Make your dog's time in the yard fun and not destructive.
Often when you leave a dog in the yard they feel abandoned, something that you may feel is a treat seems like a punishment to the dog.
Abandonment outside will encourage inappropriate behaviour.
Bad behaviours like digging or barking will develop out of boredom.
You must solidify a fun environment and show the dog you are not abandoning him outside when you want to get rid of him.
Establish boundaries around the yard so he knows not to go in them.
An example would be the rose bushes walk with him and show him it isn't acceptable behaviour.
Bring toys out into the yard play with them but show him how to play with them himself.
If you are really having problems getting your dog to stop barking and digging I suggest you seek help it sounds like you have not established yourself as the leader and the dog doesn't respect you.
Positive firm reinforcement will make you both happier.
Having a well trained dog is a wonderful experience let's explore two dogs that live for 20 years 1 owner doesn't train his dog properly so the dog is constantly being yelled at and receives little to no praise for being a good dog.
The second dog however has had a wonderful life he respects and loves to make his owner happy he knows his boundaries he receives daily praise and lives a life of happy servitude the whole family remembers him as a happy part of their life most likely they feel a great loss when the dog is gone.
The other dog is missed for a few days but the quiet house and the annoyances have stopped and so do the memories.