Data/hora: 09/06/2024 04:08:10

Provedor de dados: 	64	
País: 	Brazil	
Título: 	Alkalinized sewage sludge application improves fertility of acid soils	
Autores: 	Barbosa,Julierme Zimmer; Poggere,Giovana Clarice; Dalpisol,Maristela; Serrat,Beatriz Monte; Bittencourt,Simone; Motta,Antonio Carlos Vargas.	
Data: 	2017-09-01	
Ano: 	2017	
Palavras-chave: 	Sanitation waste; Liming; Phosphorus recovery; Nutrient source; Organic matter.	
Resumo: 	ABSTRACT Although it is known that alkalinized sewage sludge raises the pH of acid soils, there is limited knowledge regarding its effects on other soil fertility indicators, such as P and K availability and soil organic C content. Thus, the goal of this study was to evaluate how the application of alkalinized sewage sludge affects the fertility of acid soil. Twenty sewage treatment plants were selected throughout Paraná State (Brazil), and samples of alkalinized sewage sludge and samples of the most representative agricultural soil of the region were collected (covering soils with medium, clayey or very clayey texture). Each soil was incubated for 60 days with doses of sewage sludge (0, 10, 20, 40, and 80 Mg ha-1) from its region and equivalent doses of limestone. The alkalinized sewage sludge was superior to limestone in the correction of soil acidity (pH, Al3+, and H + Al3+) and P and Ca2+ availability. The sludge also increased Mg2+ availability in all soils, K+ in seven soils and organic C in three soils. The very clayey soils (higher buffering capacity) supported higher sludge doses than did clayey and medium texture soils. The alkalinized sewage sludge application in acid soils proved to be an interesting alternative to recycling this type of waste, because it improved soil fertility and could reduce costs associated with soil management and crop fertilization.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000500483	
Editor: 	Editora da Universidade Federal de Lavras	
Relação: 	10.1590/1413-70542017415006717	
Formato: 	text/html	
Fonte: 	Ciência e Agrotecnologia  v.41 n.5 2017	
Fonte: 	info:eu-repo/semantics/openAccess