Modification of soil structure of sand tailings: I. Preliminary study on the effect of organic amendment and iron on soil aggregation

Norhayati M., . and Mokhtaruddin A. M., . Modification of soil structure of sand tailings: I. Preliminary study on the effect of organic amendment and iron on soil aggregation. pp. 83-88. ISSN 0126-6128

The effectiveness of dried palm oil mill effluent (decanter cake) which contains 14 organic carbon and iron solution in promoting aggregation in sand tailing soil was determined. The addition of iron or decanter cake at rates of 20 and 60 t ha1 had no significant effect on the aggregation and stability of the sand. At a higher rate of 100 t her1 decanter cake gave a significant effect on aggregate stability. With the addition of 0.1 Fe the rate of decanter cake application for effective stabilization was reduced to almost half However generally the extent of aggregation was low ( aggregation2mm was only 5.6). This could be due to the low amount of very fine sand and silt amounting to only 5.8 and the absence of clay in the sand tailings. It is postulated that an improvement in the soil structure of sandy tailings using amendments essentially requires the presence of fine soil fractions viz. clay and silt and/or very fine sand in sufficient amounts. Their presence will lead to better soil structure formation in the sand tailings by the amendments and hence to better water and nutrient economy of the soil.

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Abstract

The effectiveness of dried palm oil mill effluent (decanter cake) which contains 14 organic carbon and iron solution in promoting aggregation in sand tailing soil was determined. The addition of iron or decanter cake at rates of 20 and 60 t ha1 had no significant effect on the aggregation and stability of the sand. At a higher rate of 100 t her1 decanter cake gave a significant effect on aggregate stability. With the addition of 0.1 Fe the rate of decanter cake application for effective stabilization was reduced to almost half However generally the extent of aggregation was low ( aggregation2mm was only 5.6). This could be due to the low amount of very fine sand and silt amounting to only 5.8 and the absence of clay in the sand tailings. It is postulated that an improvement in the soil structure of sandy tailings using amendments essentially requires the presence of fine soil fractions viz. clay and silt and/or very fine sand in sufficient amounts. Their presence will lead to better soil structure formation in the sand tailings by the amendments and hence to better water and nutrient economy of the soil.

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Item Type:	Article
AGROVOC Term:	Soil structure
AGROVOC Term:	Organic amendments
AGROVOC Term:	Iron
AGROVOC Term:	Soil aggregates
AGROVOC Term:	Soil
AGROVOC Term:	Palm oils
AGROVOC Term:	Sand
AGROVOC Term:	Peninsular Malaysia
Geographical Term:	Malaysia
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	27 Apr 2025 23:21
URI:	http://webagris.upm.edu.my/id/eprint/22727

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