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Dr. Mohamed Ahmed Mohamed Bassuony :: Publications:

Effect of Long-Term Organic and Mineral Fertilizers on Physical Properties in Root Zone of a Clayey Ultisoil
Year: 2015
Keywords: Bulk density, hydraulic properties, penetration resistance, soil organic carbon, soil water content
Journal: Archives of Agronomy and Soil Science
Volume: Not Available
Issue: Not Available
Pages: Not Available
Publisher: Taylor & Francis Group
Local/International: International
Paper Link:
Full paper Not Available
Supplementary materials Not Available

To explore the effects of long-term organic and mineral fertilization practices on the physical properties in Ultisol of south China, a study was conducted since 1998 to investigate the effects of a control (CK), application of chemical fertilizers (NPK), application of organic manure (OM), and NPK fertilizer plus straw returning (NPK + straw). Results showed that OM significantly increased soil water retention capacity at all tensions but with larger increment in low tension at depths of 0–10 cm and 10–20 cm (p < 0.05) when compared with the CK. On the contrary, NPK and NPK + straw led to a decrease in soil water retention capacity under chemical treatments. In the field both in wet and dry periods, soil water content was significantly higher in OM than in NPK + straw and NPK (p < 0.05) since soil hydraulic conductivity (saturated and unsaturated) are lower in OM than in other treatments (p < 0.05). OM was also found to have the lowest soil bulk density and penetration resistance of the four treatments. A high negative correlation was observed between the soil organic carbon and the bulk density and the penetration resistance (p < 0.01). In this way, the application of OM improved the clayey soil physical properties.

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