How to nest folders in Finder based on columns in a spreadsheet?
Export the Excel as a CSV (assuming there are only the two columns you've shown above, otherwise delete other stuff first), with the separator set to ,
Open Terminal
Run 

while IFS=, read FEEDER SERIAL; do
    mv "/path/to/$SERIAL" "/path/to/$FEEDER/"
done &lt; "/path/to/CSV"


(Replace the /path/to parts as needed)


PS: This assumes that the serial numbers are unique.