Termites and Mulch Work Together to Rehabilitate Soils
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Date
2008-01
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Abstract
In the semi-arid Sahel, soil degradation due to organic matter depletion, overgrazing, continuous cultivation, and adverse climatic conditions has led to the formation of severely degraded soils known locally as "zipella." Farmers in northern Burkina Faso employ various strategies to improve soil conditions, with mulch application being the most popular and appropriate technology. Our research investigates the role of termites in soil rehabilitation facilitated by mulch application. Trials conducted in two types of plots—one with mulch and no pesticides, and the other with mulch treated with pesticides to exclude termite activity—reveal significant differences in soil structure and vegetation establishment. Results indicate that termites play a crucial role in soil improvement, creating conditions conducive to vegetation growth. Mulch application triggers termite activity, enhancing soil structure, aggregation, water infiltration, and drainage. Conversely, plots treated with pesticides show poor vegetation establishment, highlighting the detrimental effects of eliminating soil fauna. Our findings underscore the importance of considering soil fauna, such as termites, in land rehabilitation efforts, advocating for sustainable practices like mulch application over mechanical methods like soil tillage, and cautioning against management practices that disrupt soil ecosystems.
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Ouédraogo, Elisée, Abdoulaye Mando and Lijbert Brussaard. 2008. “Termites and Mulch Work Together to Rehabilitate Soils,” LEISA Magazine, 24(2).