Spruce ntoo thiab arborvitae tshwj xeeb yog plagued los ntawm fungi thiab kab tsuag. Yog tias kuaj pom ntxov, tsob ntoo tuaj yeem cawm tau ntau zaus. Qhov chaw zoo tshaj plaws thiab kev saib xyuas tsim nyog ntawm tsob ntoo tiv thaiv kab mob los yog tsawg kawg ua kom nws nyob hauv qhov txwv. Thaum muaj mob tshwm sim, thawj yam uas koj pom yog wilting tua, uas tom qab ntawd tig xim av. Hauv cov xwm txheej no, koj yuav tsum ua sai sai. Txawm li cas los xij, nws tsis yog ib qho yooj yim kom paub seb dab tsi ua rau qhov wilting.
Caus ntawm kev puas tsuaj rau conifers
Thaum pib lub caij nplooj zeeg, ntau lub conifers poob ntau cov koob qub. Qhov no yog ib qho phenomenon kiag li thiab tsis ua rau lub tswb. Tsuas yog thaum tag nrho cov tua tig xim av - tshwj xeeb tshaj yog cov tub ntxhais hluas tua - yuav tsum tau kuaj xyuas kom zoo. Cov laj thawj ntawm qhov no tuaj yeem sib txawv heev.
Qhov chaw tsis zoo
Feem ntau, cov nplooj daj lossis xim av thiab cov koob poob rau ntawm conifers tsis yog vim muaj kab tsuag. Ntau hom ntoo coniferous tshwm sim ib txwm nyob hauv thaj chaw ntub dej. Hauv peb lub vaj, cov conifers feem ntau raug kev txom nyem los ntawm qhov tsis muaj dej txaus. Tseem muaj teeb meem qhov chaw ntxiv:
- Nyob ntev, Frost lub sij hawm qhuav (Frost drying)
- Ntawm dej
- Soil compaction
Tip:
Conifers lossis conifers xav tau cov av noo zoo sib xws. Kuj nyob rau lub caij ntuj no. Yog li ntawd, feem ntau dej me me thaum lub sij hawm tsis muaj Frost, qhuav!
Nutrient Deficiency
Cov khoom noj tsis txaus kuj tuaj yeem ua rau koob poob thiab ib tus neeg tua tuag. Txawm li cas los xij, qhov laj thawj no yog qhov tsawg heev. Ntau zaus, kev siv ntau txoj kev ntsev, Epsom ntsev thiab conifer chiv ua rau kev puas tsuaj (dhau-fertilization).
Kab mob
Ntxiv rau qhov teeb meem ntsig txog qhov chaw, ntau yam kab mob, kab mob lossis cov kab mob tuaj yeem kis tau cov koob thiab cov ntoo ntoo. Txawm hais tias muaj teeb meem fungi qee zaum rhuav tshem tag nrho thaj chaw hauv hav zoov lossis hauv thaj chaw cog qoob loo, lawv tsuas pom muaj nyob hauv vaj lossis chaw ua si. Yog tias muaj cua daj cua dub los yog lawg puas tshwm sim, cov ceg cuam tshuam yuav tsum tau txiav tam sim ntawd. Cov qhov txhab tsim qhov qhib rau cov kab mob.
- xeb fungi: Pine blister rust feem ntau cuam tshuam rau tsib-koob ntoo thuv hom. Cov fungus cuam tshuam kev thauj dej hauv cov nroj tsuag. Cov khoom uas raug cuam tshuam tig xim av thiab tuag. Nyob rau hauv lub caij nplooj zeeg, spindle-shaped o tshwm nyob rau hauv lub cev thiab ceg ceg, uas yog me ntsis reminiscent ntawm cones. Resin flow yog feem ntau pom. Qhov no kuj siv tau rau juniper xeb, uas ua rau pear kab sib chaws ntawm tsob ntoo pear.
- Pine shed: Txhua koob poob tawm tsuas yog cov tub ntxhais hluas tua. Nyob rau hauv huab cua ntub, cov fungus kuj kis mus rau kev noj qab haus huv tua. Hauv qhov xwm txheej hnyav, qhov no ua rau cov nroj tsuag tuag tag.
- Thuja scale xim av: Tus kab mob fungal cuam tshuam rau ntau hom arborvitae. Thaum pib, tus kab mob fungal manifests nws tus kheej raws li ib tug neeg yellowed nplooj nplai nyob rau hauv qab ntawm ceg. Tom qab ntawd cov tua poob. Cov nroj tsuag hluas muaj kev pheej hmoo tshwj xeeb.
- Needle xim av (teev xim av): Lwm yam kab mob fungal ua rau tua thiab ceg tuag. Tshwj xeeb tshaj yog nyob rau lub caij nplooj ntoos hlav, tus neeg tua lub tswv yim xim av thiab tuag. Kev saib ze dua qhia pom me me dub spore deposits.
- Kab thiab qia rot: Ib qho kab mob nrog cov av-loj hlob fungus Phytophthora cinnamomi tshwm sim feem ntau ntawm cov av hauv av thiab pib ua rau hauv paus rot thiab tom qab qia rot. Hauv cheeb tsam hauv qab ntawm lub cev, tuaj yeem pom cov xim liab-xim, spongy rot me ntsis.
- Pestalotia ceg tuag: Lwm yam fungi tsis muaj teeb meem fungi nyob rau hauv qhov tseeb. Cov fungus Pestalotia funerea tsis ua rau muaj kev puas tsuaj ncaj qha, tab sis yog cov kab mob uas tsis muaj zog uas tshwm sim ntawm cov ntoo ua ntej. Cov lus qhia tua ntawm cov nroj tsuag tig grey.
- Hallimasch infestation: Yog tias tag nrho tsob ntoo tuag, qhov no qhia tau tias muaj kab mob honeycomb. Cov fungus Armillaria mellea kis ntawm spores hauv av thiab nkag mus rau hauv cov hauv paus hniav ntawm cov ntoo tsis muaj zog. Nyob ntawd nws nthuav tawm hauv lub network dawb ntawm cov tawv ntoo thiab ntoo.
- Grey pwm fungus: Botrytis cinerea tuaj yeem ua rau cov mos mos, cov tub ntxhais hluas tua ntawm cov ntoo coniferous tig xim av nyob rau hauv ntub thiab txias caij nplooj ntoos hlav. Aerate av zoo.
Tsiaj kab mob
Feem ntau ntawm cov kab tsuag tsiaj ntawm conifers yog cov arthropods xws li kab thiab arachnids. Qee cov kab siv lawv cov larval theem hauv ntoo thiab ua rau nws puas tsuaj mus ntev.
- Leather Moths: Thuja nplooj miner yog ib tug grey-dawb npauj (Argyresthia thuiella) uas ntev li ntawm 4 millimeters. Nyob rau hauv Lub rau hli ntuj nws lays nws qe nruab nrab ntawm lub teev ntawm tua ntawm arborvitae. Caterpillars nteg rau sab hauv ntawm cov nroj tsuag. Cov kab mob tuaj yeem pom tau los ntawm qhov me me hauv cov tawv ntoo.
- Arachnids: Arachnids suav nrog, piv txwv li, kab laug sab kab laug sab, uas ua rau ntau cov ntoo coniferous, tshwj xeeb tshaj yog cov qab zib loaf spruce. Ib lub vev xaib dawb feem ntau tuaj yeem pom ntawm cov tua. Kev kis kab mob hnyav ua rau rab koob browning thiab tom qab pov tseg.
- Nroog galls: Qhov no yog lub npe muab rau kev hloov pauv tsis tu ncua uas tuaj yeem tshwm sim tom qab muaj kab tsuag. Cov no yog tshwm sim los ntawm kev kis kab mob gall mites, gall ice, gall midges los yog gall wasps. Lub yew bud gall mite deforms tua thiab koob kom lawv zoo li barbed hlau. Txiav tawm qhov cuam tshuam tua.
- Lice: Ntau hom ntshauv, xws li cov kab laug sab spruce (Sitka louse), pub rau hauv qab ntawm cov koob qub, ua rau lawv pib daj thiab ces xim av.
- Beetles: Tom qab ob peb xyoos ntawm kev qhuav qhuav, bark beetles yog nce zuj zus. Tuag thiab tawg ceg ntawm lub caij nplooj zeeg thiab caij nplooj ntoos hlav nrog me me thickenings ntawm lub hauv paus qhia ib tug kab mob nrog bark beetles. Kuj tseem muaj ntau qhov xyaum me me ntawm cov ntoo. Weevils thiab lawv cov larvae noj cov koob, tawv ntoo thiab cov hauv paus hniav. Sib ntaus sib tua nyuaj heev vim txoj kev zais cia.
Pest Control
Qhov yuav tsum tau ua ua ntej kom zam thiab tiv thaiv kab mob kom zoo yog txheeb xyuas qhov ua rau. Yog li ntawd, kev tshuaj xyuas cov ntoo tsis tu ncua yog qhov tseem ceeb. Yog hais tias xim av tshwm nyob rau hauv lub conifer, tag nrho cov nroj tsuag yuav tsum tau soj ntsuam rau kab mob. Kab tsuag tuaj yeem qhia tau tias:
- white webs
- twisted koob thiab twigs
- Drilling qhov
- Drilling chips rau lub cev thiab hauv av
- spongy yellow-xim av (cone-like) loj hlob ntawm cov ceg
- Lub cev tsis muaj xim
- Tshem tawm tawv
Ua ntej, cov kab mob yuav tsum tau txiav tawm mus rau cov ntoo noj qab haus huv. Feem ntau, qhov no tiv thaiv kab mob mus rau qhov zoo. Cov ntoo me me feem ntau tseem tuaj yeem kho tau yooj yim nrog tshuaj tua kab. Fungi lossis kab tho txawv tsis tuaj yeem tswj tau. Thaum muaj xwm txheej ceev, cov chaw pab tswv yim ntawm lub nroog lub luag haujlwm lossis cov kev pabcuam tiv thaiv tsob nroj tuaj yeem pab tau. Yog tias lub conifer tsis tuaj yeem cawm tau, nws yuav tsum tau muab tshem tawm ntawm lub vaj kom sai li sai tau, feem ntau nrog rau cov hauv paus hniav.
Tip:
Tsis txhob muab cov yub txiav mus rau hauv lub compost! Cov kab tsuag tseem kis mus rau qhov ntawd. Nws yog qhov zoo tshaj rau muab pov rau hauv tsev pov tseg lossis hlawv nws.
Cov conifers twg yog qhov yooj yim?
- Yew: fungal kab mob, kab mob gall mites, mealybugs, nplai kab, weevils
- Spruce: Aphids, kab laug sab mites, fungal infestation, nplooj miners, beetles
- Pine: fungal kab mob, nplai kab, mealybugs, sawflies
- tsob ntoo ntawm txoj sia (thuja): Nplooj miners
- Juniper: Rust, kab laug sab mites, mealybugs, nplooj miners
Conclusion
Tshwj xeeb yog cov nroj tsuag tsis muaj zog uas tsis nyob hauv qhov chaw zoo, nws cov av qhuav dhau los yog noo dhau, ua rau muaj kab mob thiab kab tsuag. Spruces, pines thiab arborvitae raug cuam tshuam tshwj xeeb. Ntxiv nrog rau ntau yam kab mob fungi, kuj tseem muaj cov kab nqus los yog drilling kab, kab los yog arachnids xws li ntshauv, mites lossis npauj. Kev sib ntaus yuav tsum tau ua kom sai li sai tau los ntawm kev txiav qhov cuam tshuam ntawm cov nroj tsuag, tom qab ntawd ntau zaus tsob ntoo tseem tuaj yeem cawm tau.
Nkauj tseeb & lus qhia
- Ntau hom tawv ntoo nyiam nyob rau ntawm cov nroj tsuag tshiab, tab sis kuj muaj kab ntev ntev xws li thuja beetle. Txij li cov kab tuaj yeem tsim tau ntau tiam neeg hauv ib xyoos nyob ntawm huab cua thiab qhov kub thiab txias, lawv muaj kev phom sij tshwj xeeb.
- Spruce ntoo tshwj xeeb yog feem ntau plagued los ntawm kab tsuag thiab kab mob. Cov ntoo thuv ua rau cov koob tig xim av. Lawv poob thiab, thaum ntub, kis cov koob tseem noj qab haus huv.
- puab tsaig blister xeb yog cov kab mob uas zaum ntawm cov ceg thiab ua rau dej tsis yooj yim. Tom qab ob peb xyoos, qhov no ua rau tuag ntawm qhov cuam tshuam tua. Sitka spruce plooj feem ntau tawm tsam Sitka thiab xiav spruce ntoo. Cov ntshauv nqus cov koob, uas tom qab ntawd poob. Cov mealybug, ntawm qhov tod tes, tawm tsam ntau cov conifers thiab conifers, xws li pines, spruces, Douglas firs, cedars thiab larches. Cov nroj tsuag tsis muaj zog heev, tshwj xeeb tshaj yog tias kev kis kab mob kav ntev li ob peb xyoos.
- Cov kab daj daj daj tuaj tawm tsam ntau hom spruce, tshwj xeeb tshaj yog lub hauv paus ntawm cov tub ntxhais hluas tua txhua xyoo. Cov no khoov tau yooj yim thiab qhuav tawm.
- Thujas raug kev txom nyem los ntawm thuja nplai xim av thiab thuja nplooj miner. Npauj npaim tsim cov tunnels pub rau hauv cov nplai ceg. Lawv qhuav tawm ntawm sab hauv thiab tig xim av. Lub scale browning yog qhia los ntawm ib tug neeg yellowed nplooj nplai nyob rau hauv cov ceg. Cov cuam tshuam tua poob tawm. Nws yog nceb qhov txhaum.
- Tsis tas li ntawd, tua thiab ceg tuag, tawv ntoo thiab ntoo kab mob thiab cag thiab pob tw rot tuaj yeem tshwm sim.
