A more thorough explanation:

Term: in solo proprio
Definition: In one's own ground.
Explanation: This term comes from Latin and means that something is happening on someone's own property or territory.
Examples:

• When the dog was barking in the yard, the owner knew it was in solo proprio.
• The farmer planted his crops in solo proprio.

Explanation of Examples: In the first example, the dog was barking on its owner's property, so it was in solo proprio. In the second example, the farmer planted his crops on his own land, so it was also in solo proprio.