Nthambi ya Rosselkhoztsentr ku Komi Republic imachenjeza za kuopsa kwa kufalikira kwa mabakiteriya owola a mbatata. Ichi ndi matenda owopsa omwe amatha kuwononga mpaka 45% ya mbewuyo, chifukwa chake ndikofunikira kuti mutenge nthawi yake zikayamba kuwonekera.
Wothandizira matendawa ndi bakiteriya wowopsa wa mitundu ya Corynebacterium sepedonicum (Clavibacter michiganensis subsp. Sepedonicum).
Matendawa amakhudza masamba, zimayambira, stolons ndi tubers. Kufota kwa mbewu kumayamba kuwonekera nthawi yamaluwa ndikupitilira mpaka kumapeto kwa nyengo yokula. Sikuti onse amatha kufota pachitsamba cha mbatata, koma zimayambira 1-2 zokha. Pa gawo la tsinde, chikasu kapena kuda kwa ziwiya zimawoneka.
M'nyengo youma, zomera zomwe zimadwala zimafota msanga, ma tubers samakhala ndi kachilombo koyambitsa matendawa, chifukwa chakuchepa kwa kachilomboka, ndipo m'zaka zamvula ndi kutentha pang'ono, chomeracho chimafota pang'onopang'ono, pomwe kuwonongeka kwa ma tubers kumakulirakulira.
Pa tubers, matendawa amadziwika ngati mphete ndi zowola. Ndi mphete zowola, necrosis ya zotengera za mphete imawonedwa, ikafinya, pamatuluka chikaso chachikasu. Ndikowola komwe kumapangika, mawanga amafuta amapangidwa pansi pa khungu la tuber, lomwe limakulitsa kukula pakasungidwa.
Matenda a tubers ndiwo gwero lalikulu la matenda.
Tizilombo toyambitsa matenda sitimabisala m'nthaka, koma titha kupitilirabe pazinyalala.
Matendawa amafalikira nthawi yokolola: mabakiteriya amafalikira mosavuta kudzera m'mapanga podula tubers, ndikuwonongeka kwamakina azida zaulimi.
Njira yolondola kwambiri yodziwira zowola mphete ndiyo kuyesa mayeso a polima chain reaction (PCR).
Njira zoyang'anira
Palibe mankhwala omwe angathe kulimbana ndi zowola.
Njira za agrotechnical:
• Zinthu zobzalira bwino
• Kutsata kasinthasintha wa mbeu.
• Kulima mitundu yolimbana.
• Kuchotsa mbeu zodwala munthawi yachilimwe
• Kutenthetsani nyemba kwa masabata awiri kapena atatu kutentha kwa madigiri 2-3 musanasungidwe kapena kumapeto kwa nthawi yosungira kuti muzindikire ma tubers omwe ali ndi matenda.
• Kudula ndikunyamula kwakanthawi.
• Kukonzekera bwino ndi kuthira tizilombo toyambitsa matenda musanagwiritse tubers.