5. What is Hydroponics?
• It is technique for growing plants without soil. Utilizing this
technology, the roots absorb balanced nutrient dissolved in
water that meets all the plant developmental requirements
6.
7.
8. Hydroponics
• The nutrients used in hydroponic systems can come from an
array of different sources; these can include, fish waste,
duck manure, or purchased chemical fertilizers.
9. Plant Growth Requirement
• Water
• Light “ Need 8-10 hours to produce well”
• Air
• Nutrients (usually soil)
•Needed in large quantities
•nitrogen, phosphorus, potassium, calcium,
magnesium, and sulfur.
•Needed in tiny amounts
•iron, manganese, boron, zinc, copper, molybdenum,
and chlorine.
• Support
10.
11. System Requirement
• PH Control
5.8 to 6.4 , or slightly acidic
• Horticultural Lighting
High Pressure Sodium Lamps
• Temperature and Environmental Control
“22 to 26 ºC”
12. Advantages
• Some hydroponic growers got many times greater yields than
conventional methods, Because hydroponically grown plants dip
their roots directly into nutrient-rich solutions, they get what they
need much more easily than plants growing in soil.
• Smaller Growing Area and grow anywhere.
• Less water and fertilizer is needed
13. Disadvantages
• Cost of initial investment on hydroponic systems is high.
• Hydroponic production is management, capital and labor
intensive.
• A high level of expertise is required.
• Daily attention is necessary.
• Specially formulated, soluble nutrients must always be used.
• Some water born diseases can spread rapidly in recirculation
system.
16. Aeroponics
• Aeroponics is an indoor gardening practice in
which plants are grown and nourished by
suspending their root structures in air and
regularly spraying them with a nutrient and water
solution.
19. Aquaponics
• Aquaponics is a combination of aquaculture, which is
growing fish and hydroponics which is growing plants
without soil.
• Aquaponics uses these two in a symbiotic
combination in which plants are fed the aquatic
animals’ discharge or waste. In return, the vegetables
clean the water that goes back to the fish.
20. Aquaponics
• Microbes play an important role to the nutrition of
the plants. These beneficial bacteria gather in the
spaces between the roots of the plant and
converts the fish waste and the solids into
substances the plants can use to grow.
22. Aquaponics Requirement
• High Pressure Sodium Lamps
400 watts
1.5m above tables
• Daily Testing
Dissolved oxygen “DO”
Temperature
Total ammonia nitrogen “TAN”
• Weekly Testing
Iron , Alkalinity , Nitrate , Potassium , Calsium
23. Aquaponics Requirement
• PH Control
More efficient at PH 7.5
Optimum PH for nutrient solubility is 6.5 or slightly lower
Low PH ammonia accumulates to level that are toxic to fish
• Ensure good aeration
Fish, plant and bacteria require adequate levels of dissolved
oxygen “DO”
Maintain DO > 5 mg/liter
24. Vertical aquaponics
• One of the greatest aspects of
aquaponics is its ability to grow an
incredible amount of food in a very
small area. No method does this
better than vertical aquaponics.
Plants are stacked on top of each
other in tower systems, water flows
in through the top of the tower, and
flow through a wicking material that
plant absorb water and nutrient
from.
25. Vertical aquaponics
• The water then falls into a
trough or directly into the fish
tank. This form of agriculture
makes the most of each
square foot of space and
works very well with leafy
greens, strawberries and other
plants that do not require
support to grow.
26. Benefits of Aquaponics
• Aquaponics is a way to grow your own fish and vegetables at the same
time.
• There is no need to use fertilizers because the fish provide rich nutrients
for the plants.
• In aquaponics, less water is used for the crops. Research has shown
that aquaponics gardens use 1/10th of the water you would use for soil
garden.
• You can grow plants in very small space, and have a great harvest.
27. Benefits of Aquaponics
• Chemicals can’t be used because they would harm the
fish.
• Reduce damage from pests and diseases.
• Plants grow fast
• Water is used in a closed system and circulated
effectively, reducing the consumption of water.
