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Pond Development & Construction.ppt

Pond Construction

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POND DEVELOPMENT &
CONSTRUCTION
ABULUG SCHOOL OF FISHERIES
Technical Vocational and Livelihood Education
AQUACULTURE
Pond Development & Construction.ppt
Pond Development & Construction.ppt
ACTIVITY 1.
Describe the photo above. You are give 3 minutes to answer.
 Drain ponds completely. Ensures easy collection
and elimination of old stocks, predators and
unwanted species.
DRAINING
Step 1
Step 2
PEST ELIMINATION
 totally eliminates unwanted species
 spray more in paddies with water
 if ponds cannot be dried out completely it should be
treated (7-10 days prior to stocking) to eliminate
predatory fish or other pests
Ad

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Pond Development & Construction.ppt

  • 1. POND DEVELOPMENT & CONSTRUCTION ABULUG SCHOOL OF FISHERIES Technical Vocational and Livelihood Education AQUACULTURE
  • 4. ACTIVITY 1. Describe the photo above. You are give 3 minutes to answer.
  • 5.  Drain ponds completely. Ensures easy collection and elimination of old stocks, predators and unwanted species. DRAINING Step 1
  • 6. Step 2 PEST ELIMINATION  totally eliminates unwanted species  spray more in paddies with water  if ponds cannot be dried out completely it should be treated (7-10 days prior to stocking) to eliminate predatory fish or other pests
  • 7. 1. Tea-seed cake 2. rotenone 3. tobacco dust/powder 4. commercial snail killer 5. use of lime plus inorganic fertilizer Common Pond Treatments Bureau of Fisheries & Aquatic Resources Regional Office No. 02 PHOTO: Google Search PHOTO: Google Search PHOTO: Google Search
  • 8. - wash ponds 2 days after poisoning. Washing is done at 3 consecutive days - efficient way of eliminating the effect of poison - water is left for a day Step 3 POND WASHING
  • 9. - removal of excess mud and dirt - ensures complete draining and facilitate ease of seining during harvesting Step 4 LEVELING OF POND BOTTOM
  • 10.  For old ponds, exposing pond bottom to sunlight and allowing the soil to crack is recommended.  To eliminate unwanted organisms and allow toxic gases to evaporate such as ammonia and hydrogen sulfide. Step 5 Bureau of Fisheries & Aquatic Resources Regional Office No. 02 POND DRYING
  • 11. - repair damaged dikes and other pond structures Step 6 Bureau of Fisheries & Aquatic Resources Regional Office No. 02 POND DIKE REPAIR (If necessary)
  • 12.  lime is added to correct acidity in the pond soil  pH – measure of soil acidity >>> 6.5-8.5 – ideal pH range for optimum growth of tilapia < 6.5 – ponds must be limed because acidic water will not support growth of natural foods (phytoplankton and zooplankton). Step 7 LIMING/ CONDITIONING OF SOIL & WATER Bureau of Fisheries & Aquatic Resources Regional Office No. 02
  • 13. A.Agricultural Lime or Powdered Limestone - CaCO3 – chemical formula - most commonly available - should be added to the pond bottom before filling the pond with water Typical Application Rate: 500-1000 kg/ha (for new ponds) Several forms of Lime: Bureau of Fisheries & Aquatic Resources Regional Office No. 02 PHOTO: Google Search PHOTO: Google Search
  • 14. Bureau of Fisheries & Aquatic Resources Regional Office No. 02 B. Hydrated Lime - hydrated lime also kills unwanted pests - an alternative in using teaseed cake or rotenone - it can also kill bacteria and reduce soil acidity (raise pH) Typical Application Rate: 600 kg/ha or 60g/100m2
  • 15. >>> Lime can also be a pest eliminator Lime + Inorganic Fertilizer = Piscicide Typical Application Rate: 3g (lime):1g (21-0-0-24,ammonium sulphate)/m2 - dissolved in 1 liter of water - apply in ponds at 3-5 cm water depth - will work as piscicide Bureau of Fisheries & Aquatic Resources Regional Office No. 02
  • 16. - screens on inlet and outlet pipes should be replaced and repaired - drains should be kept free of wood, trash or any other blockages - screen is installed in water inlet and/or outlet to prevent entry of unwanted species in fry or egg form - water depth of 1.0 to 1.5 meters Step 8 Bureau of Fisheries & Aquatic Resources Regional Office No. 02 INSTALLATION OF SCREENS
  • 17. FOR FRESHWATER FRESHWATER PRAWN  Installation of shelters Artificial shelters These are placed in the nursery/grow- out ponds to serve as hiding place of the post- larvae during molting. Arrange the shelters in the pond (20- 30 pcs/ 1,000 m2). Artificial shelters is needed because when prawns are soft- shelled (molting) they will be eaten or cannibalized by the hard shelled prawn. Bamboo twigs, sampaloc stems,PVC pipes or recycled materials like nets, bricks or stones, recycled mineral bottles can be used as shelters.
  • 18.  fertilizers promotes the growth of plankton that will provide natural food for tilapia  cheap way to provide food for the fish  usually done in delayed feeding technology Step 9 Bureau of Fisheries & Aquatic Resources Regional Office No. 02 BASAL FERTILIZATION
  • 19. Types of Fertilizers 1. Organic -- manure of animals such as chickens, cows, goats, pigs Bureau of Fisheries & Aquatic Resources Regional Office No. 02 PHOTO: Google Search PHOTO: Google Search
  • 20. 2. Inorganic a. single element fertilizers – contain single nutrients like nitrogen or phosphorous b. incomplete fertilizers – contains two nutrients such as nitrogen and phosphorous c. complete fertilizers – contains the three important plant nutrients (Nitrogen, Phosphorous, (K) Potassium) Bureau of Fisheries & Aquatic Resources Regional Office No. 02
  • 21. Organic Fertilizer - 1000 to 2000 kgs/ha or 57 to 85 bags/ha Inorganic Fertilizer (16-20-0) - 100 to 200 kgs/ha or 2 to 4 bags/ha Bureau of Fisheries & Aquatic Resources Regional Office No. 02 Rate of Application:
  • 22.  Fill the pond with filtered water at about 1-1.5 m Step 10 WATER FILLING Bureau of Fisheries & Aquatic Resources Regional Office No. 02
  • 23. STOCKING OF FINGERLINGS  when sufficient natural food (plankton) is present on the pond, the pond is ready for stocking  stock fish early morning or late in the afternoon where the temperature is at low level Bureau of Fisheries & Aquatic Resources Regional Office No. 02
  • 24. a. of good quality/from a reliable source b. similar age and size c. healthy CHARACTERISTICS OF FINGERLINGS TO BE STOCKED: Bureau of Fisheries & Aquatic Resources Regional Office No. 02
  • 25. 1. Pond washing is done for how many days? a. 2 days b. 3 days c. 10 days
  • 26. 2. What chemical compounds are being eliminated during pond drying? a. Nitrogen and hydrogen b. Ammonia and Sulfide c. Phosphorus and Ammonia

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