Requirements for Pond Construction

Construction of Fish Culture Pond

A) Criteria of Site Selection

Land should have more water holding
     capacity.
Land Should not be more alkaline or acidic.
Low lying area are more suitable.
Site must have assured water supply.
Outlets and Inlets of ponds should be well
     built.
Site should be approachable with road or     path.
Site must be away from floods affected
     areas.

B) Permissible parameter of soil & water

SOIL :-

Sand (%) - 40
Silt (%) - 20
Clay (%) - 40
Organic carbon (%) - 0.5-2.0
Available Nitrogen (mg/100gm) - 20-75
Available Phosphorous (mg/100gm) - 2 10

WATER :-

Colour - Light Green
Temperature (Degree Centigrade)- 25 - 35
Transparency(cm) - 30 - 40
pH - 7.0 - 8.6
Dissolve Oxygen (mg/lt) - 4 -10
Carbon Dioxide (mg/lt) - 3 - 7
Total Alkalinity (mg/lt) - 60 - 230
Total Nitrogen (mg/lt) - 0.05 -1.5
Phosphorous (mg/lt) - 0.05 -7.0
Salinity (ppt) - <5
Ammonia (ppm) - 0 - 0.1
Calcium (ppm) - 75 - 150
Chlorine (ppm) - <0.003
Total Dissolve solids (ppm) - <80
Potassium (ppm) - 0.5 - 10
Iron (ppm) - 0.3 - 10

Time Scheduling for Fish Culture in Pond (PERT/CPM)

EVENT	ACTIVITY	NET DURATION TIME (DAYS)
A	Identification of site	10
B	Formulation of Project (preparation of plan & estimates, Bank loans etc.)	30
C	Training in Fish Farming	15
D	Construction/Renovation of Pond	45
E	Stocking Management (Liming, Manuring, Filling of water, Growth of plankton and stocking of seed)	18
F	Soil and Water Analysis	Quarterly, After 60 days of seed in the pond.
G	Sale of Fingerlings	30 days after stocking of seed
H	Trial Netting	Every Month
I	Partial Harvesting	After 150-180 days of Stocking. (10 Jan)
J	Final Harvesting & Marketing	After 250- 260 days of stocking.

Construction of Prawn Culture Pond

A - Criteria of Selection of Site

Site must be easily approachable with road
or path.
Site should be free from floods and seepage.
Assured water supply system.
Arrangement of outlet of water be made.

B - Permissible Parameters for Soil & Water

I) SOIL :-

Texture
- Sand (%) - 40
- Silt (%) -20
- Clay (%) - 40
Colour - Blackish brown
Moisture (%) - 35-40
Water Retention Capacity (%) - 40
Total Alkalinity (mg/100gm) - 0-150
Total Hardness (mg/100gm) - 50-180
Phosphate (mg/100gm) - 0.5-2.0
Salinity (ppt) - <5

II) WATER :-

Temperature (Celsius) - 28-30
Dissolved oxygen (mg/lt) - 5-10
Visibility (cm) - 35-40
Color - Light green
pH -7.0-8.5
Carbonate (mg/lt) - 30-50
Total Alkalinity (mg/lt) - 50-180
Total Hardness (mg/lt) - 50-150
Conductivity (mohs/cm) - 20-1500
Salinity (ppt) - <5
BOD (mg/lt) - <30
COD (mg/lt) - <40
Phytoplankton (nos/lt) - >500
Zooplankton (nos/lt) - >500

Time Scheduling for Prawn Culture in Pond

EVENT	ACTIVITY	NET TIME DUARTION (Days)
A	Selection of site & beneficiary	30
B	Training & Study Tour	15
C	Formulation of Project & Sanction of loan from bank	30
D	Construction of Pond & Infrastructure	45
E	Nursery pond preparation & Stocking	15
F	Stocking of Seed in Grow out of Pond	45
G	Trial Netting	After 60 days of Stocking of seed
H	Soil & water analysis	quarterly
I	Water exchange	Every month after 60 Days of stocking.
J	Partial Harvesting	After 150 days of Stocking.
K	Total Harvesting	After 220-245 days of Stocking