The dbConnect parameter now takes an additonal optional parameter, 'application_name' which allows to pass the application name to the underlying database connection.
An R Interface to PostgreSQL.
Releases go to CRAN at https://CRAN.R-project.org/package=RPostgreSQL
Check status of the release in various platforms can be found at https://cran.r-project.org/web/checks/check_results_RPostgreSQL.html
Tests automatically run at Travis ci can be found https://travis-ci.org/tomoakin/RPostgreSQL