Efficient irrigation technology

Published: 28 May 2019
Last edited: 28 May 2019

Conventional irrigation in the area of the solution had been furrow irrigation only. This technology requires large amounts of irrigation water. In cases of shortage of irrigation water, in particular in drought situations, which due to climate change are increasingly frequent, furrow irrigation is not possible - the water just cannot reach all parts of the field and be taken up by the plants.

 

In the case of potatos increasing heat causes stress to plants.

 

As more efficient and climate change adapted irrigation technologies of  drip irrigation have been introduced. Drip irrigation allows for a locally targeted provision of irrigation water to individual plants. Additionally it can be used to apply fertilizer in correct dosage and extremely efficiently.

 

The sprinkler irrigation is highly suitable for potatoes and can help to  reduce heat stress in cases where sufficient water of suitable quality is available. 

Classifications

Category
Technical interventions and infrastructure
Scale of implementation
Local
Phase of solution
Planning phase
Implementation
Monitoring
Documentation and dissemination of results

Enabling factors

The  readiness of farmers to try new irrigation technologies was much driven by the increasing awareness about the limitations of the conventional furrow irrigation, experience of water shortages and the policy of the national and regional governments to apply water efficient irrigation technologies, e.g. in the newly irrigated lands of Sayhun town, which are fully dependent on the costly pump irrigation with water from Syrdarya river. The need was met by the availability of engineering and agricultural knowledge and funding provided by GIZ.

Lessons learned

Drip and sprinkler irrigation have  been successfully tested in various crops, but the economic viability of these efficient irrigation technologies varies. Drip irrigation is only economically viable where limited irrigation equipment can allow for production of high yield of expensively sold crops, e.g. fruits and melons. For mass crops, like onion and potato, the investment required is too high compared to the prices achieved for the harvest. However, if irrigation water becomes more scarce, irrigation equipment becomes more affordable and/or prices of agricultural products increase, this situation may change and drip irrigation may become affordable for such crops as well.

 

Sprinkler irrigation already nowadays can be efficient where increasing temperatures challenge the productivity and quality of potato crop.