Lub dav hlau yog tsob ntoo muaj zog. Tab sis nws tseem tsis tau muaj txiaj ntsig zoo tiv thaiv kab mob. Tias yog vim li cas lawv tus tswv yuav tsum saib xyuas lawv kom zoo, vim tias txhua qhov kev puas tsuaj xa nws cov cim. Qhov ua ntej lawv raug lees paub thiab teb nrog cov kev ntsuas tsim nyog, tsob ntoo tuaj yeem zoo dua.
Cov kab mob dab tsi tshwm sim hauv cov ntoo dav hlau?
Cov kab mob feem ntau ntawm cov ntoo dav hlau yog cov nplooj browning, kab mob massaria thiab dav hlau ntoo wilt. Lawv manifest lawv tus kheej li xim av me ntsis ntawm nplooj, tuag tawv tawv thiab sunken thaj chaw ntawm bark. Yog tias muaj kab mob, qhov cuam tshuam yuav tsum tau muab tshem tawm thiab cog ntau yam resistant.
Peb kab mob ntau tshaj plaws ntawm tsob ntoo dav hlau
- Leaf Tan
- Massaria kab mob
- Plav wilt
Leaf Tan
Tus kab mob, uas yog tshwm sim los ntawm fungus Apiognomonia veneta, cuam tshuam rau maple-leaved dav hlau tsob ntoo tab sis kuj muaj lwm hom ntoo dav hlau. Nws tshwm sim tshwj xeeb tshaj yog nyob rau lub caij nplooj ntoos hlav nrog ntau nag lossis daus. Nplooj, tua thiab tawv ntoo tuaj yeem cuam tshuam. Qhov no yog qhov kev puas tsuaj ib txwm zoo li:
- thawj tiam ntawm nplooj qhia cov xim xim av
- lawv irregularly zoo li tus, jagged
- pib ntawm lub hauv paus ntawm nplooj thiab txhim kho raws cov hlab ntsha loj
- kab mob nplooj hlav tawm ntxov
- hluas nkauj tuaj yeem wilt
- cortical necrosis tshwm sim (tuag ntawm thaj chaw cuam tshuam)
Leaf browning feem ntau tsuas cuam tshuam rau thawj tiam ntawm nplooj; regrowing nplooj tseem noj qab nyob zoo. Tias yog vim li cas tus kab mob fungal no tsis yog kev hem thawj rau peb lub neej. Tab sis yog hais tias nws tshwm sim ob peb zaug ua ke, tsob ntoo poob ntau thiab ntau zoo ceg. Txij li tsis muaj cov khoom raug pom zoo rau lub vaj hauv tsev, cov ceg ntoo cuam tshuam raug tshem tawm thiab muab pov tseg.
Massaria kab mob
Kev qhuav thiab cua sov nyiam cov kab mob fungal, uas feem ntau cuam tshuam rau cov ntoo dav hlau txij li hnub nyoog nruab nrab. Cov no yog cov tsos mob tseem ceeb:
- thaj chaw nyuj tig liab liab thiab tuag
- xyoo tom ntej lawv tshwm dub los ntawm qhov tsaus nti spores
- Nplooj ntoo poob tawv ntoo
- cov nplooj ntoo nyias nyias
- cov ntoo raug rotting
- Cov ceg ntoo cuam tshuam tuaj yeem tawg tsis pub dhau ob peb lub hlis
Cov ceg ntoo loj tsis tuag tag, tab sis tsuas nyob ib sab xwb. Txij li qhov no feem ntau yog sab saum toj, uas nyuaj rau pom, muaj kev pheej hmoo ntawm kev saib xyuas tus kab mob yog tias tsis muaj kev tshawb fawb tshwj xeeb.
Tip
Koj yuav tsum pom cov ceg ntoo loj dua kom sai li sai tau, vim tias yog tias lawv tawg ua tsis taus lawm lawv tuaj yeem ua rau cov khoom puas tsuaj lossis ua rau neeg raug mob. Cov khoom yuav raug shredded thiab composted los yog hlawv.
Plane tree wilt (sycamore canker)
Cov kab mob fungal no tiv thaiv tsis tau, nws tuag taus. Koj yuav tsum tsis txhob tos kom tsob ntoo tuag, uas tshwm sim li 4-5 xyoos tom qab kis kab mob. Lub dav hlau ntoo hauv lub vaj yuav tsum tau muab pov tseg thiab muab pov tseg nrog rau cov cag ntoo lossis hlawv. Thawj cov tsos mob yog:
- Nkauj tawm tshiab
- yellowish nplooj
- txiav ceg
- sunken, thaj chaw tawv tawv tsis muaj xim
