CONTRIBUTION OF SOME ORGANIC AND INORGANIC MATERIALS IN SOIL AGGREGATES FORMATION AND STABILITY UNDER THE EFFECT OF DRYING/WETTING CYCLES | ||
| Journal of Soil Sciences and Agricultural Engineering | ||
| Article 6, Volume 5, Issue 12, December 2014, Pages 1667-1673 PDF (384.85 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jssae.2014.49840 | ||
| Author | ||
| A. M. A. Mashhour | ||
| Soils and Water Dept., Agric. Faculty, Al-Azhar University. | ||
| Abstract | ||
| This research is trying to identify the contribution of some different organic and inorganic materials besides alternating wetting and drying process in soil aggregates formation and stability. A laboratory incubation experiment was conducted to achieve this purpose, sandy soil was chosen for this study. The incubation treatments included inorganic materials; calcium sulfates and ferrous sulfates and some organic materials; humic acid and plant residues. These materials were added only and with 10 % clay, also, the treatments conducted to drying/wetting cycles and without. The findings of this experiment showed that the soil aggregates formation and stability depended largely on the interaction between organic materials and clay content under drying/wetting cycle's effect. The higher contribution percentage was 9.2 % for humic acid plus 10 % clay after drying/wetting cycle's treatment compared with the control. | ||
| Keywords | ||
| soil aggregates formation; stable aggregates; dry/wet cycles | ||
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