AI That Listens for Termites Could Save Tea Plantations

Tea plants have a silent enemy: the Upcountry Live Wood Termite. These insects eat tea trunks from the inside, and by the time farmers notice, the damage is already done. Now, researchers in Sri Lanka have combined simple hardware with artificial intelligence to catch these pests early.

The system works like a high-tech stethoscope. A microphone attached to a cheap computer called a Raspberry Pi listens to the sounds inside tea trunks. Healthy plants sound different from infested ones, and an AI model was trained to tell them apart. In field tests, the system was right about 81.5% of the time.

What makes this useful beyond the lab is that it not only detects termites but also maps severity. The AI predicts how bad the infestation likely is by combining sound levels, nearby infested plants, and geographic data. Farmers can see which parts of their plantation need immediate attention instead of spraying everything.

This is practical technology for a real problem. The devices are relatively affordable, and the audio data is analyzed automatically. It won't replace farmers, but it gives them a powerful early warning tool. Catching infestations sooner means less crop loss, targeted use of chemicals, and healthier tea plants — which helps everyone from plantation owners to tea drinkers.