Appropriateness and sustainability of Micro- irrigation system in the hills of Nepal.

Micro-irrigations(i.e.Sprinkler and Drip) are the alternative method specially in the hilly areas. Sprinkler and Drip are appropriate and sustainable in the hills of Nepal due to the following reasons:

• Micro- irrigation system requires relatively high pressure which can be easily provided through gravity in the hills.
• It needs clean sediment free water, to avoid clogging of its component, which can be obtained from springs.
• The hill slopes are steep and can be eroded with other method of water application such as: canal irrigation.
• Micro irrigation systems require relatively less amount of water and in the hills, at the higher altitude water shortage may occur but by pumping of water from rivers this irrigation system can be enhanced for better crop yield. This means it suitable even in the area of water shortage.
• Crops in the hills can be sown in rows having appropriate lateral spacing(rows spacing) and spacing between them itself and they can be irrigated by Sprinkler and Drip with less amount of water for better yield. 
• Light soils in the hills are poorly suited to growing rice hence trying to provide irrigation system for growing rice may be proved uneconomic. Hence promoting for growing vegetables or other high value crops can be done with micro- irrigation system.
• Portable micro-irrigation systems are preferable to the farmers in the hills of Nepal because they live in uphills which is several hours walking distance away from the cultivated land. So portable irrigation system is appropriate and sustainable as it can be taken to the any desired place by the farmers.