Sustainable Pest Management: The Rise of Food Sprays in Farms

Strategic Insights -

In the 1990s, entomologist Dr. Robert Mensah stumbled upon a revolutionary solution to the devastating bollworm problem in Australian cotton farms. By experimenting with food sprays, he attracted beneficial predatory insects and created a refuge crop that supported their populations year-round. This innovative approach sparked an international grassroots campaign, teaching people about sustainable farming methods through integrated pest management (IPM). Evergreen alfalfa flowers provided a haven for beneficial insects like ladybirds and lacewings, reducing the need for pesticides.

Key Takeaways:

  • Dr. Robert Mensah's food spray solution, a mixture of food ingredients, yeast, and sugar-based, attracted beneficial predatory insects and reduced pesticide use in Australian cotton farms.
  • The approach, part of integrated pest management (IPM), involves creating a refuge crop to support beneficial insect populations year-round, reducing the need for pesticides.
  • In 2005, Mensah took food sprays to Benin, where the Pesticide Action Network (PAN UK) was helping farmers transition to organic farming, with thousands now using the technique.
  • Food sprays have been successfully trialed in southern Ethiopia, Vietnam, and India, where Better Cotton has trained over 214,000 farmers to use the sprays.
  • The use of food sprays can be time-consuming and labor-intensive, requiring farmers to produce the formula and frequently spray and monitor its application.
  • Prof. Marcel Dicke notes that food sprays are not a silver bullet technology but can be helpful in nourishing beneficial insects, alongside a range of other management techniques.
  • Integrated pest management, which reintegrates a diversity of measures, suggests using selective chemical pesticides as the last resort when nothing else works.
  • Despite promising results, sustainable pest management is facing challenges in the UK due to a lack of economic driver and government support.

Statistics:

  • 214,000 farmers in India (across Maharashtra, Gujarat, and Telangana) have been trained by Better Cotton to use food sprays.
  • The Pesticide Action Network (PAN UK) has helped farmers transition to organic farming in Benin, where thousands are now using food sprays.
  • Dr. Robert Mensah first experimented with food sprays in the 1990s in Australian cotton farms.
  • Food sprays have been successfully trialed in southern Ethiopia, Vietnam, and India.

Sources:

  • Sources:

* Dr. Robert Mensah

* Dr. Samantha Cook, behavioral ecologist at Rothamsted Research

* Prof. Marcel Dicke, professor of entomology at Wageningen University

* Dr. Stephanie Williamson, former staff scientist at PAN UK

* Prof. Tariq Butt, member of the UK Expert Committee on Pesticides