The aim of this study is to identify the attributes of storage structures sought by maize producers based on a choice experiment. The experimental processes took place in the maize production areas of northern and central Benin. The sample consisted of 365 maize farmers (80.55% male and 19.45% female) randomly selected from 40 villages. Data were collected and analyzed using a latent class logit model to study the heterogeneous preferences of the key attributes of storage structures. The results show that men and women are eager to change their current practices and to adopt new storage technologies. The study identifies four potential producer segments, including three large-farmer segments that have access to credit and are particularly attracted to structures related to metal silos. Of those three segments, two are also attracted to improved traditional silos. Another segment of poor farmers, who do not have access to credit, prefer to have a very efficient structure (loss rate of less than 5%) that is designed with local materials. This study suggests that knowledge of the heterogeneity of preferences, as well as the preferred attributes, is important for the development and dissemination of better technologies by agribusiness firms, institutions and policymakers.

The loss rates and financial profitability of maize storage and conservation technologies were assessed in the central and northern regions of the Republic of Benin. The experimentations were conducted specifically in the villages of Boukoumbé and Savalou and were randomly sampled. A total of four storage technologies were offered to 137 producers: the polypropylene bag, the Purdue Improved Cowpea Storage (PICS) bag, the metal silo, and the improved and closed earthen attic (with or without stock processing). The method by Pantenius was used to determine the loss rates, and the economic method of Gittinger was used to evaluate the profitability of technologies. The results showed that the technologies that recorded fewer losses in the two communes during storage were the PICS bag with grain treatment by chemical conservation measures in Savalou (9.42 ± 4.64%) and Boukoumbé (2.69 ± 0.77%), the PICS bag without grain treatment in Savalou (11.71 ± 2.78%), the metal silo with grain treatment in Boukoumbé (4.92 ± 1.36%) and the polypropylene bag with grain treatment in Savalou (10.56 ± 2.80%) and Boukoumbé (4.02 ± 1.23%). Therefore, the financial analysis results indicated that the most profitable storage technologies were the PICS bag with treatment in the center of Benin and the polypropylene bag without treatment in northern Benin.