Providing a novel control agent for soft rot and a novel control method for the same.A compound having no antibacterial activity against Erwinia carotovora but having a control activity against fungi on soil surface, specifically containing, as the active ingredient, a fungicide comprising any of a strobilurin compound such as azoxystrobin and kresoxim-methyl, an azole compound such as triflumizol, cyazofamid, amisulbrom, and thiophanate-methyl, a carboxamide compound such as penthiopyrad and boscalid, a sulfonamide compound such as flusulfamide, an organic chlorine compound such as chlorothalonil, a dicarboximide compound such as procymidone and iprodione, a phenylpyrrole compound such as fludioxonil, an anilinopyrimidine compound such as mepanipyrim, and a guanidine compound such as iminoctadine is the control agent for plant soft rot, which is applied to plant cultivation soil.本發明提供一種新穎的軟腐病的防除劑及其防除方法。其係對於軟腐歐文氏菌(Erwinia carotovora)細菌無抗菌活性，但對於土壤表面的真菌具有防除活性的化合物，具體而言，將包含亞托敏(azoxystrobin)、克收欣(kresoxim methyl)等甲氧基丙烯酸酯(strobilurin)系化合物、賽福座(triflumizole)、賽座滅(cyazofamid)、安美速(amisulbrom)、甲基多保淨(thiophanate methyl)等唑系化合物、吡噻菌胺(penthiopyrad)、白克列(boscalid)等羧醯胺系化合物、氟硫滅(flusulfamid)等磺醯胺系化合物、四氯異苯腈(chlorothalonil)等有機氯系化合物、撲滅寧(procymidone)、依普同(iprodione)等二羧基醯亞胺系化合物、護汰寧(fludioxonil)等苯基吡咯系化合物、滅派林(mepanipyrim)等苯胺基嘧啶系化合物，及克熱淨烷基苯磺酸酯等胍系化合物中任一者的殺菌劑做為有效成分，以作為植物的軟腐病的防除劑，並將其施用於植物的栽培土壤。
