TUNJA, Colombia (AP) — Three yellow-and-black beetles clung to the shirt of Germán Viasus Tibamoso, a Colombian environmental engineer who uses beetle larvae to transform food waste into fertilizers.
As he encouraged them to move along, he murmured to them in Japanese — trying to get them accustomed, he said, to the sounds of their future homes.
The not-so-little bugs — which can grow up to 17 centimeters long — have a remarkably productive and complicated life among the humans who breed and collect them. Viasus operates a company called Tierra Viva in a rural area around the city of Tunja, a city some 150 kilometers northwest of the Colombian capital of Bogota.
An attempt as a postgraduate student to produce organic fertilizer with worms failed, Viasus said, but he found beetle larvae in the bags of earth that remained. He tried using them instead. And it worked.Tons of food scraps collected from nearby communities are spread in concrete ditches and covered with earth. Then beetle larvae — the stage between egg and adulthood — are introduced.
They chew through the refuse and their digestive microorganisms transform it into a fertilizer rich in nitrogen and phosphorous.
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