Corn is cultivated in arid and semi-arid regions of Iran, that drought (water stress) is the most frequent environmental stress. Therefore, different strategies for increasing plant resistance to drought stress and yield efficiency and to improve soil structure under these conditions are important to be evaluated. Adding organic amendments to the soils might be considered as a way to decrease negative effects of water stress and to improve soil structure. The objective of this study was to investigate the effect of Ligustrum ’ pruning shoot residues, its’ biochar and compost on soil physical and chemical properties, and growth parameters of corn (single cross 704) in two clay loam and sandy loam soils under different water stress conditions. A greenhouse pot experiment was conducted with factorial arrangement of three organic amendments (with three application levels of 0, 1 and 2 mass percent) and two soils in a completely random design. Three levels of water stress (maintening soil water content at 90, 75 or 60% of field capacity, FC) in three replicates were applied on the corn plants. The results indicated that increase in water stress (from 90%FC to 60%FC) decreased the dry weight and height of shoot, and dry weight of root but increased the root length in all treatments. Decreasing soil water content significantly decreased phosphorus and nitrogen concentrations in shoot and root and leaf chlorophyll index, but significantly increased potassium in the shoot and root. An increase in water stress (from 90%FC to 60%FC) significantly decreased soil dispersible clay (i.e., structural instability) in all treatments. Type of organic amendment significantly affected all measure soil and plant parameters. Soil organic carbon was significantly greater in 2 percent compared to 1 percent of organic amendments. However, the effect was greater for the biochar treatment indicating that biochar is the most persistent soil amendment in terms of soil organic carbon storage. Compost and residue treatments significantly decreased the plant yield compared to control persumbly due to allelopathic effects. The compost and residues treatments decreased soil water-dispersible clay and increased soil carbohydrates, in all water stress levels. The most effective amendment which increased shoot and root dry weights, shoot height, leaf chlorophyll index and relative water content, was biochar. In all drought stress levels, potassium, nitrogen and phosphorus concentrations in shoot and root were greater in biochar-amended treatments when compared to other two amendments and control. With an increase in the water stress decreased leaf chlorophyll index in all treatments. In general, treating the soil with Ligustrum ’ biochar significantly increased the corn yield and improved the soil physical quality, therefore, it might be a beneficial method amendent for reducing the negative effects of water stress on corn and for improving the physical quality of the soil. Keywords: Biochar, Compost, Residues, Ligustrum sp., Drought stress, Corn yield