Hydroponics is a method of growing plants without soil, instead using mineral nutrient solutions in a water solvent. It involves growing plants in gravel, sand, clay pellets or other inert media while their roots are exposed to the nutrient-rich water. The document discusses the history of hydroponics, the different types of systems used, and the nutrients required by plants. It notes the advantages of hydroponics include faster growth, fewer pests/weeds, and the ability to grow in any conditions, but that initial costs are higher and daily attention is needed. The commercial hydroponics industry is rapidly expanding as soil-based agriculture becomes more difficult.

1. Hydroponic
s
PRESENTED BY-
Amiya KumarMandal
M.Sc Part -1

2. Contents
1. Introduction
2. Plants need
3. Media for Hydroponics
4. Nutrients Required
5. How to manage nutrient solution
6. History
7. Types of Hydroponics
8. Advantages
9. Disadvantages
10. Conclusion
11. References

3. What is Hydroponics
• Hydroponics comes from the Latin
language and it means working water.
• "hydro" means "water"
• "ponos" means "labor".
Soil less growing!

4. Plant Needs
What is needed for a plant to survive?
• Water
• Sunlight
• Air
• Nutrients (usually soil)
• Structural support

5. Soil Less Growing?
What is used as a growing media is soil isn’t
present?
- Gravel -Rockwool
- Sand -Vermiculite -Coir etc.

6. Nutrients Required
Macronutrients
Also Called as
Essential Nutrients
Calcium
Potassium
Nitrogen
Phosphorous
Magnesium
Micronutrients
Also Called as Non-Essential
Nutrients
 Manganese
 Sulphur
 Cupper
 Boron
 Iron
 Zinc
 Molybdenum

7. Manage the Nutrients
Sol.
pH
EC ( Electrical Conductivity)
Oxygen
Tempeture

8. Why?????
Q. Why have scientists and horticulturists
experimented with different methods of
hydroponics?
A. It is a simple fact that some people
cannot grow in the soil in their area (if
there is even any soil at all).

9. History
The process of hydroponics growing in
our oceans goes back to about the time the
earth was created. Hydroponic growing
preceded soil growing.

10. History
• One of the 7 wonders of the ancient world.
• Hanging gardens of Babylon in (Iraq)

11. History
Floating gardens of the Aztecs of
Mexico
CHINAMPAS
Built by Incas and Aztecs
Between 14th
-16th
century
A.D

12. Types of hydroponics
Non-circulating
hydroponics system
Circulating hydroponics
system

13. Advantages
Faster Growth
No Weeds or Pests
Great Plant Quality and Taste
Grow in Any Condition
Smaller Growing Area

14. Disadvantages
Initial costs higher
Deeper knowledge is needed
Daily attention is necessary
If introduced, diseases can easily
spread
Some water born diseases can
spread rapidly in recirculation
system.

15. Conclusion
 The Commercial Hydroponics industry
is a successful industry and is rapidly
expanding.
 The industry is expected to grow
exponentially as conditions of soil
growing is becoming difficult.
 Government intervention and university
interest can propel the use of this
technologyOur Iceberg is melting,
Let’s do something…QUICKLY..

16. ReferencesReferences
1. Hydroponics-A practical Guide for
Soilless Growing
2. Hobby Hydroponics
3. http://www.kidsgardening.com/HYDR
OPONICSGUIDE/hydro1-1- intro.asp
1. Hydroponics-A practical Guide for
Soilless Growing
2. Hobby Hydroponics
3. http://www.kidsgardening.com/HYDR
OPONICSGUIDE/hydro1-1- intro.asp