1- Physical Properties of Polyacrylamide Treated Sandy Soils studied under Saline conditions.
2- Hydration and Swelling Properties of Soil Conditioners as Affected by Chemical Fertilizer Salts.
3- Evaluation of water quality and its effect on soil infiltration in Riyadh region.
4- Infiltration in a calcareous sandy soil as affected by natural clay deposits.
5- Crop water requirements.
6- Surface and Subsurface Drip Irrigation.
7- Deficit Irrigation.
1- Co-investigator in project funded by KACST entitled “ Development of Irrigation water requirements model for water conservation in the kingdom of Saudi Arabia (2001-2003)
2- Principal investigator in project funded by KACST entitled “ Conservation of irrigation water in Saudi Arabia using natural and synthetic soil conditioners (2002-2004)
3- Principal investigator in project funded by Research center entitled spatial variability of some soil physical properties. (2002-2003).