Components of drip irrigation system

a. Head system:

• Consists of a pump and an overhead tank.
• Pump is responsible for uplifting the water and collect to overhead tank.
• Overhead tank helps in storage of water which maintains a head level of 5-7 m.

b. Central distributary system:

• It contains following parts:

c. Fertilizer tank:

• Present at head of the drip irrigation system for applying fertilizers in solution directly to the field along with the irrigation water.

d. Filter unit:

• It cleans the suspended impurities in the irrigating water so as to prevent blockage of holes and passages of drip.

e. Pressure regulator:

• Provides the pressure required to pass through the emitters.
• Provides the pressure of 0.15 – 0.2 kg/cm².

f. Main line:

• Made up of PVC pipe having the diameter from 20-40 mm.

g. Secondary line or sub-main line:

• Made of PVC pipe having the diameter of 20-40 mm.
• A discharge regulator is attached in its head to control the discharge.

h. Tricle line:

• Made of PVC pipe having diameter of 10-20 mm.
• Distance between this line varies from 60-90 cm.

i. Drip nozzle or emitter:

• Allows the water to emit at very low rates usually in trickles.
• Distance between nozzle varies from 40-60 cm depending upon the crop.
• Discharge from one nozzle carries from 2-10 liter/ hr.