Sandy soils have properties of low organic matter, productivity, high infiltration, and hydraulic conductivity and evaporation rates under arid land conditions. Soil management such as amendment materials such like biochar, compost and biochar-compost mixture were applied at two rate (2 and 4% by weight) for improving hydro-physical properties of sandy soil under technique of partial root zone drying irrigation system (PRD) with two level of irrigation water; PRD50%ETC‎, 50% ETc and PRD75%ETC‎, 75% ETc under greenhouse environment. The treatments of amendment materials were B2 (2%biochar), CO2 (2% compost), B4 (4%biochar), CO4 (4% compost), Mix2 (1%biochar+1%compost and Mix4 (2%biochar+2%compost). The main objectives of this study were: (a) to determine the impacts of PRD and biochar, compost and their mixture on chlorophyll content of bell pepper. (b) to assess the effects of biochar and compost on morphological properties of bell pepper under PRD irrigation techniques. The data obtained from this study shows that the morphological characteristics and chlorophyll of bell pepper were affected by amendment materials and PRD technique. The main concluded point from this study was the possibility of using the mixture of biochar and compost and PRD for improving yield, water saving and WUE of bell pepper under sandy greenhouse conditions.