The lack of water reserves and the high cost of supplying water from non-conventional water sources have made increasing water efficiency one of the goals for most national plans. To enhance water productivity in the agricultural sector, the country's macro policy programs incorporate the development of modern irrigation systems. Appropriate management of irrigation, including the application of the right amount of water at the right time and place, stands as influential factors in increase productivity. In the development programs of modern irrigation systems, insufficient attention has been given to the cognitive investment in behavior, which is the management of the effective use of modern irrigation systems to increase productivity. One of the reasons for that was the absence of a tool or system to implement intelligent irrigation management. DSSPIM system is an intelligent irrigation management technology based on integrated processing of water, soil, plant, atmosphere and irrigation system information developed in the country. The purpose of this research is to eva‎luate the effectiveness of the DSSPIM system on the physical and economic productivity of water in potato cultivation under the solid-set irrigation system-with movable sprinkler in the plain scale. The project was implemented in 530 hectares of Hormozabad Semiram Production Cooperative in 2022. Some plots were selected for control and others for the implementation of intelligent irrigation management. All crop managements including tillage, seeds, fertilizers, weed, diseases and pests’ control were the same in the control and smart treatments, with the exception of the irrigation management, which were derived and implemented from the DSSPIM system in smart treatment. The amount of water consumption was measured by the pressure of the sprinkler nozzle and the irrigation duration. At the end of the season, the crop yield was sampled in eight points of three positions of the farm (a one-meter long of crop row). The results showed that the intelligent management of irrigation using the DSSPIM system led to a 55% increase in the physical productivity of water, 47% in production, and twice the farmer's profit per unit area, in comparison of control treatments. The total price of the product was also reduced by 30%. The average water usage for potato cultivation under the solid-set sprinkler irrigation system on the lands of Hormozabad Rural Production Cooperative Company is 7950 cubic meters per hectare and since intelligent management of irrigation increased water productivity by 55%, it is possible to save about 2820 cubic meters per hectare by maintaining consistent production. The amount of water saved across the entire 530-hectare area is equivalent to 1,495,112 cubic meters. From an economic point of view, the farmer's profit has doubled due to the vertical increase in production in field and constant current and variable costs. As a result of the increased farmer's profit, it is feasible to introduce policies aimed at reducing water extraction from resources without concerns about the farmer's livelihood and agricultural production.

مهدي قيصري , منوچهر حيدرپوراسفرجاني

علي يوسفي

محمد شايان نژاد , عليرضا علي پور