Water scarcity represents a significant challenge to citrus production in Morocco, a situation worsened by climate change. To secure the long-term sustainability and productivity of this essential agricultural sector, it is vital to implement innovative and integrated water management strategies. This study focuses on a six-year-old citrus orchard situated in a Mediterranean climate zone (Kenitra, Morocco). The orchard was equipped with LoRaWAN-enabled soil moisture sensors (TerraPrima Ladybird) and covered with geotextile black plastic mulch. The sensors, placed at depths of 20, 40, and 60 cm within the root zone, continuously monitored volumetric water content under a drip irrigation system. The data was incorporated into a daily water balance model to optimize irrigation scheduling. Concurrently, the use of plastic mulch decreased surface evaporation while improving soil moisture retention. The integrated strategy of using sensor-based irrigation management alongside soil mulching increased soil moisture levels by up to 30%, translating into an additional storage capacity of 20 to 180 m³/ha of water within the root zone. As a result, the mulch effectively reduced evaporation rates, allowing longer intervals between irrigation cycles as determined by the soil moisture sensors. This strategy not only minimized water and energy consumption but also significantly boosted fruit yields by up to 57%, along with notable improvements in fruit size and overall orchard health and efficiency. This later increased by 25%. The integration of soil moisture sensors, plastic mulch, and a Water-Energy-Food-Ecosystem nexus approach represents a promising strategy for enhancing water efficiency and overall sustainability of citrus orchards. This comprehensive approach addressed the pressing challenge of water scarcity while also promoting the long-term environmental and economic viability of the citrus industry amid evolving climate and trade dynamics.