China’s green zombie fungus could hold key to fighting East Africa’s swarms of locusts
- An insect-killing fungus has been turned into a mass-produced biopesticide that will face its biggest challenge in East Africa
- Current swarm has put 13m people at risk of famine and this will be the first large-scale test of its effectiveness
Chinese factories are producing thousands of tonnes of a “green zombie fungus” to help fight the swarms of locusts in East Africa.
Metarhizium is a genus of fungi with nearly 50 species – some genetically modified – that is used as a biological insecticide because its roots drill through the insects’ hard exoskeleton and gradually poisons them.
In China it was named lu jiang jun, which means green zombie fungus, because it gradually turns its victims in a green mossy lump.
There are now dozens of factories across the country dedicated to producing its spores and despite the curbs introduced to stop the spread of Covid-19, many of them have resumed operations and are shipping thousands of tonnes to Africa.
These factories are set up in a similar way to breweries, growing the spores on rice which is kept in carefully controlled conditions to ensure the correct temperature and humidity.
Each plant can produce thousands of tonnes of fungi powder per year, each gram of which contains tens of billions of spores.