In rural northern Senegal, a surprising anti-poverty strategy is taking root: cutting down invasive aquatic weeds. These plants, often seen as nothing more than a nuisance, are now at the center of a low-cost, community-led solution to two pressing issues: disease and declining farm productivity. Local villages are improving public health and raising agricultural incomes by removing vegetation that hosts disease-carrying snails and turning it into compost.

Schistosomiasis: A Barrier to Health and Economic Growth

This initiative targets schistosomiasis, a parasitic infection spread by snails that inhabit stagnant water. The disease affects more than 200 million people globally, mostly in sub-Saharan Africa. Infected individuals, especially children, suffer from fatigue, stunted growth and organ damage, which limit both education and income-generating potential. Senegal’s Saint-Louis region has long been a hotspot for the disease.

However, rather than relying solely on drug treatments, researchers from Cornell University and the University of Notre Dame partnered with eight Senegalese villages to try a local intervention: vegetation removal. Over three years, communities cleared more than 400 tons of invasive aquatic weeds from rivers, lakes and irrigation points. Within months, snail populations dropped by and schistosomiasis infections among children declined significantly.

Composting Waste Into Agricultural Wealth

The removed invasive weeds were composted and used to fertilize local crops such as onions, peppers and rice. Farmers who used the compost reported better soil quality, larger harvests and reduced need for synthetic fertilizers. As Molly Doruska, lead author of the study, explained, “This is about really thinking hard about the microeconomics in the cycle of poverty and disease, really thinking hard about households making decisions and the tradeoffs that they’re facing.”

Researchers developed a bioeconomic model to estimate the long-term impact of the intervention. The results were promising: communities that participated in vegetation removal and composting saw improved household incomes and lower rates of schistosomiasis. The low cost of implementation, using only machetes, baskets and compost pits, makes it both scalable and sustainable.

Environmental and Gender Benefits

The strategy yields environmental wins as well. Clearing invasive water weeds in Senegal helps restore freshwater ecosystems, reduces erosion and improves access to water. The composted material replaces chemical fertilizers, cutting input costs and supporting soil health. The approach also has significant gender implications. In many rural households, women are primarily responsible for water collection and caregiving. With fewer children getting sick, women could have more time for farming, education or income-generating activities.

Beyond physical health, the intervention contributes to long-term social development. Reduced infection rates mean more children can attend school regularly without suffering from the fatigue or pain associated with schistosomiasis. In addition, the project has sparked environmental awareness. In participating communities, residents now better understand the link between environmental care and health outcomes and many have begun to self-organize cleanup efforts.

Scalability Across the Continent

Experts believe this “win-win-win” model could be replicated across other parts of sub-Saharan Africa where schistosomiasis and aquatic vegetation are prevalent. Since the required tools are simple and the work is labor-based, it can be easily adapted to local conditions. It also aligns with several Sustainable Development Goals (SDGs), including No Poverty, Good Health and Well-being, Gender Equality and Life on Land.

Clearing invasive water weeds in Senegal has proven that locally driven, low-cost interventions can have wide-reaching benefits. By removing harmful plants and turning them into a resource, communities reduce disease and invest in their economic futures. In the global fight against poverty, sometimes the most effective tools are machetes, compost piles and a little teamwork.

– Mamie Hirsh

Mamie is based in Berkeley, CA, USA and focuses on Good News and Celebs for The Borgen Project.

Photo: Flickr