Relationship between raindrops and ultrasonic energy on the disruption of a Haplic Cambisol

Ciência e Agrotecnologia

Bruno Teixeira Ribeiro²  José Maria De Lima¹  Carlos Rogério De Mello¹  Marcos Aurélio Carolino De Sá¹  Geraldo César De Oliveira¹ 

[1] ,Universidade Federal de Lavras de Ciência do Solo Lavras MG

关键词: Aggregation;    soil structure;    ultrasound;    Agregação;    estrutura do solo;    ultra-som;   

DOI  :  10.1590/S1413-70542009000300021

来源: SciELO

【 摘 要 】

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.

【 授权许可】

CC BY   
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