2024 Tus sau: Chloe Blomfield | [email protected]. Kawg hloov kho: 2023-12-15 23:55
Powdery mildew yog kab tias kab mob fungal tshaj plaws thiab qhov kev txwv ntawm cov neeg ua teb muaj nyob thoob plaws ntiaj teb. Powdery mildew tuaj yeem kis tau ntau txhiab tus tswv tsev sib txawv. Hauv tsab xov xwm no, txawm li cas los xij, peb yuav tham tshwj xeeb txog powdery mildew ntawm dos. Nyeem rau kom paub yuav ua li cas tswj cov kab mob mildew hauv dos qoob loo.
About Powdery Mildew on Dos
Powdery mildew on dos yog kab mob fungal tshwm sim los ntawm cov kab mob Leveillula taurica. Txawm hais tias tus kab mob feem ntau hu ua powdery mildew tuaj yeem cuam tshuam ntau txhiab ntau hom nroj tsuag, muaj cov kab mob sib txawv uas ua rau muaj kab mob hauv cov nroj tsuag tshwj xeeb. Leveillula taurica yog cov kab mob mildew uas tshwj xeeb kis rau cov nroj tsuag hauv Allium tsev neeg.
Qhov no tuaj yeem ua lub luag haujlwm tseem ceeb hauv kev xaiv cov fungicides kom zoo rau dos powdery mildew tswj. Nws yog ib qho tseem ceeb nrog cov tshuaj fungicides kom nyeem cov ntawv sau ua ntej yuav khoom thiab siv cov khoom no. Hauv qhov no, koj yuav xav xaiv cov tshuaj tua kab mob uas hais tias nws tshwj xeeb kho Leveillula taurica lossis dos nrog powdery mildew. Kev siv cov khoom lag luam uas tsis hais tshwj xeeb qhov no yuav tsis tsuas yog siv nyiaj pov tseg xwb tab sis nws tuaj yeem ua tauua rau muaj kev phom sij txaus ntshai thiab tsis muaj kev nyab xeeb rau cov khoom noj.
Qhov tau hais tias, cov tsos mob ntawm cov kab mob powdery mildew ntawm dos yog zoo nkauj npaum li cov tsos mob ntawm cov kab mob mildew. Thawj, feem ntau tsis pom, cov tsos mob yog lub teeb ntsuab, daj, los yog chlorotic saib me ntsis los yog mottling ntawm dos foliage. Raws li tus kab mob loj tuaj, cov pob no tuaj yeem ua rau me ntsis poob thiab tig xim dawb mus rau lub teeb grey.
Cov tshuaj dawb dawb yuav tsim rau ntawm cov kab mob no thiab tuaj yeem npog tag nrho nplooj lossis nplooj. Cov hmoov dawb txheej no yog cov kab mob mycelium uas muaj spores. Cov spores feem ntau yog tso tawm rau cua lossis tuaj yeem kis los ntawm nag lossis dej saum taub hau.
Dos Powdery Mildew Control
Powdery mildew on dos is most prevalue in hot, dry conditions of summer months uas tau ua raws li txias, ntub dej caij nplooj ntoos hlav. Tus kab mob tuaj yeem overwinter nyob rau hauv lub vaj khib nyiab los yog nyob rau hauv cov av saum npoo, thiab tuaj yeem hloov mus rau cov nroj tsuag tshiab los ntawm txaws rov qab los nag lossis dej. Cov fungus ces nkag mus rau cov nroj tsuag los ntawm lawv cov microscopic stomata thiab pib loj hlob.
Raws li lub caij ntuj sov sov, cov xwm txheej ua tau zoo tshaj plaws rau kev tsim cov spores thiab qhov no yog thaum peb feem ntau pom cov tsos mob ntawm tus kab mob. Raws li nrog rau cov kab mob fungal, kev huv huv kom zoo tuaj yeem txo qhov kis ntawm cov kab mob mildew ntawm dos.
Kev ntxuav cov khib nyiab hauv vaj, cov cuab yeej siv tshuaj tua kab mob, thiab ua kom tob tob hauv vaj txaj thaum pib ntawm txhua lub caij cog qoob loo tshiab yog cov kauj ruam zoo hauv kev tswj cov dos powdery mildew. Nws tseem yog ib qho tseem ceeb kom tsis txhob muaj ntau lub vaj txaj.
Tiv thaiv cov kab mob fungicides uas muaj cov poov tshuaj bicarbonate, lossis tsuas yog qee qhov chav ua noj ci dej qab zib, tuaj yeem tiv thaiv kev sib kis ntawm Leveillula taurica. Txawm hais tias muaj ntau cov kab mob fungal tsis tuaj yeem kho nrog fungicides thaum muaj tus kab mob, dos powdery mildew tuaj yeem kho nrog qee yam fungicides. Nco ntsoov nyeem cov ntawv tshuaj fungicide xaiv ib qho uas yuav kho tus mob no.
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