This document discusses the fertilization of fish ponds using inorganic and organo-chemical fertilizers to enhance productivity by increasing essential nutrients. It highlights the historical use of organic manure and the more recent adoption of inorganic fertilizers, such as DAP and urea, to maximize fish yield efficiently. The aim is to create a more hygienic and economical method of fish production compared to artificial feeding.

1. Fertilization of Fish
Ponds:
Inorganic and Organo-Chemical
Fertilizers

2.  Fertilization of Fish Ponds

 The primary purpose of fertilization is to increase its productivity by
increasing the essential nutrients

 Is to direct all the primary, secondary and tertiary levels of
productivity towards the maximum yield of fish

 Ensure a more hygienic, economic and simpler means of increasing
fish production compared to artificial feeding

 The use of organic manure known to Chinese as far back as 4th and
5th centuries, however, use of inorganic fertilizers has recently been
developed

3. Inorganic fertilizers
• May be grouped as under
1. Limestone & lime
2. Phosphorus
3. Nitrogen
4. Potassium
5. Magnesium
6. Trace elements
7. At present mostly DAP & Urea are used to
provide most of the necessary elements in
fish pond