PROBLEM TO BE SOLVED: To provide a technique which is effective against bacterial diseases of gramineous plants occurring in a seedling period, and which is related to a microbial pesticide entailing a low environmental load.SOLUTION: A problem is solved by using: a bacterial disease control agent for gramineous plants including a culture solution, a microbial cell suspension, or a supernatant liquid of a Herbaspirillum sp. 022S4-11 strain (accession number FERM P-22001) a bacterial disease control method for gramineous plants having a control processing step to make the bacterial disease control agent adhere to seeds of the gramineous plants and further seeds formed by coating the seeds of the gramineous plants with the bacterial disease control agent for gramineous plants including the Herbaspirillum sp. 022S4-11 strain (accession number FERM P-22001), or debris thereof, or the culture solution, the supernatant liquid, or the microbial cell suspension of the Herbaspirillum sp. 022S4-11 strain (accession number FERM P-22001) and effective at bacterial disease controlling for the gramineous plants.COPYRIGHT: (C)2015,JPO&INPIT【課題】イネ科植物の育苗期に発生する細菌性病害に有効であり、かつ、環境負荷の少ない微生物農薬に関する技術を提供する。【解決手段】ハーバスピリラム・エスピー(Herbaspirillum sp.)022S4-11株(受託番号FERM P-22001)の培養液、菌体懸濁液又は上清液を含む、イネ科植物の細菌性病害防除剤、イネ科植物の種子を前記細菌病防除剤に付着させる防除処理工程を有する、イネ科植物の細菌性病害防除方法、さらにハーバスピリラム・エスピー(Herbaspirillum sp.)022S4-11株(受託番号FERM P-22001)又はその破砕物或いはハーバスピリラム・エスピー(Herbaspirillum sp.)022S4-11株(受託番号FERM P-22001)の培養液又はその上清液、菌体懸濁液を含むイネ科植物の細菌性病害防除に有効なイネ科植物の細菌病防除剤を、イネ科植物の種子にコートした種子により解決する。【選択図】図3
