What are implantable capsules?

What are implantable capsules?

• A. A plug containing the insecticide is tapped into a drill hole and set in place with a mallet.
• B. An injection method that uses the pressure to place small amounts of pesticide directly into the tree trunk.
• C. Consists of a harness of plastic tubing connecting to plastic trees.
• D. A handheld backpack sprayer for large trees.

Answer: (A)

Implantable capsules are a way to deliver insecticide directly inside the tree by placing a capsule into a drilled hole. The idea is to seat a plug that contains the pesticide into the hole so it releases inside the wood over time, giving long-lasting protection with minimal surface exposure. The described method—tapping a plug containing the insecticide into a drilled hole and setting it in place with a mallet—matches this internal, slow-release delivery. The other options describe external or different methods: injecting insecticide under pressure into the trunk is an injection method, not implanting capsules; using a harness of tubing to plastic trees isn’t how real trees are treated; and a handheld backpack sprayer applies pesticide to surfaces, not inside the tree.

Implantable capsules are a way to deliver insecticide directly inside the tree by placing a capsule into a drilled hole. The idea is to seat a plug that contains the pesticide into the hole so it releases inside the wood over time, giving long-lasting protection with minimal surface exposure. The described method—tapping a plug containing the insecticide into a drilled hole and setting it in place with a mallet—matches this internal, slow-release delivery.

The other options describe external or different methods: injecting insecticide under pressure into the trunk is an injection method, not implanting capsules; using a harness of tubing to plastic trees isn’t how real trees are treated; and a handheld backpack sprayer applies pesticide to surfaces, not inside the tree.