Mitengo yowonongeka kapena yofera ku mtengo wa blue blue spruce amayamba chifukwa cha tizirombo ting'onoting'ono tating'ono kapena matenda amodzi kapena ambiri. Mavuto onsewa akhoza kuwonjezereka ndi mavuto a chilala, nthaka yosauka, kuwonongeka kwa makina, ndi nyengo monga chinyezi.
Kudziwa Tizilombo Toononga Buluu
Nthambi za udzu (branch dieback) kapena nthambi zomwe zikutsitsa singano zimakhala zizindikiro za mitengo ya blue spruce mitengo ndipo nthawi zambiri imakhala ndi tizirombo timene tizilombo toyambitsa matenda: nsabwe za m'masamba kapena Cooley spruce gall adelgid.
Tizilombo toyambitsa matendawa tiwone zofanana, kutanthauzira molondola kumafuna kuyang'anitsitsa. Njira yabwino kwambiri yodziwira ngati muli ndi infestation ya Cooley spruce gall adelgid ndi kuyang'ana mankhwala a thonje pa nthambi za mtengo. Izi ndizirombo za tizilombo.
Nsabwe za m'masamba zomwe zimagwirizana ndi Colorado blue spruce zimatchedwanso nsabwe za m'masamba. Iwo ali pafupi kutalika kwa 1/16 inchi ndipo amapezeka mambirimbiri pa singano za mtengo. Nsabwe za m'masamba okhwima okhwima ali ndi matupi a azitona (a nsabwe za m'masamba ndi zobiriwira) ndi mapiko awiri.
Kulamulira Tizilombo
Ngati muwona mtengo wa adelgid kapena nsabwe za m'masamba pa Colorado blue spruce tree, yesetsani kupopera mankhwala ndi mafuta odzola . Ndizosabala, ndipo sizidzapweteka kuona ngati mafuta a Neem angathe kuthetsa vutoli. Pofuna kuthana ndi mavutowa ndi tizilombo toyambitsa matendawa, mukhoza kuteteza-koma kumafuna nthawi yabwino. Kwa nsabwe za m'masamba, mukhoza kupopera mu January, pamene moyo wawo umayamba.
Kwa Cooley spruce gall adelgid, gwiritsani ntchito mafuta ochepa kwambiri kumapeto kwa October ndi oyambirira-November. Simungathe kupopera mitengo mofulumira chifukwa ikhoza kuyambitsa kukula kwatsopano.
Colorado Blue Spruce Matenda
Palinso matenda atatu oyambirira omwe amakhudza mtundu wa buluu ndi kutsogolera nthambi zakufa kapena masamba:
- Chtospora canker: Matenda a fungus omwe amakhudza mitengo yakale ya spruce, makamaka omwe ali ndi zaka zoposa 15. Zizindikiro zimaphatikizapo nthambi zomwe zimakhala ndi singano zofiirira zomwe zimachoka kapena zimakhalabe kunthambi komanso zotsalira zoyera zomwe zimawoneka ngati zitosi za mbalame. Zotsalirazo zimayambitsidwa kukhala zowonongeka kuchokera kumagulu a mtengo. Nthambi zotsika kwambiri ndi zakubadwa nthawi zambiri zimamwalira poyamba, zotsatiridwa ndi nthambi zapamwamba ngati vuto likuipiraipira. Nthambi zomwe zakhudzidwa ziyenera kudulidwa m'nyengo yozizira, pamene mtengo ulibe nthawi yambiri (sanitize zida zowonongeka pakati pa kudula). Chithandizo china chokha ndicho kusamalira mtengo kuti ukhale wamphamvu ndi kuchepetsa mavuto a chilala mwa kuthirira mwakhama. Palibe chithandizo cha mankhwala cha matendawa.
- Needlecast: Dzina lofala la matenda osiyanasiyana, monga Rhizosphaera , Stigminia , ndi ena, matenda opatsirana ndi matendawa amachititsa mitengo ya spruce kutsanulira singano zawo. Matendawa amatenga mphukira zatsopano kumapeto kwa nthambi, koma singano zowonongeka sizimwalira mpaka chaka chotsatira, kupanga chitsanzo chosamvetsetseka pamene mitengo ili ndi zowonjezera za singano zamoyo zomwe zili pafupi ndi singano zakufa. Osafunika akhoza kulamulidwa pang'ono ndi chithandizo cha fungicide, koma izi zimateteza kukula kwatsopano; Sichimutsitsimutsa nthambi zakufa. Mankhwala opha tizilombo angayambe kubwerezedwa kwa zaka ziwiri kapena zitatu kuti apindule kwambiri.