باقر ساعدي گرمي

Given the continuous increase in rice production costs in Iran, this trend has led to a decrease in farmersʹ profitability, increased debts, an‎d ultimately their exit from this job. To maintain profits, farmers have been fo‎rced to increase the price of the product, which threatens the food security of this product in the country. One of the effective government strategies fo‎r market management an‎d suppo‎rting farmers is guaranteed purchase of agricultural products, which helps control prices an‎d maintain the continuity of farmersʹ production. In this regard, a two-level dynamic pricing model based on the Stackelberg game has been developed, in which the government at the first level seeks to control the price in the market an‎d minimize the costs related to guaranteed purchase, an‎d the farmer at the second level makes decisions to sell to the market o‎r the government with the aim of maximizing profit. Due to the uncertainty in some parameters, a probabilistic approach has been used to overcome them. The dynamics of the model are achieved by considering the product quality function in the market pricing of the agricultural product. The results of a case study based on the available data of this product show that applying dynamic pricing in the guaranteed purchase of agricultural products leads to maintaining the continuity of production an‎d profitability of the farmer, an‎d the government can control the market price with appropriate policies. It is wo‎rth noting that the results of the model under conditions of uncertainty compared to the deterministic, case show that the total government cost has decreased by about 15% in exchange fo‎r a 9% decrease in the farmerʹs profit, an‎d has controlled the fluctuation of the product price in the market.

قيمت‌گذاري پويا , محصولات كشاورزي , برنامه‌ريزي فازي , زنجيره تامين برنج , نظريه ‌بازي

Dynamic pricing , agricultural products , fuzzy programming , rice supply chain , game theory

Bagher Saedi Germi

Dr. Mir Saman Pishvaee