Table18. Suggested fertilization guide for milkfish farming under different stocking densities
Suggested stocking density (1 500�3 000 fish/ha)/total biomass of fish (500�1 000 kg/ha)
Type of fertilizers*	Rate of application (kg/ha/crop)	Frequency (no./month or week)	Method of application
Organic
Chicken manure	1 000�2 000	Initial	broadcast
Inorganic
16-20-0 + 46-0-0	50 kg/ha +	Initial and every two weeks throughout culture period	broadcast
	15 kg/ha		broadcast/platform
16-20-0	50 kg/ha	initial and every two weeks throughout culture period	broadcast
18-46-0	25 kg/ha		broadcast/platform
Suggested stocking density (8 000-15 000 fish/ha)/total biomass of fish (1 500-3 500 kg/ha)
Type of fertilizers	Rate of application (kg/ha/crop)	Frequency (no./month or week)	Method of application
Organic
Chicken manure	1 000�2 000	Initial	broadcast
Inorganic
16-20-0 + 46-0-0	50 kg/ha +	Initial and every two weeks except last month of culture when there is feeding	broadcast
	15 kg/ha		broadcast/platform
16-20-0	50 kg/ha	Initial and every two weeks except last month of culture when there is feeding	broadcast
18-46-0	25 kg/ha		broadcast/platform
*Both organic and inorganc fertilizers are applied in ponds