26
Sep
Africa’s Resilient Refusal of Agrochemicals Offers a Lesson in Tackling Invasive Species
(Beyond Pesticides, September 26, 2023) In Ethiopia’s Bahir Dar, where Lake Tana feeds into the Blue Nile, a major hydroelectric power plant stands, serving as an emblem of the ecosystem services the river provides to over two million inhabitants. Yet ever since its first appearance in 2012, this crucial waterway has been under attack by one of the world’s most invasive species: the water hyacinth.  In America and Europe, where agrochemical giants such as Bayer and Syngenta are headquartered, such problems might quickly be remedied using herbicides. However, the prevailing ethos coming from the African continent is quite different. Dion Mostert, whose South African boat business has suffered due to the water hyacinths infestation, encapsulates this sentiment, saying he has considered herbicides but sees them as a temporary fix to a much larger challenge. Instead of relying on temporary—and often harmful—agrochemical solutions, Ethiopia and other African countries are embracing holistic and sustainable solutions.  For instance, Lake Victoria–a water body shared by Kenya, Tanzania, and Uganda—suffered from a water hyacinth infestation in the 1990s. In response, scientists introduced two species of weevils known to be natural predators of the hyacinth: Neochetina bruchi and Neochetina eichhorniae. The initiative was extremely successful, […]
