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Improving food safety on the farm: Experimental evidence from Kenya on agricultural incentives and subsidies as public health investments
Evidence continues to mount that foodborne illness imposes a staggering health burden in developing countries. However, standard approaches used by developed country governments to ensure food safety are not appropriate in settings where regulatory enforcement capacity is weak and most firms are small and informal. Thus, interventions to improve food safety in developing countries must take into account the constraints and incentives faced by producers in these countries. In this paper, we test the impact of two such interventions: subsidies for technologies that improve food safety and price premiums for safer produce. We examine the case of on-farm control of aflatoxin, a carcinogenic toxi...
Observability of food safety losses in maize: Evidence from Kenya
Unlike physical losses, deterioration of food safety can be difficult to observe. In low- and middle- income countries, much of the food supply is never tested for safety hazards. We analyze data from 1500 maize samples and associated consumer surveys collected from clients of small-scale hammer mills in rural Kenya. We find that while visible damage to maize is penalized by lower prices, there is no correlation between price and aflatoxin, a carcinogenic fungal contaminant, implying an absence of market incentives to manage this aspect of food loss. Aflatoxin contamination is, however, correlated with consumer perceptions of quality, especially for self-produced maize, suggesting an information asymmetry that could lead to inefficiencies in this market.
Self-selection versus population-based sampling for evaluation of an agronomy training program in Uganda
A challenge to evaluating the impact of agronomy training programs, particularly on downstream impacts such as yield, is the identification of a sample with sufficiently high take-up propensity. We assess the effectiveness of screening farmers for their interest in a coffee agronomy training program based on participation in a pre-training activity designed for this purpose. The screening activity was designed to appeal to the same farmers targeted by the agronomy program, while having minimal impact on that program’s goal of increasing coffee yields. A three-session training on farm business management was conducted in 22 study villages in central Uganda. Coffee agronomy training was then offered in half of these villages, based on random assignment. 52 percent of coffee farmers self-selected through their attendance of business training subsequently attended agronomy training, compared to 22 percent of those identified through a census. Applying these results to the design of a large ongoing RCT, we find that use of a self-selected sample reduces the minimum detectable effect of agronomy training on coffee yield to 15.83%, compared to 38% if population-based sampling were used.
Rice fortification in Bangladesh: Technical feasibility and regulatory requirement for introducing rice fortification in public modern storage/distribution of fortified rice through PFDS channels
Micronutrients, often referred to as vitamins and minerals are vital to healthy development, disease prevention, and wellbeing. Although only required in small amounts, micronutrients are not produced in the body and must be derived from the diet. Commonly cited micronutrients include Iron, Vitamins A, B, D, Iodine, and Zinc. Malnutrition in micronutrients tends to trap populations in a vicious cycle of poverty, causing adults to be less productive and preventing children from reaching their full potential, and exacerbating household poverty in general. Addressing the problem of micronutrient malnutrition, therefore, provides substantial benefits to the cause of development (Ara et al. 2019). The fortification of staple food items including rice to deliver vital micronutrients offers a unique opportunity to target the vulnerable populace – mostly women, young children and female adolescents – at a low cost, and importantly, without forcing a change in dietary habits.2 Although considerable investments are currently being made to improve micronutrient nutrition outcomes around the world, such efforts generally take time to provide results.
Uganda coffee agronomy training: Impact evaluation report
This report describes the methods and findings of a randomized controlled trial evaluating the impact of coffee agronomy training and phone-based advisory services on farmer practices and observed coffee yield. In-person training was provided in randomly selected villages over the course of two years by Hanns R. Neuman Stiftung (HRNS) and TechnoServe in two separate regions of Western Uganda encompassing six districts. Messages reinforcing this training were sent to a subset of farmers in villages where training was offered by Precision Development (PxD), and standalone messages were sent to a subset of farmers in villages where no training was offered. The program period spanned the onset of the COVID-19 pandemic and associated lockdowns, which significantly affected how training could be delivered and likely reduced its impact.
Demand for aflatoxin-safe maize in Kenya: Dynamic response to price and advertising
This paper characterizes consumer demand for food safety and the dynamic impact of a social marketing campaign to promote a tested, third party verified maize flour in Kenya, where dietary exposure to the fungal toxin aflatoxin is a major public health concern. Consumption of high levels of aflatoxin can be fatal, but this is relatively rare. Of greater concern is chronic exposure, which has been linked in numerous studies to liver cancer and may also contribute to child stunting. A significant proportion of the maize consumed in Kenya, where it is the primary dietary staple, fails to meet regulatory standards. One study reported widely in the Kenyan press found that 65% of maize samples collected from 20 major millers did not meet the national standard (Gathura, 2011) and another based on over 900 samples collected from retailers found that 26% of branded maize flour was above this standard (Hoffmann and Moser, 2017).
Poultry production in Burkina Faso: Potential for poverty reduction and women’s empowerment
Poultry rearing is widespread in rural Burkina Faso, and contributes to both the food security and cash income of smallholders farmers. The landlocked status of the country, coupled with increasing demand for poultry in urban areas implies an opportunity for significant, pro-poor growth through this sector. We use data from a survey of 1800 poultry producers to characterize smallholder poultry producers and their practices. We find that 88% of households in program areas raised poultry. While access to vaccination services and veterinary medicines at the village level is high, uptake of these services is limited, especially among smaller producers. Fewer women than men own poultry, but most women report that they control the proceeds from sales of their own birds, indicating the potential for development of the poultry sector to generate relatively equitable gains in terms of gender. Access to credit appears to increase women’s poultry ownership, but remains limited, as does women’s access to poultry output markets.
Enumerator bias in yield measurement: A comparison of harvest versus allometric measurement of coffee yields
Measuring yield accurately is critical for evaluating the impact of interventions that aim to increase agricultural productivity but presents challenges in the case of coffee due to the long harvest period. An allometric approach, in which the fruits on randomly selected branches and clusters are counted is widely used due to its non-destructive nature and acceptability to farmers. However, this approach requires careful attention to detail, which may be difficult to maintain in the context of large-scale data collection efforts. Using data from 199 small-scale Robusta coffee farms in Uganda, we compare yield estimates obtained through a standard allometric protocol against those from a one-...
Post-harvest losses and food safety in tomatoes produced in Laikipia County
Kenya is one of the main producers of tomato within Africa south of the Sahara, with an estimated market value of USD 237 million as of 2012, most of which was produced for the national market (Sibomana et al., 2016). Within Laikipia, the total value of tomato production was estimated as 148.5 million KSh in 2014 (Ministry of Agriculture). Due to their softness and perishability, tomatoes have significant potential for both quality and quantity losses postharvest.
Post-harvest losses in fruits and vegetables: The Kenyan context
This report collates and contextualizes available evidence on post-harvest losses (PHL) in horticultural crops in Kenya. We begin by outlining the extent of PHL in horticultural crops and its repercussions in the context of food security and poverty reduction. We then describe the growing importance of the horticulture sector in Kenya and its growth potential, especially in terms of exports. Following this discussion, we detail PHL for two important horticultural crops, mangoes and tomatoes, for which Kenya-specific evidence is available. We discuss ways to mitigate PHL from three angles: technological, economic or behavioral, and institutional. Documenting cost-effective technological interventions to mitigate PHL, we catalogue ways to tackle PHL at the individual farmer level. We then highlight behavioral bottlenecks to adoption of such technologies and the need to design interventions in ways that address these. Finally, we discuss structural and institutional changes that would need to accompany individual-level interventions to bring about significant reductions in PHL.
