2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/155640We give a reduction of the irregular case for the effective non-vanishing conjecture by virtue of the Fourier-Mukai transform. As a consequence, we reprove that the effective non-vanishing conjecture holds on algebraic surfaces.3 pages; v2: a remark is added; v3: final versionAlgebraic Geometry14E30text