PROBLEM TO BE SOLVED: To provide a method for weeding having high herbicidal effects without causing chemical injuries on Panicum virgatum, Miscanthus, Arundo donax, Phalaris arundinacea or Andropogen geardii.;SOLUTION: The method for weeding in places where Panicum virgatum, Miscanthus, Arundo donax, Phalaris arundinacea or Andropogen geardii is in growth is provided, being characterized by comprising: applying, onto the places, an effective amount of a protoporphyrinogen oxidase inhibitor as an active ingredient, wherein the inhibitor comprises at least one compound selected from the group consisting of flumioxazin, sulfentrazone, saflufenacil, oxyfluorfen, fomesafen and a compound represented by formula (I).;COPYRIGHT: (C)2013,JPO&INPIT
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