简介：AnewtechniqueformassrearingClosteraanachoreta(C.)wasdevelopedthroughalargenumberofexperiments,sotheproblemofmassproduceofCaGVwassolved.TheprocessofCaGVwasdiscussedindetail.

简介：Weinvestigatedtheeffectofseedmassonemergence,seedlingsurvivalandgrowthofPterocarpusmarsupiumRoxb.,amediumtolarge,commerciallyvaluableanddeciduoustreespecies.Amongthethreesizeclassesviz.small(10-12mm),medium(13-15mm)andlarge(16-17mm),themaximumproportionofseedbynumber(54.12%)anddryweight(51.87%)wasrecordedinthemediumsizeseedclass.Seedlengthandseedwidthweregreatestinthelargeseedclass(16.50mm,7.33mm)followedbymedium(13.50mm,5.60mm)andsmall(11.37mm,3.66mm).Similarly,hundredseedweight(100sw)variedfromamaximumof12.92ginthelargeseedclasstointermediate10.95ginthemediumseedclassandminimumof7.02ginthesmallseedclass.Thelargeseedsizeshowedmaximumemergenceandshootlengthoverthemediumandsmallseedclass.Aftersixmonthsofgrowth,significantvariationsduetoseedsizewerealsoobservedforthegrowthanddryweightofP.marsupiumseedlings.Seedlingvigour,expressedintermsofheight,collardiameter,numberofleavesanddrybiomass,wassignificantlyaffectedbyseedclass.Seedlingsthatemergedfromlargeseedsshowedbettergrowthandproducedheavierseedlingsascomparedtomediumandsmallseeds.

简介：SiberianmothDendcrolimussuperanssibiricusTschetw.isthemainimportantinsectpestnotonlyinSiberianconiferoustaiga,butitoftenformsfociofmassreproductioninlarchstandsintheRussianFarEast.ThisarticlehasdescribedoutbreaksoftheSiberianmothandotherinsectpestssince1960tillnow.