University of Tehran Press Iranian Journal of Soil and Water Research 2008-479X 56 2 2025 04 21 The structural program of cultivation system of selected crops of Tajen Basin based on the sustainability of water resources The structural program of cultivation system of selected crops of Tajen Basin based on the sustainability of water resources 463 481 101780 10.22059/ijswr.2024.380371.669773 FA Hossein Fouladi Department of Agricultural Economics, Faculty of Agricultural Engineering, Sari Agricultural Sciences and Natural Resources University, Mazandaran, Iran. Hamid Amirnejad Department of Agricultural Economics, Faculty of Agricultural Engineering, Sari Agricultural Sciences and Natural Resources University, Mazandaran, Iran. Somayeh Shirzadi Laskookalayeh Asistant Professor of Agricultural Economics, Faculty of Agricultural Engineering, Sari Agricultural Sciences and Natural Resources University, Mazandaran, Iran. 0000-0002-9084-4965 Journal Article 2024 08 04 The main goal of the current research was to develop an optimal cultivation plan for crops in the Tajen catchment basin. For this purpose, two common deterministic mathematical programming models were used, including linear programming and goal programming and non-deterministic gray programming model,.In this regard, information on the time series of selected crops, water resources of the basin and the amount of water consumption in the agricultural sector during the years 2017-2021 from the annual reports of experts Agricultural Jihad Organization and Regional Water Company of Mazandaran Province were collected. The results indicate that the goal model is worse than the linear model in terms of profitability and better than this model in terms of the environment and it can be concluded that the goal model is the middle between the current and linear models. If the criterion for determining the optimal model is profitability and saving in the consumption of inputs that disrupt sustainability, the gray model with an average reduction of 23, 22 and 50%, respectively, in the use of water, chemical fertilizers and agricultural poisons) based on the range of savings in the consumption of the aforementioned inputs) is a more suitable model to recommend. Also, this model guarantees the possibility of earning 21,818 billion rials in gross profit only from the cultivation of barley, grain corn and rice. In addition, linear and goal models cannot provide a suitable program to farmers in the conditions of wet period/drought. Therefore, it is suggested to carry out promotional activities in order to raise awareness about the benefits of implementing the gray model on the water and soil of the region and the income of farmers. The main goal of the current research was to develop an optimal cultivation plan for crops in the Tajen catchment basin. For this purpose, two common deterministic mathematical programming models were used, including linear programming and goal programming and non-deterministic gray programming model,.In this regard, information on the time series of selected crops, water resources of the basin and the amount of water consumption in the agricultural sector during the years 2017-2021 from the annual reports of experts Agricultural Jihad Organization and Regional Water Company of Mazandaran Province were collected. The results indicate that the goal model is worse than the linear model in terms of profitability and better than this model in terms of the environment and it can be concluded that the goal model is the middle between the current and linear models. If the criterion for determining the optimal model is profitability and saving in the consumption of inputs that disrupt sustainability, the gray model with an average reduction of 23, 22 and 50%, respectively, in the use of water, chemical fertilizers and agricultural poisons) based on the range of savings in the consumption of the aforementioned inputs) is a more suitable model to recommend. Also, this model guarantees the possibility of earning 21,818 billion rials in gross profit only from the cultivation of barley, grain corn and rice. In addition, linear and goal models cannot provide a suitable program to farmers in the conditions of wet period/drought. Therefore, it is suggested to carry out promotional activities in order to raise awareness about the benefits of implementing the gray model on the water and soil of the region and the income of farmers. https://ijswr.ut.ac.ir/article_101780_dbd961d2e694cdd9dc7f72480e0b915d.pdf