In the new approach to the supply chain, the emphasis is on securing the benefits of all the categories in the chain and providing ways to improve the performance of the chain in order to achieve the desired goal. Due to the production of people’s daily commodities and the low durability of some products, supply is important because supply and demand must be proportionate. This case study was conducted on tomato crop and selecting the model of contract of sale of agricultural products to wholesalers in order to maximize the whole supply chain profit. By reviewing the literature on supply chain contracts, 5 coordinated contract models were identified and tested through an empirical experiment on the supply chain wholesalers. The results of the experiment compared to the optimum value determined by the newsvendor model show that the order value received in each of the contracts did not reach the optimum value (280).

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