Ailing poplar ntoo hauv koj cheeb tsam lossis ntawm koj tus kheej koj txhawj xeeb? Cov kab mob dab tsi tuaj yeem ua tau tom qab defoliated poplar crowns lossis bark loj hlob thiab koj tuaj yeem ua dab tsi yog piav qhia hauv qab no.
Cov kab mob dab tsi tuaj yeem cuam tshuam cov ntoo poplar thiab yuav kho li cas?
Poplar ntoo tuaj yeem cuam tshuam los ntawm cov kab mob fungal xws li bark blight, poplar xeb thiab tua kab mob. Kev tiv thaiv thiab kev kho mob, yuav tsum tau zam cov kab mob uas muaj kab mob, cov kab mob tua raug tshem tawm, dej txaus thiab qhov chaw tsim nyog tau lees paub thiab cov kab mob nruab nrab ntawm cov kab mob fungal tshem tawm.
Main risk: kab mob fungal
Poplar ntoo feem ntau yuav cuam tshuam los ntawm cov kab mob fungal. Cov uas nkag mus rau hauv ntoo yog cov ntsiab lus nyob rau hauv lub sij hawm tsob ntoo mob cancer los yog tshwj xeeb poplar cancer, txawm hais tias nyob rau hauv cov nqe lus kho mob nws tsis yog ib tug tiag tiag mob cancer. Tsis tas li ntawd, qee hom poplar kuj raug rau lwm yam kab mob fungal. Cov kab mob cuam tshuam rau cov ntoo poplar hauv peb lub latitudes yog:
- Bark burn
- Pobular xeb
- Tub kab mob
Bark burn
Cov tawv ntoo hlawv yog tshwm sim los ntawm ascomycete Csyptodiaportthe populea. Nws nkag mus los ntawm cov kab nrib pleb hauv cov tawv ntoo lossis los ntawm cov nplooj thiab cov pob caws pliav ntawm cov paj ntoo thiab pib ua rau lub cev txiv hmab txiv ntoo ntawm cov fungus Discosporium populem, cov txiv hmab txiv ntoo thib ob ntawm cov kab mob fungus, tsim rau txhua xyoo, cov ceg tuag. Brownish, elliptical necrosis tom qab ntawd tshwm rau ntawm cov tawv ntoo. Lub thiaj li hu ua treetop drought kuj yog yam ntxwv, piv txwv li ib tug centrally concentrated dieback ntawm crown twigs thiab ceg. Nyob rau hauv cov laus poplars, daim ntawv tseem ceeb ntawm cov fungus tuaj yeem loj hlob ntawm cov tuag tua txij li xyoo ob ntawm tus kab mob mus rau.
Dub poplars, aspens, silver poplars thiab grey poplars tshwj xeeb yog cuam tshuam los ntawm kev pheej hmoo ntawm cov tawv ntoo hlawv. Txhawm rau tiv thaiv qhov no, koj yuav tsum xaiv hom tsiaj uas tsawg dua lossis tsis muaj kev cuam tshuam, xws li balsam poplar, rau koj cov cuab yeej. Thaum cog, qhov tseem ceeb uas yuav tsum tau them sai sai rau yog dej txaus. Yog hais tias tus kab mob tau tawg lawm, cuam tshuam twigs thiab ceg yuav tsum tau txiav tawm.
Pobular xeb
Nrog cov kab mob fungal no, ntau cov txiv kab ntxwv-daj me me tshwm rau saum thiab hauv qab ntawm cov paj ntoo. Cov kab mob fungal Melampsora populina multiplies loj los ntawm cov no. Nws overwinters ntawm tus tswv tsev nruab nrab, piv txwv li ntawm larches, arums, larkspurs, marshmallows lossis celandine nyob rau thaj tsam ib puag ncig.
Yuav kom xaus rau cov kab mob rustic, tus tswv tsev nruab nrab no yuav tsum raug txheeb xyuas thiab tshem tawm.
Tub kab mob
Cov tsos mob ntawm tus kab mob tua kab mob yog pib brownish me ntsis ntawm cov tub ntxhais hluas paj ntoos nplooj, uas tom qab ntawd ntsws. Thaum cov fungus nkag mus rau hauv ntoo, cov tua tig tsaus thiab khoov downwards nyob rau hauv ib tug nuv. Txij li thaum cov kab mob overwinters nyob rau hauv cov nroj tsuag cuam tshuam, cov no yuav tsum tau txiav tawm ntxov thiab cov nplooj poob pov tseg.
