Table 6. Suggested fertilization guide for catla farming under different stocking densities
Ponds/fish size	Period of rearing (days/months)	Stocking density�	Type of fertilizers	Rate of application	Frequency	Method of application	Source of information
		(no./ha)		(kg/ha/year)	(no./month or week)
Nursery ponds
Type 1: Larvae	14 days	2.5-3.0 million	Cattle dung	10,000	15 days prior to  stocking	Broadcasting	CIFRI (1985a)
Method 2: Larvae		10.0 million	Mixture of mustard oilcake, cow dung, poultry manure (60:03:01)	11,000		Broadcasting	ICAR (2006)
Fingerling rearing ponds
Type 1: Fry		0.2-0.3 million	Biogas slurry�	30-45 tonnes/ha	Bimonthly split doses	Sprinkling	ICAR (2006)
Type 2: Fry	2-3 months	0.2-0.3 million	Cattle dung	2,500	4 equal instalments:	Broadcasting	CIFRI (1985a)
					first dose 14 days earlier to
			and		fish stocking, subsequent�
					doses - once/month
			Urea/ammonium sulphate plus	100/200	3 equal monthly instalments
			single super phosphate(SSP)/	100/35
			triple super phosphate (TSP)
Grow-out ponds
Type 1: Fingerlings		5,000-10,000	Cattle dung	10-20 tonnes/ha	Basal dose 25-30% 15 days prior fish stocking	Broadcasting	ICAR (2006)
Type 2: Fingerlings	6-8 months	5,000	Cattle dung	2000	Initial dose	Broadcasting	CIFRI (1985c)
			Cattle dung	1000	Monthly
			Urea/ammonium sulphate	25/30	Monthly
			Calcium ammonium nitrate	20	Monthly
			SSP/TSP	20-Aug	Monthly
Type 3: Fingerlings (5-6 species composite carp culture)	10 months	6,000	Lime	200	Initial application	Broadcasting	Jena et al. (2007)
			Cow dung	3 tonnes/ha	Basal dose
			Cow dung	500	Intermittent dose
			Urea	10	fortnightly intervals
			Single super phosphate	15	fortnightly intervals
			Lime	100	3-month interval
Type 4: Fingerlings (5 species composite carp culture)	210 days	6,000	Cow manure	12,000	10 equal instalments	Kept in small heaps at the pond margin and gradually allowed to diffuse	Alam et al. (1996)
					once every 2 weeks
			Diammonium phosphate	300	10 equal instalments
					once every 2 weeks
Type 5: Fingerlings (4 species composite carp culture in pens)		36,000	Cow dung	2,000	Two split doses, first 7 days		Gorai et al. (2006)
			Urea	75	and second 3 days prior
			Single super phosphate	100	stocking
			Lime	600