'More crop per drop': how to make it acceptable for farmers?

摘要: Abstract In countries facing water scarcity, governmental agencies try to transfer this constraint farmers, e.g. by encouraging them shift from traditional localized irrigation methods save water. However, shortage is often much less a problem for farmers than soil limitations, their objective being mostly maximize income per cultivated area (US$ hectare rather cubic meter of water). This discrepancy can only be solved if governments find ways ‘transfer’ through economic incentives such as pricing and/or subsidies. The aim study was address the question how match interest both managers and farmers. We aimed particularly at evaluating whether shifting drip relevant way increase farmer's income. Our analysis based on interactive impacts among economic, environmental, technical methodological parameters net productivity two crops. focused case Turkey considering crops with contrasted gross productivity, tomato cotton, characterized partial vegetation cover during large part crop cycle. A 3D energy balance model applied showing that transpiration increased up 10% when furrow irrigation. These results were used correct maximal evapotranspiration (ET m ), estimated simple “crop coefficient” ( K c ) method, then enhance estimation suggest share common in adopting tomato. Inversely, interests divergence may low/medium value cotton; combination between subsidies could agreement, but it would require equipment least 40%, low tariffs, 60%, high make acceptable. approach appeared generic enough other or environmental conditions, modernize harmonizing constraints faced