Bazi reRosselkhoztsentr muKomi Republic rinonyevera nezve njodzi yekupararira kweyakaora hutachiona hwembatatisi. Ichi chirwere chine njodzi chinogona kuparadza kusvika pa45% yezvirimwa, saka zvakakosha zvikuru kutora matanho akakodzera panotanga kuoneka zviratidzo zvekutanga.
Iyo inokonzera chirwere chechirwere ibhakitiriya inokuvadza yemhando Corynebacterium sepedonicum (Clavibacter michiganensis subsp. Sepedonicum).
Chirwere ichi chinobata mashizha, madzinde, zvitonha pamwe nemachubhu. Kuomesa kwezvirimwa kunotanga kuzviratidza mukati menguva yemaruva uye kunoenderera kusvika kupera kwemwaka wekukura. Haasi ese anogona kuoma pane gwenzi rembatatisi, asi chete 1-2 madzinde. Pane chikamu chedzinde, yero kana kusviba kwemidziyo kunoonekwa.
Mumamiriro ekunze akaoma, zvirimwa zvinorwara zvinosvava nekukurumidza, ma tubers haatapukirwe nechitarisiko nekuda kwehutachiona hwehutachiona, uye mumakore ane hunyoro ane tembiricha ine mwero, chirimwa chinosvava zvishoma, nepo kukuvara kweiyo tubers kuchiwedzera.
Pane tubers, chirwere chinozviratidza muchimiro chemhete uye pitting kuora. Nemhete yekuora, necrosis yemidziyo yemhete inoonekwa, painosvinwa, yero mucous exudate inoonekwa. Nedanda rakaora, mavara ane mafuta ane hunyoro anoumbwa pasi peganda reiyo tuber, iyo inowedzera saizi panguva yekuchengetedza.
Zvirwere tubers ndizvo zvakakonzera hutachiona.
Iyo pathogen haina kubhururuka muvhu, asi inogona kuenderera pamarara emiti.
Chirwere ichi chinopararira panguva yekukohwa: mabhakitiriya anotapuriranwa zviri nyore kuburikidza nemapanga kana achicheka tubers, nekukuvara kwemuchina kubva kuzvirimwa zvekurima.
Nzira yakatwasuka yekuongorora kuora kwemaringi ndeyekuita bvunzo repolymer cheni (PCR).
Basic kudzora matanho
Iko hakuna makemikari ekurwisa mhete kuora.
Matanho eAgrotechnical:
• Zvinhu zvekudyara zvine hutano
• Kutevedzera kutenderera kwezvirimwa.
• Kurima mhando dzisingagadzirike.
• Kubviswa kwezvirimwa zvinorwara mumwaka wekukura
• Kudziisa mbeu kwemasvondo maviri kusvika matatu patembiricha yegumi nemana kusvika gumi nemasere nemasere isati yachengeterwa kana kupera kwenguva yekuchengetera zvirimwa zvinotapukira.
• Kucheka panguva yakakodzera uye kubvisa hurairi.
• Kugadzirira zvakakwana uye kuisa utachiona kubva muzvitoro zvembatatisi usati waisa tubers.