Given the new challenges confronting agricultural sector, innovative (alternative) production policies need to be devise and design at the farm level. Due to its involved high cost, re-configuring experiments are not easy and circumspect to conduct at this level, a beforehand modelling is required for a scrupulous evaluation of multiple impacts of any eventual alternative re-conguration. In this sense, focused on crop production supply chain encountered at a typical French agricultural cooperative, this study investigates an alternative storage policy based-on the pooling of growers and cooperative resources and efforts during the harvest season. By raising awarenesses on deterministic and stochastic components, a discrete event simulation modellings of the both current and alternative crop supply chain are presented and confronted for an efficient crop streaming from growing fields to long-term storage facilities.