South African scientist’s breakthrough research shows soil fungus could be used in fight against devastating crop pestHearing about fields full of dead caterpillars enveloped in a mysterious white substance intrigued the South African scientist Letodi Luki Mathulwe. Something was killing off the African armyworm – one of the most devastating pests for farmers in east and southern Africa.The white substance was a naturally occurring fungus and it was wiping out the caterpillar, which gained its name from its march-like advance through fields of crops.
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