The Thirty-Year Beetle: What the Sal Borer Epidemic Reveals About Central India's Forest Economy

The Beetle That Keeps Coming Back: Sal, Pests and the Pattern of Central India's Forest Economy

The sal heartwood borer entered the forestry records in 1897, when colonial foresters were still organising central India's forests largely around one question: how much timber could they yield? Sal answered that question well.

Its strong, decay-resistant wood made it a prized material for construction and for railway sleepers. A pest that bored into mature sal was therefore, in the colonial ledger, a threat to revenue. More than a century later, the beetle is back in Dindori on a scale that requires felling 1.47 lakh trees.

The pattern has repeated: officials describe an epidemic cycle of roughly 30 years and the last great outbreak of 1997 to 2000 damaged about 8 lakh trees in neighbouring Mandla alone. What has changed is what is at stake.

The sal belt as a livelihood landscape Sal is the backbone of a forest belt that runs through Madhya Pradesh, Chhattisgarh, Odisha, Jharkhand and parts of Uttar Pradesh.

For the tribal communities who live within it, sal is less a timber species than a household economy.

• Seeds are pressed for cooking oil and sold to the soap and confectionery industries.
• Leaves are stitched into plates and bowls for local markets.
• Resin tapped from the trunk is burned as dhoop in worship.
• Groves themselves carry cultural and religious meaning. This is why the borer's choice of target matters. It concentrates on mature trees of 91 to 150 cm girth, with the worst losses at 121 to 150 cm. Those are the canopy trees that produce the most seed, leaf and resin and that form the habitat of tiger reserves such as Kanha and Pench. The epidemic strikes the part of the forest that the forest economy depends on most.

Where the

parallel breaks In one important respect, 2026 does not repeat 1897 or 1997. The forest department is now paying villagers to fight the pest. Selected trap trees are felled and stripped of bark and their sap draws adult beetles out.

Villagers return at dawn three days later to collect them by hand, at Rs 2 a beetle. More than 19.25 lakh beetles and Rs 38.5 lakh in payments later, tribal households have become frontline pest managers rather than bystanders to departmental decisions.

That is a real shift from the colonial model, in which forest communities were treated mainly as a source of labour or as a threat to the forest. Yet the paid collection campaign does not remove the deeper problem. When 1.47 lakh mature trees are felled and sent to the timber market, the seed, leaf and resin those trees would have yielded for decades leave with them.

A temporary income from beetles cannot replace a permanent income from trees.

For the exam, the insight is this: sal borer epidemics are recurring ecological events, but their real cost is measured in tribal livelihoods. A forest policy that tracks only timber losses has not moved far from the logic of 1897.