Table 3. Suggested fertilization guide for mullet farming under different different stocking densities (No./ha/year)/ total biomass of fish (kg/ha)
Type of fertilizers	Stocking rate	Rate of application (kg/ha/year)	Frequency (No./month)	Method of application
Organic fertilizers
Cow manure		7 500		For inland saline (13�21 ppt) water ponds (a)
In China
Pig and cow manure	1.5�3.0 million/ha (only larval rearing)	750 (before stocking)		Larvae are stocked when enough zooplankton (mostly copepods and rotifers) have grown (b)
Inorganic fertilizers
In Egypt
Superphosphate		216�240	1	In brackish water ponds for Mugil capito (c)
Amonium nitrate		216
Organic and inorganic fertilizers
In Egypt
Cow manure		3840	2	Fish were stocked in cages in polyculture with Nile tilapia  (d)
Superphosphate		620
Urea		930
In Egypt
Cow manure	5 800 fish/ha (35g/fish)	1 000 (before filling)	0	Cow manure applied by broadcast method before filling and other fertilizers applied biweekly after fish were stocked  (e)
Chicken manure		520 (after stocking)	2
Urea (46% N)		52	2
Superposphate (32% P2O5)		52	2
Data source: (a) Garg et al. (2006), (b) Zheng (1987), (c) Tacon (1987), (d) Essa (1996), (e) Abd El Ghany et al. (1995)