Despite the enormous importance of maize in Ghana, maize farmers in the country continue to experience low yields, making Ghana self-insufficient in the production of the crop. For maize farmers to be helped to increase productivity, the focus should not only be on whether or not they have adopted productivity-enhancing technologies, but it is necessary to carefully examine whether they are even making maximum use of the technologies or inputs available to them. This study analysed resource use efficiency for Ghana’s maize farms. The data used were obtained through a cross-sectional survey of 576 maize farmers in the Northern Savannah, Transitional, Forest and Coastal Savannah zones of Ghana using structured questionnaire. Descriptive statistics, stochastic frontier analysis and the ratio of marginal value product to marginal factor cost were the methods of analysis employed. The results showed that generally, maize farmers in Ghana were inefficient in their use of resources available to them. Fertilizer, herbicide, pesticide, seed, manure and land were underutilized, while labour and capital were overutilized by the farmers. The results further showed that maize farmers in Ghana exhibit increasing returns to scale, indicating that the famers can increase their output by increasing the use of some of the key resources. Incentives and strategies aimed at encouraging farmers to optimize the use of fertilizer, herbicide, pesticide, seed, manure and land are recommended to ensure improved maize productivity in Ghana. Currently, incentives and strategies could take the form of better management by government of the current fertilizer subsidy programme and efficient input distribution through farmer-based organizations to ensure easy access by farmers.

The paper assesses the potential impact of the adoption of improved cassava varieties on yields of smallholder farmers. Agricultural intensification is associated with increasing yields per hectare through the use of improved varieties. Studies have established the relationship between adoption and yield, yet this relationship is understudied in the cross-national literature. Using cross-sectional data collected from a randomly selected sample of 1,176 farmers dispersed across Ghana and employing an endogenous switching regression model, the causal impact of improved variety adoption was estimated. Our results revealed that adoption decisions were conditioned by age, extension access, extension visits, awareness and farm size. Also, adoption had a significant positive impact on cassava yields. Adopters had 18 t/ha increases in yields and non-adopters should they have adopted had increases of 10 t/ha. Strategies to resource research extension linkage system to promote and create awareness about the existing improved cassava varieties for increased adoption are recommended.

Whether or not maize farmers are technically efficient determines their choice of productivity improvement strategy and very important for achieving the sustainable development goals on no poverty and zero hunger. This study examined technical efficiency and its determinants of Ghana’s maize farmers. Analysis of the determinants is crucial to devising strategies aimed at improving technical efficiencies of the farmers as well as ensuring no poverty and zero hunger. The study used cross-sectional data collected from 576 maize farmers in the four main agro-ecological zones of Ghana with the aid of structured questionnaire. Descriptive statistics and the stochastic frontier production function were the methods of analysis used. The results showed that the mean technical efficiency estimate for maize farmers in Ghana was 58.1%. They also revealed that an increase in educational level, maize farming experience, extension contact as well as uses of fertilizer and improved seeds would increase the technical efficiency of maize producers in Ghana. Similarly, male Ghanaian maize farmers were more technically efficient than female farmers. Furthermore, membership of a farmer association will increase their technical efficiencies. Finally, an increase in farm size and land fragmentation will decrease technical efficiency of the maize farmers. Efficiency improvement programmes by stakeholders in the maize industry could target literate maize farmers since education enhances the managerial and technical skills of farmers and also increase farmers’ ability to utilize existing technologies. Ministry of Food and Agriculture (MOFA) could also liaise with Ministry of Education to provide maize farmers with no formal education with special training prior to introducing new efficiency enhancing programmes to them. MOFA should analyse the problems extension officers face in the discharge of their duties to pave the way for the provision of appropriate incentives to extension officers by stakeholders in the maize industry.