DTU Working Paper: WP34 - The Treadle Pump (1991)
Using a treadle pump to lift water to a height of 5 metres it is possible for a farmer to irrigate approximately 0.25 hectares of land. The pump can be used for long periods of time because of good ergonomic design. The cost of construction is low and the pump can provide an appropriate technology for smallholders with little capital to spend on irrigation.
Note: scan of the original document.