Research pick: Not a waste! - "Knowledge, attitude and practices relevant to food loss reduction along the bean supply chain of the home-grown school meal program in Kajiado and Kitui counties, Kenya"

Research in the International Journal of Postharvest Technology and Innovation has demonstrated that the knowledge, attitudes, and practices of farmers and traders play a central role in determining how much food is lost after harvest in Kenya’s bean supply chains. The insights from the research could have an important effect on food security initiatives across Sub-Saharan Africa.

The research, conducted in Kajiado and Kitui counties in Kenya, examined the supply chains serving the country’s Home-Grown School Meals Programme (HGSMP), which provides essential nutrition to schoolchildren using locally sourced food. The focus was on common beans, a crop grown by more than three million small-scale farmers in Kenya and a vital source of protein and nutrients in the region.

While food loss in Sub-Saharan Africa is often discussed in terms of inadequate infrastructure or the impact of pests and diseases, this study turns its attention to human behaviour and specifically knowledge, attitudes, and practices. These include basic yet essential actions such as drying beans properly prior to storage, turning grains during drying, and covering them at night to protect from moisture. Each of these practices can make a measurable difference in preserving food quality and quantity.

The study found that farmers who knew and applied good post-harvest practices saw losses reduced by up to 15%. For traders, proper drying techniques led to nearly 30% less spoilage. Even attitudes, such as the willingness to adopt such drying practices, had a significant effect. The evidence suggests that behavioural change, informed by targeted education and training, could have as much impact as technical interventions such as improved storage facilities.

This shift in focus has implications across Sub-Saharan Africa. As governments and development agencies invest in reducing food loss to address hunger and improve food security, this research shows that equal weight must be given to human behaviour as to infrastructure or technology. In contexts where resources are limited, improving what people know and do may offer a more scalable and cost-effective solution than simply ploughing in more money where it is available.

Okumu, C.A., Mburu, J., Mujuka, E., Ambuko, J. and Klug, I.L.F. (2025) ‘Knowledge, attitude and practices relevant to food loss reduction along the bean supply chain of the home-grown school meal program in Kajiado and Kitui counties, Kenya’, Int. J. Postharvest Technology and Innovation, Vol. 10, No. 6, pp.1–24.