Integrated Management for Drainage Water of Fish Ponds in Agriculture Using Sprinkler Irrigation System

One of the alternative solutions via traditional or non traditional resources such as reusing the drainage water of fish Ponds "DWFP". Two field experiments were carried out during growing seasons 2014 and 2015, it was executed in research farm of National Research Centre, El-Nubaria Province, El-Behira Governorate, Egypt. The aim of this study is maximize utilization from drainage water of fish ponds in irrigation of crop, through the study of the effect of irrigation using two types of water (drainage water from fish ponds "DWFP" and traditional irrigation water "TIW") and fertilization rates "FR" (40%, 60%, 80%, and 100% from recommended dose of N) on soybean growth parameters, seed Yield, harvest index "HI", water productivity "WP ", oil content and protein content. Statistical analysis of the results indicated that, the highest values of seed yield (3.88 ton ha-1), HI, WP, oil (19.89%) and protein content (35.63%) of soybean were achieved under DWFP. Also, the highest values of dry weight/plant, leaves area/plant and chlorophyll content (%), were obtained by using drainage water from fish ponds compare with traditional irrigation water. Effect of interaction between DWFP and FR100% N recorded the highest significant values of seed yield (4.43 ton ha-1), WP, oil content (22.52%) and protein content (39.96%). It could be concluded that under the conditions of the experiment or any other similar conditions irrigation using drainage water of fish ponds are recommended as a new source for irrigation due to their superiority in seed yield/fed. with higher water productivity (WP) as well as will save 100% from traditional irrigation water and save 20% from minerals fertilizer of nitrogen under sprinkler irrigation system and consequently higher net profits/fed.