Variation of some physical and hydrological soil characteristics of selected sites in Telkayf District

Authors
  • Mooatasim Daood Agha1, Yousif Hasan Al-Naser2, Noor Almola3, Ahmed Ali Khudhur4

    Author

Abstract

This research was carried out in the Telkayf District of Nineveh Governorate, utilizing three distinct soil textures characterized as calcareous and slightly alkaline .   A   logarithmic   scale   was   used   to   analyze   the   relationship   between   infiltration   time   (1–180   min)   and   cumulative   infiltration   depth   (mm).   The   modeling   results   demonstrated   that   soil   water   infiltration   behavior   was   best   represented   , consistent with the results of the Gebul eq .  ,   with   a   high   coefficient   of   determination   (R²=   0.99).   An   inverse   relationship   was   observed   between   the   slope   parameter   of   the   linear   equation   (n)   and   the   fine   soil   particles,   confirming   the   crucial   influence   of   soil   texture   on   infiltration   dynamics.   Moreover,   the   measured   cumulative   infiltration   depths   closely   matched   the   values   predicted   by   the   Gebul   eq.,   as   indicated   by   an   r   =0.99.   Field   measurements   indicated   initial   infiltration   rates   ranging   between   300   and   360   mmh⁻¹,   which   then   decreased   over   time.   The   steady-state   infiltration   rates   were   72   mm   h⁻¹   at   Kibah,   60   mmh⁻¹   at   Qawsiate,   and   21   mmh⁻¹   at   Telaskuf.   The   initial   infiltration   rates   predicted   by   the   Gebul   and   Horton   equations   were   consistently   lower   than   the   corresponding   field-measured   values.   In   contrast,   the   Gebul   eq.   showed   a   tendency   to   overestimate   the   basic   infiltration   rate,   reaching   approximately   twice   the   measured   value   in   Kibah   soils. Therefore,   this   study   aims   to   establish   the   foundations   for   selecting   a   suitable   infiltration   equation   for   different   soil   sites , this reduces the burden of fieldwork in assessing the filtration rate.

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Published
2026-06-30
Section
Articles

How to Cite

Variation of some physical and hydrological soil characteristics of selected sites in Telkayf District. (2026). Euphrates Journal of Agricultural Science, 18(2). https://ejs-agri.com/index.php/EJAS/article/view/630