information about soilless agriculture..there types and advantages & disadvantages also included in my presentation

1. Soilless agriculture
(Hydroponics culture/water
culture/nutrient culture)
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D.D.A.S.PERERA
12/AG/009
EG-867

2. content
• Introduction
• Reasons to hydroponics
• Type of soilless culture
• Advantages of soilless culture
• Disadvantages of Soilless culture
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3. Introduction
• Technology of growing crop in a complete
nutrient solution with or without a solid
phase.
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4. Reasons to hydroponics
• Overcome poor soil conditions
-salinity
-Rocky,Sandy,gravelly soils
-Pathogens
• Shrinking of arable land
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5. Reasons to hydroponics
• To get high yield and quility .
• Readily available nutrients(energy saving)
• Provide optimum resources for the growing
plant.
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6. Type of soilless culture
1.Solution Culture
2.Aeroponics
3.Solid media culture
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7. 01.Solution culture
Solution
culture
Circulating
methods
Nutrient Film
Technique(NFT)
Deep Flow
Technique(DFT)
Non circulating
methods
Root Dipping
Technique
Floating
Technique
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8. Circulating methods
Nutrient film
techniques
Deep flow
technique
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Plant root are directly
exposed to nutrient
solution
Use 2-3cm deep
nutrient solution

9. Non circulating methods
Root dipping
technique
Floating
technique
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Plant grow in small
contains filled with
growing media
Similar to root dipping
technique
Solution is aerated
artificially

10. 02.Aeroponics
• plant root hang in the air are misted with the
nutrient solution
• Misting is done for avoid rapid drying
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11. 02.Aeroponics
• Root absorbed the nutrient from the nutrient
film adhere to the roots
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12. 03.Solid Media Culture
• Plant roots are developed in a growing
medium
• The substrate irrigated with a Complete
nutrient solution
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13. Solid media
culture
Grow bag culture
Hanging bag culture
Trough culture
Pot culture
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14. Grow bag
technique
Hanging bag
technique
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Poly bags are arranged in
rows
Filled with growing media
(coir dust,peat,vermiculite)
Light weight media
used to grow crops

15. Trough colture Pot culture
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Plant grown in narrow trenches
in the ground and above ground
troughs
Plants are established
in plastic
pot/polythene bags

16. Advantages of Soilless
agriculture
• Continuius cultivation in the same land
• Low cost and time for land preperation and
soil sterilization
• Low labour requirement
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17. Advantages of Soilless
agriculture
• Maintenance of clean products
• Year-round production
• Low soil and water born disease
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18. Disadvantages of soilless culture
• Higher initial cost
• High operational cost
• Requirement of technical know how
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19. Disadvantages of soilless culture
• Needs thorough knowledge on the agronomy
and crop physiology
• Requirement of quality water
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