Yes,it can be deducted as per new ITR 4S Form which applied to partnership also Learn more http://www.teachoo.com/3597/770/Section-44AD-and-44AE-for-Partnership-Business/Partnership-Business

Answer of this question

Agar koi partnership firm sec 44AD ka benefit leti h toh kya wo partner ke capital par interest ko usme se deduct kar sakti h?

Yes,it can be deducted as per new ITR 4S Form which applied to partnership also