An experinenr to assess the efficacy of fertilizer (urea) on the growth rate of culturable carps viz. Labeo rohita, Catla catla and Cirrhina mrigala was conducted in the control and treated ponds. Average weight gains in control pond were 231. 277 and 319 g for three tish species respectively, while the weight gained in treated pond was 260, 331 and 362 g respectively. Net fish production in control and treated ponds was 43.64 and 61.97 kg/pond/year. Treated pond thus showed 1.42 times higher net fish roduction than the control )ond. Key words: Culturahle carps. efficacy of fertilizer. growth rate
