Introduction History of DIS System components Advantages Drip irrigation payback wizard Drip irrigation scheduling Important tips for system components Basic system operation System maintenance Disadvantage DIs

1. DRIP
IRRIGATION
1
SUBMITTED BY-
HARSHITA SINGH
CIVIL ENGINERRING

2.  Introduction
 History of DIS
 System components
 Advantages
 Drip irrigation payback wizard
 Drip irrigation scheduling
 Important tips for system components
 Basic system operation
 System maintenance
 Disadvantage DIS
2 CONTENTS

3. DRIP IRRIGATION
SYSTEM
Drip Irrigation is also known as
Trickle IrrigationTrickle Irrigation in which water is
applied in the form of drops
near the base of the plant .
In drip system water is conveyed
through a system of flexible pipe
lines.
3

4. DRIP IRRIGATION
SYSTEM
4
 Drip system reduces water requirement
of the plant by maintaining minimum soil
moisture.
 This technique is also known as FeedingFeeding
Bottle Technique.Bottle Technique.

5. 5

6. 6

7. SYSTEM COMPONENTS
A Pump to lift water
Ahead tank to store the water and maintain a
pressure head of 5 to 7 m
Central distribution system
Mains and secondary lines
Trickle lines
Plastic nozzles
7

8. 8
Drip Irrigation System

9. Components of a Drip
Irrigation System
EMISSION DEVICES :
durable
resistant to clogging
Many shapes and styles
 Flow rate 0.5 – 10
gal./hr
 Pressure compensating
9

10. Components
Continue…….
 Filters:
 used to remove organic and inorganic
debris
 sand media filters,
 screen filters
 disk type filters
10

11. Components
Continue…….
 • Chemical Injectors :
Maintenance
supply nutrients
 Acid: prevent calcium precipitationAcid: prevent calcium precipitation
 ChlorineChlorine
 control biological activity: algae and bacterial slimecontrol biological activity: algae and bacterial slime
 deliberately precipitate irondeliberately precipitate iron
11

12. 12
Drip Irrigation TubingDrip Irrigation Tubing
(Clear Demo Tubing)(Clear Demo Tubing)

13. Components
Continue…….
 Central Distribution System :
Which filters the water and add
nutrients and regulate pressure and
amount of water to be applied.
 Trickle Lines:
These lines consist of 10-20mm dia PVC
pipes which are perforated at a
distance equal to spacing of the crop.
13

14. 14

15. Components
Continue…….
 Air/vacuum Relief Valves:
 used to expel air that builds up in the
pipeline network during startup and
operation.
 allow air to enter the pipeline network as
water exits at shutdown. This avoids
undesirable vacuum suction in both the
pipelines and the emission devices.
 installed at high elevation points, at control
points, and at periodic pipeline intervals.
15

16. Advantages of Drip
Irrigation
INCREASED REVENUE FROM
INCREASED YIELDS
EARLY MATURITY
WATER SAVING
FERTILIZER SAVING
ENERGY SAVING
LABOUR SAVING
16

17. Advantages
continue……..
 MARGINAL LAND & UNDULATED LAND
CAN BE IRRIGATED
 USE OF SALINE WATER IS POSSIBLE FOR
IRRIGATION
 LESS PROBLEM OF DISEASE AND PEST
 MAKES INTERCULTURE OPERATIONS
EASY
 DECREASED PESTICIDE COSTS
 IMPROVED ENVIRONMENTAL QUALITY
17

18. Drip Irrigation Payback
Wizard
In as few as four steps, this payback wizard will
quickly provide an estimate of how long it will
take to recover the costs of investing in a drip
irrigation system and estimate how many
additional acres could be irrigated with
conserved water.
18

19. 19

20. Drip Irrigation
Scheduling
 Drip Irrigation scheduling is the
process of deciding when to run the
drip irrigation system, and for how
long. It is a complex topic but of utmost
importance because it influences
whether the crop gets the right amount
of water and nutrients, and whether
valuable water is wasted to runoff or
deep percolation.
20

21. Important Tips for
System Components
 Water
 Pump
 Backflow Prevention
 Filtration System
 Chemigation System
 Flow Meters and Pressure Gauges
 Control Valves
 Air/Vacuum Relief (AVR) Valves
21

22. Basic System Operation
 Monitor Key Operating
Parameters-Once the irrigation
season is under way, the system’s
pressures and flows should be
monitored, the flush water
assessed, and system integrity
ensured on a routine basis
22

23. System Maintenance
 Apply Chemicals
 Flush the System
 Control Pests
 Service the Filtration System
 Service the Accessory Equipment
 Winterize the System
 Startup Procedures
23

24. Comp. drip,sprinker,gravity24

25. Disadvantage DIS
 Drip irrigation depends on extremely clean water
 The largest problem is that the drippers get clogged
 Drip irrigation requires a lot of hoses and they have to be
moved every year if you practice crop rotation
 Drip irrigation is expensive
 Because the surface isn’t watered so certain degree of salting
25

26. 26