Water movement is the major process affecting solute transport in the soil profile under Florida sandy soils conditions. Therefore, understanding the impact of current irrigation and N fertilization practices on leaching of water and nutrients below the crop root zone, and on crop yield is important for developing best management practices (BMPs). A field study was conducted at North Florida Research and Education Center, University of Florida, to investigate the effect of irrigation and N- fertilizer rates on plant growth, yield, and movement of water, N-forms, potassium, and bromide in the soil profile. Bell pepper was grown on sandy soil using plastic mulched beds during spring 2002. The treatments included three irrigation rates 66%, 100%, and 133 % of crop evapotranspiration (ET) and two N rates 100% and 125% of University of Florida recommendations. Plots were arranged in a completely randomized block design with four replicates. Br a tracer for water and nitrate-N was simultaneously applied with the fertilizers in all plots. The main objective of the study was to determine the irrigation and N rate BMPs that would give optimum crop yield and yet reduce leaching of water and nutrients below the root-zone. Data showed that Br was detected below the root zone within 24 hours after application regardless of irrigation rate. During the growing season, NO3-N, NH4-N and K all leached below the root zone in all treatments. Data also showed that there was no significant effect of irrigation rate on crop yield. However, N application rate had a significant effect on yield. Based on this study, the best management practice which minimizing nutrient leaching while would maximize yield would be a combination of 66% seasonal total crop ET and 100% of currently recommended seasonal N rate.