ʻO Estonia, e like me nā ʻāina ʻē aʻe, i kū i ka pilikia o ka hōʻolo ʻana o kaʻuala ma muli o ke kauwela maloʻo. ʻAʻole maikaʻi hoʻi ka maikaʻi o nā tubers.
ʻO Terje Tähtjärv, he mea noiʻi ma ke keʻena ʻo Jõgeva o ka Estonian Institute of Plant Industry, i ʻōlelo ʻia ma muli o ka maloʻo, ua hoʻomohala ʻia kaʻuala i nā ʻano ʻano ʻokoʻa no nā ʻano like ʻole.
Wahi a Terje, i kēia makahiki he nui ka scab, overgrowth, pēpē, ua ʻeha nui ka maikaʻi o nā tubers mai nā kūlana ulu maikaʻi ʻole. Ua loli ke kala maʻamau o nā tubers i kēia makahiki. ʻO kahi laʻana, ʻo ka ʻokoʻa Maret, kahi i loaʻa i ka ʻulaʻula ʻulaʻula o ka ʻili, ua ʻoi aku ka māmā ma mua o ka maʻamau.
ʻO ka maikaʻi o nā tubers i hoʻopili nui ʻia e ka wela. ʻO nā ua i ukali i ka ua maloʻo ua kōkua i nā ʻano hope, akā ua ʻeha nā ʻano mua i ka deficit o ka wai a ua liʻiliʻi ka paipū.