Guyz in this tutorial im going to provide you on how to disable google+ comment box from blogger
1) Go to google+
2) Click on the account of yours
3) Then in the right side their will be option saying Use Google+ Comments on this blog
4) Then go to settings
5) Then click on posts and comments
6) Then click on how to show comments -- embedded, full page, pop-up window or hide it
7) Then adjust your comment box like who can comment,
Who can comment? Anyone - includes Anonymous Users
Registered User - includes OpenID
User with Google Accounts
Only members of this blog
Comment Moderation ?
Show word verification ?
Yes or No
Show Backlinks ?
Hide or Show
Comment Form Message
write what you want to show above the comment box like "We would like to have your precious comments in our post"
Now your google+ comment box has been disabled.