Basic Need For Fertigation 2- Irrigation System / Keperluan Asas Fertigasi 2 - Sistem Pengairan

The most important element in any irrigation system is a dependable water supply. Traditionally, most of the world's major irrigation systems receive water from great rivers that have their tributaries in snow-clad or rain-swept mountains. For the Fertigation (drip irrigation)/Hydroponic irrigation method, it is very crucial that the water supply fulfill both quality and quantity requirements. Water supplies can be obtained by numerous types of water resources projects, such as wells, dams, or reservoirs. The water supply must be from clean, unpolluted resources, odorless and clear with the right value in terms of pH, electron conductivity (E.C) and TDS. Example is tab water, water from lake, streams and wells. The beginning of a dripping system is the water source. This is usually a tap into an existing (city) water line or a pump that pulls water out of a well or a pond. The water travels through pipes from the water source through the valves to the tubings and then the driper. It is also advised to install a special filter to filter any sediments, impurities and also chlorine (because plants don't need chlorine). The pipes from the water source is then collected in a nutrient tank whereby nutrient is added and measured according to the plant's requirements. A pump is installed to pump out the water with nutrient up to the irrigation valves that are called "mainlines", and the lines from the valves to the driper are called "lateral lines". Most piping used in Fertigation systems are HDPE and MDPE or PVC or PEX plastic pressure pipes due to their ease of installation and resistance to corrosion. Sub-irrigation in Fertigation (drip irrigation) system requires fairly sophisticated, expensive equipment and management. Advantages are water and nutrient conservation, and labor-saving through lowered system maintenance and automation.