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Always run Drip Tape at nominal operating pressure. viz 0.7 kg/cm2 (10psi) for wall thickness 6 and 8 mil and 1kg/cm2 (14psi) for wall thickness more than or equal to 10 mil for 16 mm (5/8”) size of tubing.
The maximum operating pressure for Drip Tape shall not be more than 1.2 kg/cm2 (from emitter functioning point of view) at the same time ensure that pressure shall not be too much below the recommended operating pressure. Minimum 100 micron filtration recommended. Exact filtration type and precision depends upon quality of source water. 6 mil and 8 mil tubings are suitable for one crop season. However useful life may be extended to 2 to 3 crop seasons subject to due care and maintenance. 10 mil onwards tubing can be used for multi-season subject to due care and maintenance. Subsurface use of Drip Tape may improve the life to multi season. Provided proper operational and maintenance guidelines are followed. Always position Drip Tape with emitter facing upwards. Use Tape Lock™ fittings for leak proof jointing. Safeguard Drip Tape from mechanical abuses like pulling the tubing, over-pressurising, movement of man/machine on the tubing. Remove sharp objects like stones, twigs etc. away from the tubing.
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De-coiling and coiling of Drip Tape shall be done carefully. It is recommended to use proper coiling equipment to avoid mechanical damages.
Chemical treatment shall be done at frequent intervals. Frequency of chemical treatment can be decided by the quality of source water. Follow procedure given in Indian Standard IS 14791. Run the system daily to keep continuous wetted strip. Running the system daily helps to avoid salt precipitation inside the tubing/ emitter. Always keep the field wet (wetted strip) to reduce rodent problem. Use of chlorination or chemicals like trifluriline can help to avoid root intrusion problem in subsurface application of Drip Tape. Avoid water stresses (under irrigation) to avoid root intrusion problem. Always maintain the required moisture level within the root zone. Avoid over irrigation, which promotes weeds which may also lead to root intrusion problem. In subsurface application maintain proper depth of tubing. If tube is placed at too shallow depth, may lead to water & salts rising up to the surface due to capillary action & may result into root intrusion. If tube is placed too deep, may lead to water percolation beyond root zone. Always put sufficient air release cum vacuum breaker valves in the system. This will avoid emitter sucking the mud / soil.
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