This study investigate the influence of supplemental irrigation and rainfall on soil environment with a view to optimizing ware use and enhance maximum production of okra fruit on an alluvial soil in South Western Nigeria. It also evaluated the combined effort of rainfall and irrigation impact assessment on soil degradation. A randomized complete block design with three levels of irrigations was employed. There were three levels of irrigation in addition to the natural rainfall. The irrigation water levels include 6, 12, and 18mm per week. Soil cultivation was maintained under minimum tillage method. Soil moisture potential decreased in magnitude with frequency of irrigation, soil temperature was progressively lowered with irrigation. Rainfall aggressiveness responds significantly to prevailing weather conditions. However, surface run-off and soil erodibility became significant with increasing watering regime. Fruit yield of okra increased proportionately with increasing frequency of irrigation until the field capacity was achieved.