Data/hora: 17/06/2024 15:01:30

Provedor de dados: 	124	
País: 	Brazil	
Título: 	Chemical properties of an oxisol under organic management as influenced by application of sugarcane bagasse ash	
Autores: 	Ferreira,Enderson Petrônio de Brito; Fageriae,Nand Kumar; Didonet,Agostinho Dirceu.	
Data: 	2012-06-01	
Ano: 	2012	
Palavras-chave: 	Base saturation; Organic residue; Alternative fertilizer.	
Resumo: 	There are large areas of Oxisols in South America, including Brazil, with low fertility and acidity. To improve crop yields on these Oxisols, liming and fertilization is an essential practice. However, besides the high cost of fertilizers, chemical fertilizers cannot be used in organic production systems, except insoluble sources. Ash is one of the alternative source of supplying macro and micronutrients. A field experiment was conducted, in a completely randomized block design in a factorial arrangement (three sources of ash x four rates) resulting on 12 treatments, to evaluate the effect of source and rate of ash application on soil chemical properties. The treatments consisted of three sources (bagasse, bagasse+PJ07-A and bagasse+PJ07-RA) of sugarcane ash applied in four rates as 0; 5; 15 and 30 Mg ha-1. Results showed that the use of ash significantly improved soil chemical properties such as pH, P, K, Mg, base saturation, K and Mg saturation and significantly reduced soil acidity (H+Al). Depending on the ash source or rate, some of the soil chemical properties were affected, however, the effect of ash source was not so pronounced as compared with ash rate. Ashes application resulted on a soil nutritional condiction enough to guarantee the growth and yield of most annual crops. Ash sources were equally effective in reducing acidity and improving soil fertility under this study condition, while increasing ash rate provides decrease in H+Al content and increase in pH, Mg, P and K.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902012000200004	
Editor: 	Universidade Federal do Ceará	
Relação: 	10.1590/S1806-66902012000200004	
Formato: 	text/html	
Fonte: 	Revista Ciência Agronômica  v.43 n.2 2012	
Fonte: 	info:eu-repo/semantics/openAccess