简介：Anewendophyticantagonisticfungus,ChaetomiumspiraleND35fromPopulustomentosa,wasreported.Thebio-controltrialsofC.spiraleND35againsttheValsaCankerofapplewerepreliminarilyinvestigated.TheresultsofdualcultureonPDAplateshowedthatC.spiraleND35wascapableofstrongantagonismagainstValsaceratosperma,andforinhibitingthemycelialgrowthofV.ceratosperma,.thecrudeextractofliquidcultureofcornsteeppowderbrothwasmoreeffectivethanthatoneofmaltextractbroth(MEB).Theresultsofbio-controlingreenhouseandfieldindicatedthatthediseaseincidenceofappletreetreatedwithC.spiraleND35waslowersignificantlythanthattreatedbyothermethods.There-isolationexperimentsuggestedthatC.spiraleND35couldcolonizeinstemsandbranchesofappletreessuccessfully,andtheND35colonizationrateofthetreatmentwithsolidwheatbranculturewashigherthanthatofcornsteeppowderbroth,butthefieldexperimentresultthecontroleffectofliquidcultureofC.spiraleND35wasbetterthanthatofsolidculture.

简介：SiberianmothDendcrolimussuperanssibiricusTschetw.isthemainimportantinsectpestnotonlyinSiberianconiferoustaiga,butitoftenformsfociofmassreproductioninlarchstandsintheRussianFarEast.ThisarticlehasdescribedoutbreaksoftheSiberianmothandotherinsectpestssince1960tillnow.