	info:eu-repo/semantics/openAccess