Evaluating Water-Use Efficiency of Drip vs. Furrow Irrigation in Onion (Allium cepa) Cultivation

Abstract

Efficient irrigation is critical for water-scarce regions. This study compared drip and furrow irrigation methods in onion fields in arid zones of North Africa. Parameters evaluated included crop evapotranspiration, yield, water productivity, and economic return.
Drip irrigation increased water-use efficiency by 47% and yield by 25% compared to furrow irrigation, while reducing irrigation water by 40%. Drip-irrigated onions also had better bulb size and quality. Although initial costs were higher, the net return on investment was more favorable for drip systems, supporting its adoption for sustainable water management.