Powdery mildew on apple tree is a dreaded disease in our latitudes. Tus kab mob no kuj kis tau sai sai hauv crabapples tom qab kis kab mob. Yog tias tsis kho, kua hmoov hmoov tuaj yeem ua rau txo qis thiab stunted blooms thiab qoob loo tsis ua haujlwm.
Kuv yuav ua li cas thiaj paub cov kab mob mildew ntawm crabapples?
Ntawm cov txiv apples thiab crabapples, powdery mildew tuaj yeem pom tau los ntawm cov xim dawb, hmoov txheej ntawm sab saud ntawm nplooj. Cov tua tau feem ntau twb pom nyob rau hauv daim ntawv ntawm kis bud nplai. Muaj cov nplooj qhuav ntawm tsob ntoo.
Dab tsi ua rau cov kab mob mildew ntawm crabapples?
Apple powdery mildew is themildew fungusPodosphaera leucotricha, uas yogkis los ntawm cua. Nws tawm tsam tag nrho Malus ntau yam, txawm tias crabapple lossis vaj txiv apple. Thaum nws qhuav thiab sov, cov fungus germinates ntawm nplooj ntawm cov ntoo. Los ntawm muaj, mycelium txuas ntxiv txhim kho cov nplooj thiab ceg. Cov kab mob yog nyiam los ntawm cov lwg thaum sawv ntxov. Cov fungus tshem tawm cov dej thiab cov as-ham los ntawm nplooj. Vim li ntawd lawv qhuav qhuav thiab tuag.
Kuv tuaj yeem tiv thaiv kab mob apple li cas?
Koj tuaj yeem ua ntej tawm tsam cov kab mob mildew ntawm crabapples los ntawmtxiav rov qab cov cuam tshuam tua Txij li thaum fungus overwinters ntawm buds, koj yuav tsum pib nrog nws thaum ntxov caij nplooj ntoos hlav. Nyob rau hauv ib lub vaj organic koj tsis txhob siv fungicides. Xwb, xaiv cov tshuaj hauv tsev xws li kev sib xyaw ntawm cov mis nyuj tshiab thiab dej hauv qhov sib piv 1: 2 raws li tshuaj tsuag. Kev sib xyaw ntawm cov hmoov ci, roj rapeseed thiab dej kuj ua haujlwm zoo li tshuaj tsuag tawm tsam mildew.
Kuv yuav tiv thaiv cov kab mob mildew ntawm crabapples li cas?
Txhawm rau kom tsis txhob muaj kab mob ntawm cov ntoo, koj yuav tsum ywg dej cov ntoo me thaum huab cua qhuav. Thaum fertilizing, nco ntsoov tias cov ntsiab lus nitrogen tsis siab dhau. Nitrogen ntau dhau ua rau cov nplooj ua mos, tsim kom muaj chaw yug me nyuam rau cov kab mob fungal. Yog hais tias ib tug crabapple nyob rau hauv koj lub vaj twb kis kab mob, koj yuav tsum tau watered rau lwm yam malus ntoo nrog teb horsetail raws li kev tiv thaiv.
Tip
Resistant ntau yam
Mildew koj tuaj yeem zam kev siv ntau yam resistant. Malus 'Everest' thiab 'Roy alty' qhia tau hais tias muaj zog tiv thaiv mildew. Ntau yam 'Red Jade' tseem tiv taus mildew.
