New method for reducing evaporation losses in dams, large stagnant water, and agricultural water management

Abstract This study evaaluates two research methods to mitigate water evaporation in arid regions with high temperatures and sparse rainfall. The first method assesses evaporation control using locally available date palm yarn (SEES) as a floating cover for water bodies. The second method investigates the effect of SEES laid under ploughed ground to enhance soil moisture retention. Evaporation from water surfaces was measured using two identical evaporation pan—one covered with date palm yarn and the other left open—over two months. Results indicate a 7.5% reduction in evaporation for the covered pool compared to the open one. The floating SEES cover provided shade, reduced direct solar exposure, and conserved more water for irrigation. Additionally, SEES placed under ploughed soil retained moisture, increasing soil water content and plant root absorption. Chemical analysis revealed that SEES contains beneficial compounds that enhance soil wettability and nutrient retention. This method provides a low-cost, sustainable, and eco-friendly solution for reducing water loss in agriculture and water reservoirs.