PROBLEM TO BE SOLVED: To provide a mat chemical applicator which can apply a chemical to seedling mats on a seedling tray and can simultaneously apply an insecticide-fungicide combination or a herbicide, namely can plant seedlings and can simultaneously apply a fertilizer or the like, and a herbicide or the like.SOLUTION: This mat chemical applicator 10 comprising a chemical hopper 41 for storing a chemical and an application portion 43 for applying the chemical of the chemical hopper 41 to seedling mats on a seedling tray 16 is characterized by having a herbicide applicator 90 for storing and applying a herbicide or the like. The herbicide applicator 90 is detachably attached to the rear lower portion 55 of a support frame 53 for supporting the chemical hopper 41 and an application portion 43.COPYRIGHT: (C)2008,JPO&INPIT【課題】苗載台上の苗マット上に薬剤を散布しつつ、殺虫殺菌剤や除草剤を散布することができる、つまり田植と同時に肥料等の散布と除草剤等の散布を行うことができるマット施薬機を提供する。【解決手段】薬剤が貯溜される薬剤ホッパ41と、該薬剤ホッパ41の薬剤を苗載台16上の苗マットに散布する散布部43と、を具備するマット施薬機10に、除草剤等を貯溜して散布する除草剤散布機90を備えた除草剤等を貯溜して散布する除草剤散布機90を備え、前記除草剤散布機90を、前記薬剤ホッパ41及び散布部43を支持する支持フレーム53の後下部55に着脱自在に装着した。【選択図】図2