Friday, 7 February 2014

Understand How Drip Irrigation System Operates

By Jayne Rutledge


Farmers prefer drip irrigation system over sprinkle and flood systems because it saves a lot of water. The water is dripped at the root area of the target plant through a network that controls the amount. Emitters are placed below the surface or drippers installed at the root. A network of pipes and tubes is used to deliver water into the rows.

Some quotas refer to the method as micro, localized or trickle irrigation. The sizes of pipes and tubes vary depending the distance from the source of water. Other features common at the area include valves and emitters. The same network may be used to deliver pesticides and fertilizers where the amounts are strictly controlled. This will prevent wastage that would be occasioned by flooding or sprinkling methods.

The use of emitters came as a solution to blocking of holes by tiny particles present in water. The amount of water released depends on velocity settings. Unlike traditional systems, the modern assembly provides longer and larger passages. Water is supplied from a pressurized source or pump. Natural gravity can supply water if the area is sufficiently slanted.

Water filters or a filtration mechanism is required. The options available include sand separators like media filters, disc filters, screen filters and hydro cyclone. Depending on the plants being irrigated and their need for herbicide and other chemicals, fertigation equipment and chemication systems can be installed. You need to install a system that prevents back flow to avoid contaminating of water sources or other areas where chemicals are not needed.

Each section requires a pressure regulator depending on water needs for each crop. It allows you to regulate the amount of water available to the plants. Electronic, hydraulic or hand operated safety valves are installed. An effective design is done by professionals who determine the sizes of pipes used at different sections. Poly-tubes are used to drop water at the root of the plant.

Different sections of the networked pipes are connected using poly fittings. It takes seasoned professionals to design and install an effective system that reflects the needs and demands of the area. The size of emitters and drippers depend on the crops though there are flexible ones for use on different areas. They determine how much water is dripped. The pumps are run by hands or powered by electricity, solar or generators.

Filters reduce the need to constantly address clogging of pipes. Water drawn from dams and rivers or recycled from municipal facilities contains particles and other contaminants that necessitate the use of filters. The filters are best fitted near drippers because these are the areas prone to clogging. Such attention will prevent the particles entering the system through the dripping holes from blocking the tubes.

Farmers using municipal water from recycling plants are restricted from flood or sprinkle irrigation. This is because of its quality which is below portable standards. Their only option is the drip irrigation system. The same network used to deliver water can be used for chemicals and other pesticides. It is recommended because despite using little amount of water, the method is still effective. Extension officers should be used to determine the amount of chemicals used.




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