palithamahinda@yahoo.com
Nutrient Film Technique for
Small scale farmers
M.M.Palitha Mahinda Munasinghe
Farm Mechanical In...
11/25/2015mmpmm 2
Protected House for Agriculture
Classification based on Types
 Propagators & Shade Net
 Partially cont...
11/25/2015mmpmm 3
Propagators & Shade Net
•Build Up use with PVC Conduit & wood
•Shelter by UV treated polythene
•Build Up...
11/25/2015mmpmm 4
Poly Tunnels are basically naturally ventilated & climate controlled.
Used for growing vegetables, flori...
11/25/2015mmpmm 5
Structure of Net house
Structure of Glass house Structure of Roof side vent
Poly-house
Structure of Poly...
11/25/2015mmpmm 6
Tunnel (Quonset )greenhouse
Gothic arch Maxi-vent greenhouse
Gable type polytunnel
Classification on the...
11/25/2015mmpmm 7
Structure of Polytunnel/ Greenhouse
Anchor Plates Base Rail Base Plate
11/25/2015mmpmm 8
Structure of Polytonal/Greenhouse
11/25/2015mmpmm 9
Inside Structure of Polytunnel/Greenhouse
Hanging Misters
Breezy FanNFT Pipe Beds
11/25/2015mmpmm 10
Roof Top Extraction Roof Top Vent
Ventilation Louvers Side Ventilation
Polytunnel Ventilation System
Fo...
11/25/2015mmpmm 11
Mist propagation controller Water & Liquid Fertilizer filter
Low Flow Fogger Mist Nozzle
Pressure Compe...
Hydroponic Systems
 Passive Systems
 Wick ( Capillary)
 Floating Raft
 Active Systems
 Flood and Drain(Ebb and Flow)
...
Passive System-Wick
11/25/2015mmpmm 13
From the bottom reservoir nutrient solution is drawn up
through a number of wicks i...
Passive System- Raft
11/25/2015mmpmm 14
Only meant for small plants, raft hydro systems keep plants on
a "raft" floating i...
Each time the water floods from the lower reservoir
into the upper growing tray
The roots are bathed in fresh nutrients
Wh...
Provide a constant film of water and nutrients along the bottom of a
channel & flowing over the roots at all times. Part o...
11/25/2015mmpmm 17
PVC Pipe Hole Drill Bit Saw
PVC Net pot
How to make NFT system
11/25/2015mmpmm 18
Inserting Plants in the Holes
Drilling holes on PVC Pipe
Fixing Water Line to PVC pipe end
Gutting Hole...
11/25/2015mmpmm 19
Method of Cultivation
Using Grow bags
Plants growing on PVC pipes
Hydroponics comes from the Latin language and it means
working water “Hydro" means "water“ “Ponos" means “Labor"
11/25/201...
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Polytunnel construction technology for Small scale farmers

Nutrient Film Technique for Small scale farmers & Polytunnel construction technology, M.M.Palitha mahinda Munasinghe, Sri Lanka
Published on: Mar 4, 2016
Published in: Education      
Source: www.slideshare.net


Transcripts - Polytunnel construction technology for Small scale farmers

  • 1. palithamahinda@yahoo.com Nutrient Film Technique for Small scale farmers M.M.Palitha Mahinda Munasinghe Farm Mechanical Instructor (SLTS Class-1) Polytunnel Construction Technology
  • 2. 11/25/2015mmpmm 2 Protected House for Agriculture Classification based on Types  Propagators & Shade Net  Partially controlled • Rain Shelter • Net house • Poly-net house  Fully controlled • Rooftop vent Polytunnel • Roof side vent Polytunnel
  • 3. 11/25/2015mmpmm 3 Propagators & Shade Net •Build Up use with PVC Conduit & wood •Shelter by UV treated polythene •Build Up use with GI tubes •Roof Shelter by Shade Net Net houses are basically naturally ventilated and climate controlled. Used for growing vegetables, floriculture, fruit crop for market.
  • 4. 11/25/2015mmpmm 4 Poly Tunnels are basically naturally ventilated & climate controlled. Used for growing vegetables, floriculture, planting material acclimatization, fruit crop for market Poly Tunnel with polyethylene film covering to highly sophisticated and fully automated or manually operated drip and foggers systems Green houses are climate controlled. Used for growing vegetables, floriculture, planting material acclimatization, fruit crop for market and plant breeding and varietals improvement It varies from a simple poly-tunnel with polythene sheet covering to highly sophisticated, fully automated systems with Poly carbonate sheet roofing (double walled), PAR lightings, boom irrigation, rolling benches and full scale computerized systems
  • 5. 11/25/2015mmpmm 5 Structure of Net house Structure of Glass house Structure of Roof side vent Poly-house Structure of Poly-net house Greenhouse/Poly-house
  • 6. 11/25/2015mmpmm 6 Tunnel (Quonset )greenhouse Gothic arch Maxi-vent greenhouse Gable type polytunnel Classification on the basis of shape
  • 7. 11/25/2015mmpmm 7 Structure of Polytunnel/ Greenhouse Anchor Plates Base Rail Base Plate
  • 8. 11/25/2015mmpmm 8 Structure of Polytonal/Greenhouse
  • 9. 11/25/2015mmpmm 9 Inside Structure of Polytunnel/Greenhouse Hanging Misters Breezy FanNFT Pipe Beds
  • 10. 11/25/2015mmpmm 10 Roof Top Extraction Roof Top Vent Ventilation Louvers Side Ventilation Polytunnel Ventilation System Forced Ventilation
  • 11. 11/25/2015mmpmm 11 Mist propagation controller Water & Liquid Fertilizer filter Low Flow Fogger Mist Nozzle Pressure Compensating Dripper Non-Pressure Compensating Dripper Water Pump Submersible Water Pump Fertigation unit Other accessories for Polytunnel/Greenhouse
  • 12. Hydroponic Systems  Passive Systems  Wick ( Capillary)  Floating Raft  Active Systems  Flood and Drain(Ebb and Flow)  Deep Water Culture(Bubble-ponics)  Nutrient Film Technique(NFT) 11/25/2015mmpmm 12
  • 13. Passive System-Wick 11/25/2015mmpmm 13 From the bottom reservoir nutrient solution is drawn up through a number of wicks into the growing media Grow Tray & Growing Medium Air stone Air pump Reservoir Wick Water and nutrients are drawn up to the roots by capillary action
  • 14. Passive System- Raft 11/25/2015mmpmm 14 Only meant for small plants, raft hydro systems keep plants on a "raft" floating in a nutrient reservoir Floating Platform with Plants Air Line Air Stone Aquarium Air Pump
  • 15. Each time the water floods from the lower reservoir into the upper growing tray The roots are bathed in fresh nutrients When the nutrient drains back to the reservoir, fresh air is drawn through the root system refreshing oxygen to the roots Active System- Flood and Drain(Ebb and Flow) 11/25/2015mmpmm 15
  • 16. Provide a constant film of water and nutrients along the bottom of a channel & flowing over the roots at all times. Part of the roots grow down in the nutrient water and parts of the roots above the water line getting fresh air and oxygen Active Systems-Nutrient Film Technique (NFT) PVC Tube Air Pump Air Stone Nutrient Pump Reservoir 11/25/2015mmpmm 16
  • 17. 11/25/2015mmpmm 17 PVC Pipe Hole Drill Bit Saw PVC Net pot How to make NFT system
  • 18. 11/25/2015mmpmm 18 Inserting Plants in the Holes Drilling holes on PVC Pipe Fixing Water Line to PVC pipe end Gutting Holes on PVC pipe Fixing end cap & Water line to end cap
  • 19. 11/25/2015mmpmm 19 Method of Cultivation Using Grow bags Plants growing on PVC pipes
  • 20. Hydroponics comes from the Latin language and it means working water “Hydro" means "water“ “Ponos" means “Labor" 11/25/2015mmpmm 20 Using PVC pipes for NFT