2020-08-072020-08-072010Abbassa International Journal of Aquaculture, Special Issue 2010 The third scientific conference, Al Azhar University, Cairo 17-18 October 20101687-7683https://hdl.handle.net/20.500.12348/4284The purpose of the present study was to compare the effect of urea and ammonium nitrate as nitrogen fertilizer sources with mon superphosphate on water quality and the productive performance of hybrid tilapia fish in outdoor fish ponds.fertilizerpond cultureEffects of two nitrogen fertilizers on water quality and hybrid tilapia performance in fish farmsJournal Article