How to add multiple terms to a taxonomy via feeds and tamper I am importing nodes with taxonomy terms for one vocabulary. I have a set of terms that I would like to use that are set up with their own columns. 

I know feeds tamper can explode a set of data in one column using a delimiter and apply that to a term, but I need each taxonomy term to be in it's own column. This is easier for readability for the people who are setting up the database. 

How can I do this?

Thanks!
Feed Tamper gives you a feature to import multivalued field data using any separator like comma(,) using implode plug-in

If you have csv file like below



You need add implode plugin for that field in tamper tab in feeds form 



For a detailed tutorial refer this Awesome link!!!!