Kabichi muriwo unozivikanwa wakazadzwa nekudya kunovaka muviri uye unogona kunakidzwa mundiro dzakawanda dzinonaka. Zvakadaro, chimwe chezvinonyanya kutyisidzira kugadzirwa kwekabichi pasi rose chirwere chefungal chinokonzerwa neLeptosphaeria maculans, inowanzozivikanwa seblack ring spot. Ichi chinyorwa chichaongorora kukura nemigumisiro yechirwere ichi, pamwe nekupa ruzivo rwekuti chingaitwa sei zvakanaka.
Black ring spot inokonzerwa nefungus Leptosphaeria maculans, iyo inokanganisa chirimwa chekabichi kuburikidza nemashizha, petioles, uye madzinde. Iyo fungus inokonzera denderedzwa kana elliptical mavara ane yakasarudzika dema mhete yakaapoteredza, iyo inogona kukura kusvika 1 cm muhupamhi. Aya mavara anogona kusanganisa uye kugadzira nzvimbo dzakakura necrotic, zvichitungamira kudonha kwemashizha uye kuderedza kukura kwechirimwa. Muzviitiko zvakanyanya, black ring spot inogona kukonzera kurasikirwa kukuru kwegoho uye inototungamira mukutadza kwegoho.
Fungi inorarama mumarara ezvirimwa nevhu, zvichiita kuti kutenderedza mbesa kuve nzira inoshanda yekudzora chirwere ichi. Kudyara mhando dzemakabheji dzisingachinji kunogonawo kuderedza njodzi yeutachiona. Fungicides inogona kushandiswa kudzivirira zvirimwa kubva kuhutachiona, asi inoda kuiswa kudzivirira uye ingangoda kushandiswa kwakawanda mumwaka wekukura.
Kuvandudzwa kweblack ring spot kunogona kuva nemigumisiro yakakomba pakugadzirwa kwekabichi. Chirwere ichi chinogona kuderedza goho, kunaka, uye kutengeseka kwekabichi, zvichikonzera kurasikirwa kukuru kwehupfumi kuvarimi. Pamusoro pezvo, kushandiswa kwefungicides kunogona kuve nekukanganisa kwezvakatipoteredza uye kuwedzera mutengo wekugadzira.
Kuti kuderedze kukonzeresa kweblack ring spot pakugadzira makabheji, varimi vanokwanisa kushandisa nzira dzakabatanidzwa dzekugadzirisa zvipembenene zvinosanganisa tsika, biological, uye nzira dzekudzora makemikari. Aya marongero anovavarira kuderedza kushandiswa kwefungicides uye kusimudzira maitiro ekurima anoenderera mberi.
Вlack ring spot inokonzereswa neLeptosphaeria maculans injodzi huru mukugadzirwa kwekabichi pasi rose. Kurapa nekubudirira kwechirwere ichi kunoda kusanganiswa kwedziviriro, kukurumidza kuonekwa, uye nzira dzekudzivirira. Nekushandisa nzira dzakabatanidzwa dzekudzivirira zvipembenene, varimi vanokwanisa kuderedza kukanganiswa neblack ring spot pazvirimwa zvavo, kuvandudza goho nemhando yepamusoro, uye kukurudzira tsika dzekurima.