Summer Diseases up

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1、SummerDiseasesofAppleandPearJamesW.TravisJoL.RytterSummerDiseasesofAppleandPearBlackRotWhiteRotBitterRotBlueMoldMucorRotSootyBlotch&FlyspeckFabraeaLeafSpotPearScabStonyPitFruitRotFireBlightSummerDiseasesofAppleBlackRotandWhiteRotWhiteRot-Botryosphaeriadothi

2、deaBlackRot-BotryosphaeriaobtusaBlackRotandWhiteRotareverysimilarpathogens:TheyareinthesamegenusBothcausecankersonapplewoodBothcausefruittorotOnlyblackrotcausesaleafspotSummerDiseasesofAppleBlackRotandWhiteRotBothcausecankersonapplewoodSummerDiseasesofApple

3、BlackRotandWhiteRotBothcausefruittorotblackrotblackrotwhiterotwhiterotwhiterotSummerDiseasesofAppleBlackRotOnlyblackrotcausesaleafspotfrogeyeleafspotSummerDiseasesofAppleBlackRotandWhiteRotBiologyandDiseaseCycleBothpathogensoverwinteron:mummifiedfruit,woodc

4、ankersanddeadtissue(brushpiles,prunings)SummerDiseasesofAppleBlackRotandWhiteRotBiologyandDiseaseCycleInthespring,sporesaredisseminatedbywindandrainontopruningwoundslargepruningwoundssmallpruningwoundsCankersforminthesepruningwoundsSummerDiseasesofAppleBlac

5、kRotandWhiteRotBiologyandDiseaseCycleSporesofthepathogenareproducedinthesecankersinsmallblackstructurescalled“pycnidia”pycnidiaemergingfrompycnidiaSporetendrilsofwhiterotSummerDiseasesofAppleBlackRotandWhiteRotBiologyandDiseaseCycleSporesarealsoproducedinpy

6、cnidiaonmummifiedfruitcloseupofapplemummySummerDiseasesofAppleBlackRotandWhiteRotDiseaseCycleContinuessporesincankersinfecthealthyandmummifiedfruitleavesfruitandpruningwoundsSummerDiseasesofAppleBlackRotandWhiteRotBiologyandDiseaseCycleYoucannottellbylookin

7、gatcankeredwoodorinfectedfruitwhichfungalpathogenisresponsibleSummerDiseasesofAppleBlackRotandWhiteRotBiologyandDiseaseCycleSampleshavetobelookedatmicroscopicallytobeID’dThenitis“clearly”blackrotwhiterotorSummerDiseasesofAppleBlackRotandWhiteRotDiseaseManag

8、ementCulturalMethodsandSanitationarethebestcontrolsPruneanddisposeofdeadwoodRemovecankersandproperlydisposebyburyingorburningthemRemoveallmummifiedfruitPruneout“fireblightinfected”woodorcontrolinsectve