TDS on Rent U/s 194I

Whether TDS on rent  u/s 194I is applicable on asset wise or assessee wise?

e.g. if I made a lease agreement  from x & co.Ltd and in contract there was a clause for the rent that rent on plant & machinery is Rs. 10,000 P.M. and rent on land & building is 20000 P.M., then on which amount (either 30,000/- or 20,000/-) i have to deduct the TDS ?