PRO-PRODUCTION is a Slovenian Operational Group (OG) developing and promoting an irrigation decision support system to increase water use productivity at farm level. “Key factors must be considered to achieve the best results with irrigation: soil properties, plant growing phase, soil water content, weather forecast, timing and quantity of water applied, … Suboptimal irrigation increases water use and therefore also nutrient leaching, cost and environmental impact on water ecosystems” – says Matjaž Glavan, assistant professor in environmental planning at the Biotechnical Faculty of the University of Ljubljana (BF UL) and OG coordinator.