2024 Tus sau: Chloe Blomfield | [email protected]. Kawg hloov kho: 2023-12-15 23:55
Kab mob Canker dub tuaj yeem ua rau cov ntoo tsis zoo, tshwj xeeb tshaj yog willows. Tshawb nrhiav seb yuav ua li cas kom koj tsob ntoo noj qab nyob zoo, thiab yuav ua li cas txog kev kho tus kab mob canker dub hauv kab lus no.
Dab tsi yog Canker?
Dub canker yog tshwm sim los ntawm cov fungus Glomerella miyabeana. Nyob rau hauv cov ntoo willow, nws feem ntau nrog scab. Cov nplooj uas tsim cov pob txha tsis sib xws yog thawj qhov cim qhia tias tsob ntoo yuav raug kev txom nyem los ntawm cov kab mob dub. Cov pob zeb tshwm nyob rau lub caij nplooj ntoos hlav lig lossis lub caij ntuj sov thaum ntxov, thiab tsob ntoo zoo li lwm yam. Cov tswv ntoo tsis tshua pom qhov teeb meem ntawm lub sijhawm no, txawm tias cov nplooj muaj kab mob yuav shrivel.
Cankers daim ntawv nyob rau ntawm qhov chaw uas nplooj qia txuas mus rau lub twig thaum lub caij ntuj sov lig, thiab thaum tus kab mob loj tuaj, koj yuav pom cov kab mob uas cov twigs txuas rau stems thiab ceg. Cankers tuaj yeem tsim nyob rau ntawm lub ntsiab qia lossis lub cev. Nyob rau hauv lub caij nplooj zeeg, qhov txhab ooze ib tug nplaum, pinkish, velvety-saib tshuaj uas muaj spores. Cov spores raug thauj mus rau ntau qhov chaw ntawm tsob ntoo thiab mus rau cov ntoo ib puag ncig los ntawm kab.
Qhov luaj li cas ntawm cov canker nyob ntawm qhov kev tiv thaiv ntawm tsob ntoo. Thawj xyoo, lawv tsuas yog ib nti (2.5 cm.) nyob rau hauv txoj kab uas hla ntawm cov ntoo resistant, los yog ntau tshaj peb nti.(7.5 cm.) rau cov ntoo tshwj xeeb. Txhua xyoo thaj chaw ntawm cov tawv ntoo uas tuag nyob ib ncig ntawm cov cankers loj dua, tab sis tus kab mob tsis tua tsob ntoo tshwj tsis yog tias muaj ntau tus kab mob sib kis los txhawm rau txhawm rau tag nrho lub cev.
Tshuaj Kho Mob Kab Mob Kab Mob Dub Canker
Kev kho mob qog noj ntshav muaj xws li pruning thiab txau nrog fungicides. Koj tsis tuaj yeem kho cov kab mob uas twb muaj lawm nrog cov kab mob fungicide, tab sis koj tuaj yeem tiv thaiv kab mob rov qab. Kho cov ntoo nyob ze kom tiv thaiv kom tsis txhob kis kab mob. Kev txau yuav tsum tau ua tib zoo sijhawm. Tham nrog koj tus neeg sawv cev Cooperative Extension hauv zos rau cov lus qhia txog lub sijhawm zoo tshaj plaws los tua cov kab mob dub rau ntawm cov ntoo hauv koj cheeb tsam.
Kev tshem tawm cov kab mob thiab cov ceg ntoo yog qhov tseem ceeb ntawm kev kho tus kab mob canker dub. Koj lub hom phiaj yog tshem tawm tag nrho cov kab mob nplooj thiab twigs. Saib rau cov xim tsaus nti nrog cov nplooj shriveled. Thaum tus kab mob tag nrho ib ncig ntawm ib tug twig, nws yuav muaj ib tug yam ntxwv droop los yog nuv rau ntawm lub ntsis.
Tseem tsis muaj tshuaj kho cov ntoo twb puas los ntawm cov kab mob ntoo dub. Tsuas yog ua koj qhov zoo tshaj plaws kom tsis txhob kis tus kab mob mus rau lwm qhov ntawm tsob ntoo thiab mus rau lwm cov ntoo hauv toj roob hauv pes. Ua tib zoo saib xyuas pruning thiab tshuaj tsuag qee zaus, koj tsob ntoo tuaj yeem ua neej nyob ntev txawm tias muaj kab mob.
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