Estonia, monga maiko ena ambiri, idakumana ndi vuto la kulephera kwa mbewu za mbatata chifukwa cha chilimwe chouma. Ubwino wa ma tubers nawonso ndi osasangalatsa.
Terje Tähtjärv, wofufuza wa ku Jõgeva Department of the Estonian Plant Industry Institute, anati chifukwa cha chilalacho, mbatata zakhala ndi mikhalidwe yachilendo kwa mitundu yosiyanasiyana.
Malinga ndi Terje, chaka chino pali nkhanambo zambiri, overgrowth, makanda, khalidwe la tubers wavutika kwambiri ndi zinthu zoipa kukula. Mtundu wanthawi zonse wa tubers wasinthanso chaka chino. Mwachitsanzo, mitundu ya Maret, yomwe ili ndi khungu lofiira kwambiri, idakhala yopepuka kuposa masiku onse.
Ubwino wa tubers makamaka anakhudzidwa ndi kutentha. Mvula imene inagwa pambuyo pa chilalacho inathandiza mitundu ina yapambuyo pake, koma mitundu yoyambirirayo inali ndi kusowa kwa chinyezi ndipo ma tubers anali ochepa kwambiri.