The present invention provides a heterocyclic amide compound of Formula (1), and an agricultural chemical containing it, particularly a herbicide:in which Q is an aromatic heterocycle of any one of Q-1 to Q-5, W is an aromatic heterocycle of W-1, W-2, or W-3, X is an oxygen atom, etc., R1a is a hydrogen atom, a halogen atom, or C1-6 alkyl, etc., R1b is a hydrogen atom, R1c is C1-6 alkyl, R2a is a halogen atom, or C1-6 alkyl, etc., R2c is C1-6 haloalkyl, R3 is a hydrogen atom, etc., R4a, R4b, R4c and R4d are each independently a hydrogen atom, or C1-6 alkyl, etc., R5a, R5b and R5c are each independently a hydrogen atom, or C1-6 alkyl, etc., and n is an integer of 0, 1, 2 or 3.
