Chhabilendra Roul was appointed as the Secretary for which of the following department?

Chhabilendra Roul has assumed the charge of Secretary, Department of Fertilizers, Ministry of Chemicals & Fertilizers from 31 December 2018. He replaced Bharathi S. Sihag, who retired on 31 December 2018. He was the Special Secretary of Department of Agricultural Research and Education. He is an Indian Administrative Services Officer of 1985 batch, from Punjab Cadre.