Analysis of Determinants of Productivity and Technical Efficiency among Smallholder Common Bean Farmers in Eastern Uganda

The efficiency of crop production has important implications for farm yield and productivity; however, little is known about the efficiency of bean production in Uganda. This study evaluated factors influencing technical efficiency among smallholder farmers in eastern Uganda where bean growing is common to over 80% of the population. Technical efficiency measured the ability of a farm to produce the maximum possible yield given the available production inputs and technology. To assess the technical efficiency, data was collected in 2010 on a sample of 280 farming households using a multistage sampling technique. A tobit model was used to analyze the data for determinants of technical efficiency. Results showed that technical efficiency was likely to decline by 2% when age of farmer increases by 1 year, possibly due to reluctance to take up new technologies. In addition, a one hectare increase in farm size is likely to increase technical efficiency by about 1.5%. A one dollar increase in asset values was likely to increase efficiency by about 2.4%. Similarly, having access to extension services was likely to increase efficiency by over 6%. Finally, being a member of a producer group was likely to increase the technical efficiency of members by over 14%. Based on these results, there is need for increased provision of extension service and training on proper crop management and improved farming technologies to increase bean productivity. On the other hand, there is need for a programme to effectively disseminate seed of new, improved, bean varieties to farmers all over the country to improve farm yields

Development and utilization of a decision support tool for the optimization of fertilizer application in smallholder farms in Uganda

This paper presents the development and pilot of the Fertilizer Optimization Tool (FOT), a decision support tool for use by extension agents in  advising smallholder farmers in Uganda in applying optimum (rather than maximum) fertilizer by considering the farmers’ financial abilities. The FOT is made up of three components which includes, the optimizer tool, the nutrient substitution table, and a fertilizer calibration tool. The FOT was developed using field trial data collected on specific agro-ecological zones and mapped using global positioning systems in 13 Sub-Saharan Africa countries. The FOT provides site- and farmer-specific fertilizer recommendations, providing both economic and environmental benefits. Results are based on a survey of 241 households, 57 technical personnel and tracking of 33 FOT users over a 3-season period. Results show a progressive shift in farmers’ attitude towards the value of fertilizer. More FOT users (71%) disagreed with the statement that fertilizers destroy soils, compared with  non-FOT users (52%). Crop yields (tons/ha) were significantly higher for crops receiving fertilizers compared to those not. While it is generally accepted that using fertilizer improves crop response and achieves better yields, the value of FOT was reported in terms of rationalization of investment by farmers. The average seasonal investment was approx. $43, giving a return on investment of over 107%. Given the evidence  generated from Uganda, there is a need for considering out scaling the FOT technology to other countries in Africa, which are faced with the same challenges of low fertilizer use among smallholder farmers. Using the mobile FOT app provides a further cost-effective opportunity to out scale the approach to benefit more smallholder farmers in sub-Saharan Africa. Further development of the FOT is suggested, particularly in the wake of increased focus on multi-nutrient fertilizer blends, and the need to adjust for soil PH, moisture, and long-term impacts of nutrient substitution. Key words: decision support tool, fertilizer optimization tool, precision agriculture, site-specific fertilizer recommendation

Bringing sustainable agricultural intensification practices and technologies to scale through campaign-based extension approaches: lessons from Africa Soil Health Consortium

Open Access Article; Published online: 19 Sep 2021Sustainable agricultural intensification (SAI) practices have been developed with the aim of increasing agricultural productivity. However, most of them are not achieving their potential because of low adoption, linked to limited extension support to make them known and accessible by end-users. This paper reviews the effectiveness of the Africa Soil Health Consortium (ASHC) extension-based campaigns, contributing knowledge for formulating novel and cost-effective extension approaches. Results show that ASHC campaigns achieved scale of farmer reach and spurred adoption of promoted SAI technologies. Adoption levels for a range of practices were at least 20%, which favourably compares with reported adoption rates for the training and visit extension approach; 1-7% and 11-21% for complex and simple practices respectively. In comparison to a single channel, exposure to multiple communication approaches was associated with higher uptake of promoted practices and technologies, and also increased participation of men, women and youth, by addressing inherent differences in access to, proficiency with, and preferences of communication channels. Success factors associated with ASHC campaigns were; the deployment of multiple and complementary information channels; harnessing public-private partnerships to establish sustainable input supply chains; and development of localized content and fit-for-purpose information materials to facilitate information diffusion