What other methods are being trialled to control cicadas?

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Other cicada control methods being trialled include wrapping trees and placing mats at tree bases.

The task force is trialling two additional measures beyond light traps. More than 500 trees have been wrapped with aluminium foil or plastic to stop nymphs from climbing up the trunk to moult, while tarpaulin or mats have been placed at tree bases to reduce the number of insects emerging from the ground.
Tree wrapping is being used to block nymphs from climbing.

More than 500 trees were covered with aluminium foil or plastic. The aim is to prevent nymphs from reaching the trunks and moulting there.
Tarpaulin and mats are being placed at the base of trees.

These materials are laid around tree bases to cut down the number of insects coming up from the soil. The measure targets cicadas that emerge from the ground rather than those already in trees.
Authorities are also looking at future targeted measures.

Preliminary observations suggest hotspots may be linked to specific tree species, tree age, landscape features and micro-habitat conditions. Continued monitoring will also help assess targeted pruning during egg-laying periods and the selective use of new pesticides in severely affected areas.
Any pesticide use would be tightly evaluated.

Authorities said any pesticide use would need careful evaluation. The concern is to avoid harming other insects or residents who come into contact with treated trees.

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What other methods are being trialled to control cicadas?

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