Title:	Relationship between raindrops and ultrasonic energy on the disruption of a haplic cambisol.
Authors:	RIBEIRO, B. T. LIMA, J. M. de MELLO, C. R. de SA, M. A. C. de OLIVEIRA, G. C. de
Affiliation:	BRUNO TEIXEIRA RIBEIRO, UFLA; JOSÉ MARIA DE LIMA, UFLA; CARLOS ROGÉRIO DE MELLO, UFLA; MARCOS AURELIO CAROLINO DE SA, CPAC; GERALDO CÉSAR DE OLIVEIRA, UFLA.
Date Issued:	2009
Citation:	Ciência e Agrotecnologia, Lavras, v. 33, n. 3, p. 814-823, maio/jun., 2009.
Description:	The aim of this work was to compare aggregate disruption of undisturbed soil samples by ultrasonic energy to aggregate disruption caused by the energy of simulated raindrops, to provide equations that can describe this relationship, and to evaluate whether aggregate stability, expressed by sonication method, may be used to estimate the effect that raindrops have on undisturbed soil samples. Undisturbed soil samples from A, Bi and C horizons of a Cambisol were submitted to different levels of ultrasonic energy and simulated raindrops. Sieved samples (aggregates) were also submitted to different levels of ultrasonic energy so that both disturbed and undisturbed conditions of samples could be compared. The results showed that the method using ultrasonic energy on undisturbed soil samples can simulate the amount of aggregate disruption of soil due to raindrop impact. Dispersion curves of disturbed samples may not be used to estimate the effect of raindrops on undisturbed soil samples.
Thesagro:	Solo Chuva Erosão Estrutura do Solo
NAL Thesaurus:	rain soil soil structure
Keywords:	Agregação Ultrasound Aggregation Erosion Ultra-Som
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPAC)