Abstract: Short-season production systems in soybean [Glycine max (L.) Merr ], such as double-cropping or late-sowing require high populations or narrow row spacing for high yield. The soil water- row spacing interaction suggests the need for a better understanding of how row spacing affects water utilization and the subsequent effects on yield. Changes in soil water storage have been used to characterize long-term trends (5 to 10 days) in water depletion. The objective of this study was to determine the effects of row spacing and irrigation intervals on yield, plant height, first pod height, number of branches, number of nodes, number of pods and seed yield per plant for 2 year period. The study had four row spacing (50-30, 70-30, 80-40 and 70-70 cm), four irrigation intervals (3, 6, 9 and 12 day intervals) and three replication in Harran Plain conditions in Turkey. Decreasing row spacing reduced the seed yield per plant but led to an increase in yield per hectar. Yields were the highest at 50-30 cm (3752.6 kg ha-1) row spacing and 3-6 day irrigation intervals (3607 and 3744.1 kg ha-1, respectively) and were the lowest at the 70-70 cm row spacing (3096.6 kg ha-1) and 12 day intervals (2752.4 kg ha-1). For short-season production systems in soybean, narrow row spacing ensured early canopy coverage and maximized light interception, crop growth rate and crop biomass, resulting in the increased pod number and yield potential per unit area.