Virusi, mabhakitiriya uye fungi zvinogona kukonzera zvirwere zvakasiyana-siyana mumiti. Zvirwere zvinowanzozivikanwa ndevaya vane majekiseni avo ane simba rakanakisisa. Nguva imwe neimwe, zvirwere zvinowanzosiyana zvichiteerera nemamiriro ekunze. Zvimwe zvirwere zvinowanikwa mumamiriro okunze emvura, asi zvimwe zvinowanika pakaoma.
Cancer
Kanzera inokonzerwa neaktheria kana fungi. Chirwere ichi chinokanganisa matanho uye mapazi emuti wacho. Nemhaka yekenza kufa cambium, iyo iri pasi pemuti wemasango nemiti. Kazhinji kenza inowanikwa munzvimbo dzakanyanyisa, chirwere chacho chichakura kusvikira pfuti yakanyatsoputika, uye nzvimbo yakasarudzwa nechepachiona haina kuoma. Kazhinji, varimi veminda vanoita zviratidzo izvi zvinotorwa nokuda kwezviratidzo zvezvirwere zvakasiyana-siyana (kupisa, somuenzaniso), kunyange zvazvo zvichiita ichi chirwere chakakunda chikamu chezasi chemuti.
Puffin
Ichi chirwere chinokonzera basal kana midzi yakaora uye ine zvinoreva zvakanyanya kuti zvinyatsotaurwa. Maapulo (mushwa wejeri Amillaria) ndiyo chirwere chinotyisa zvikuru chemajeni, sezvo zvakaoma kurwisana nacho, uye zvinenge zvisingaiti nzira yekupedzisa kupedza.
Downy mildew
Chirwere chacho chinowirirana nechitarisiko chekumusoro kwemashizha emavara akajeka kana machena, uye pasi pebhizha kune bluish kana bhenje rakapfeka munzvimbo idzi. Utachiona hwakakosha kukura, kubata pane dzimwe nguva mashizha ose, anotungamirira kurufu rwayo. Nemhaka yehosha iyi, mbeu yose inogona kufa.
Leaf spotting
Ichi chirwere chinokonzerwa nemamwe mabhakitiriya uye mazhinji fungi. Chirwere chacho chinopoteredzwa nemativi ose epepuru kana grey, kazhinji neinegege edges. Girasi rinoputika rhododendron rinokurudzira kukura kwemavara ane ruvara rwepepuru kana ruvara rwepepuru, asi rutivi rwekutanga runowanzova ruvara rwepepuru. Kuwedzera, maruva anobatana pamwe chete, nokudaro achiumba nzvimbo huru yezvinyama zvakafa. Mukuvapo kwekukuvara kwakakomba, mashizha anofa uye anopera, anokonzera kukura kwemuti.
Molds
Grey mold kana botrytis fungus inonzi ndiyo yakawanda kupfuura fungus. Ichi chirwere chinokanganisa michina yakawanda yezvishongo zvinokura muvharo uye yakavhurika pasi. Grey kuora inobata maitiro, maruva, mashizha nemichero, zvichikonzera kuparara kwemasukisi, kuumba mashizha matsvuku.
Ipo powdery mildew
Chirwere chinonyanya kuzivikanwa chemajimini. Chirwere ichi chinoratidzika nechitarisiko chiri kumusoro kwechepa re powdery chainzwa chachinzwa chichena, pane zvisizvo. Iyi powdery mildew ine zita rakasiyana-spherote.
Rust
Iboka guru rezvirwere zvefungal. Rust inouraya inowanikwa uye mashizha, kubva pane mavara emashizha emucheka wakaoma kana wechhizha. Iko pasi pemashizha inoshungurudzwa nekuumbwa nenzira yehuturu hwemashuzha, mavara machena, machena uye machena. Mucherechedzo wemablisters unobva pane rudzi rwechirwere. Vesicles inoputika uye inotapura iyo spores inobata mamwe mimwe miti.
Root rot
Iyi iboka rakakura kwazvo rezvirwere, iro rinoparadza masero emichero yezvirimwa uye rinoita kuti rive hutema hutsika. Inokanganisa nheyo nemidzi yemiti, naizvozvo yakakamurwa kuva basal uye root rot. Kune zviitiko apo zvakaoma kuziva chirevo chemuti.
Withering
Chirwere chakapararira uye chinozivikanwa, chinokonzerwa nefungi, mabhakitiriya, mavairasi. Pamiti, zvose zvinoshanda zvakafanana, kutanga zvinokonzera kusvibiswa kwemashizha, mashizha, kuputika, pakupedzisira inouraya mbeu yose. Mune zvimwe zviitiko, kuoma kunowanikwa panguva, kune zviitiko izvo muti wacho unodzoka zvachose. Rufu rwemuti ndicho chigarire chekupedzisira chechirwere chechirwere.
Virusi
Utachiona ndiyo pfungwa yezvirwere zvakasiyana-siyana zvinokanganisa nhamba yakawanda yemiti. Zviratidzo zvehutachiona hwehutachiona - kumisa kukura kwemiti, kusanganisa kwemafuro uye mashizha, kutarisa, maratidziro emaruva pamaruva uye mashizha, necrosis yemasukisi.