USE OF FIELD MORPHOLOGICAL RATING SYSTEM TO EVALUATE THE SOILS DEVELOPMENT OF EL·KHARGA OASIS | ||
| Journal of Soil Sciences and Agricultural Engineering | ||
| Article 11, Volume 27, Issue 11, November 2002, Pages 7963-7977 PDF (15.24 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jssae.2002.255593 | ||
| Author | ||
| H. Abd Allah | ||
| Salls, water and Environment Res. Inst., Agrlc. Center, Giza, Egypt. | ||
| Abstract | ||
| This study aims to estimate and evaluate the changes of some soils of EI- Kharga Oasis using the morphology rating scale introduced by Bilzi and Clolkcez (1977). Twelve profiles were examined, seven out of them representing this study. Soil distinctness and development were assessed using the yecent methods; Relative Horizon Distinctness (RHO) and Relative Profile Development (RPD). Also, profile index values were calculated from horizon index values using quantitative profile index methods. The average RHO ratings of the studied profiles are 3 to 10, 7to 20, 11 to 12, 19, 9 to 11 and 3 to 5 whereas those ofRPD ratings are 9 to 14,17 to 19, 9 to 15,19, 12 to 16 and 3 t07 for the vertic Toniorthents, Typic Toniorthents and Typic Tonipsamments, respectively. The RHO values coincide with those of RPD ratings profile index values. Data revealed that the clear differentiation in the recent soil (vertic Torriorthenls), (Typic Torriorthents) and (Typic Torripsammenls). The study occurs that the soils of vertic Toniorthents and Typic Torriorthents have developed more than the others soils of Typic Tronipsamments. | ||
| Keywords | ||
| Estimate of RHO; RPD and Quantitative index; EI-Kharga Oasis | ||
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